610-497-2600

SERIES 900 SAFETY RELIEF VALVES

Features

• Heavy duty cast valve bodies.
• Seats lapped to optical flatness.
• Available with resilient soft seats for superior leak-free performance.
• Standard SS spring for temperatures to 550°F (288°C). Optional alloy spring to 800°F (427°C).
• Threaded cap standard (back pressure tight). Maximum back pressure 50 psig [3.4 barg]1.
• Hex on valve nozzle provides for easy installation.
• Warn ring offers easy adjustability.
• Pivoting disc design offers exceptional seat alignment.
• Guide to nozzle ratio reduces friction.
• Full nozzle design for optimum flow performance.
• Threaded side outlet for piped off discharge to eliminate fugitive emissions.
• Each valve tested and inspected for pressure setting and leakage.

GENERAL APPLICATION

Suitable for air/gas compressors, liquid filled pressure vessels/systems, high temperature/ pressure hot water boilers, for pressure vessels containing air, gas or steam and process and industrial applications requiring steel/stainless steel construction. Also for vacuum service.

TECHNICAL DATA

Connections:Threaded NPT, BSPT or flanged
Temperature range:-320° to 800°F (-195° to 427°C)
Pressure range:3 to 1400 psig (0.2 to 96.5 barg)
Vacuum range:6" to 29" HG (200 to 1000 mbarg)
CodeASMe VIII

NOTE

1. Back pressure increases set pressure on a one to one basis and reduces capacity. Back pressure in excess of 10% of set pressure is not recommended.

MODELS 910, 911, 916, 917, 920, 921, 927 OVERVIEW

Model 910: Carbon steel (CS) body and bonnet with stainless steel (SS) trim.
Model 911: All SS construction.
Model 916: As model 910 except resilient seat/seals. Superior ‘leak-free’ performance.
Model 917: As model 911 except resilient seat/seals. Superior ‘leak-free’ performance.
Model 920: Steel body and bonnet with screwed cap and stainless steel spring for organic fluid vaporizers (ASME Section I – ‘V’ special use or application).
Model 921: Steel body and bonnet with plain lift lever and stainless steel spring for forced flow steam generators (ASME Section I – ‘V’ special use or application).
Model 927: Steel body and bonnet with packed lift lever and SS spring for high temperature/
pressure hot water boilers (ASME Section I – ‘V’ special use or application).

PRESSURE AND TEMPERATURE LIMITS

Pressure limits

Models 910, 911, 916, 917, 920, 921, 927: See specification table

Temperature limits

Model 9102: -20°/800°F [-28.9°/427°C]
Model 9113: -320°/800°F [-195°/427°C]
Models 916 and 917: Temperatures limited by elastomer seat material. See ‘Service
Recommendations for Resilient Seat/Seal Materials’ (page3).

OPTIONS

• Threaded cap4,5.
• Threaded cap with gag4,5.
• Plain lever.
• Plain lever with gag.
• Plain lever with vibration dampener.
• Packed lever4,5.
• Packed lever with gag4,5.
• Available with 150#, 300# and 600# inlet flanges and 150# and 300# outlet flanges per ANSI B16.5.
• Available with Tri-clover adapter inlet:

TRI-CLOVER CONFIGURATIONS

ModelInletOrificeOutlet
9*ZDE1”D1”
9*ZEE1”E1¼”
9*ZFG1½”F1½”
9*ZGG1½”G2”
9*ZGH2”G2”
9*ZHH2”H2½”
9*ZJJ2½”J3”

NOTE

1. ASME standard valves for air, steam and hot water above 140°F (60°C) must have lift lever.
2. For vacuum service: Temperature range is -20°/250°F (-28.9°/121°C).
3. For vacuum service: Temperature range is -30°/250°F (-34°/121°C).
4. Maximum back pressure 50 psig (3.4 barg).
5. Back pressure increases set pressure on a one to one basis, and reduces capacity. Back pressure in excess of 10% of set pressure is not recommended.

Specifications – Models 910, 911, 916, 917, 920, 921 and 927

SERVICE RECOMMENDATIONS FOR RESILIENT SEAT/SEAL MATERIALS

Seat/seal materialsService recommendation
Buna-N (NBR) (-30° to 250°F) (-34° to 121°C)Air, anhydrous ammonia, butane, carbon dioxide, diesel oil, ethyl chloride, ethyl ether, freons #11 and 12, fuel oil, gasoline, helium, hydrogen sulphide, kerosene, lube oil, natural gas, nitrogen, oxygen (gas), propane, propylene, sulphur dioxide, vinyl chloride
Viton A (FKM)
O-Ring seat: (-10° to 406°F) (-23° to 208°C)
Molded seat: (-10° to 290°F) (-23° to 143°C)
Acetone, air, amyl alcohol, aniline, benzine, butane, carbon disulphide, carbon tetrachloride Dowtherm A and J, ethyl chloride, ethylene, ethylene glycol, ethylalcohol, gasoline, hexane, hydrogen sulphide, isobutyl alcohol, JP - 4 fuel, JP - 5 fuel, kerosene, lube oil, natural gas, naphtha, nitrogen, propane, propylene, propyl alcohol, sulphur dioxide, toluene,trichloroethylene, turpentine, water, xylene
Silicone (-100° to 406°F) (-73° to 208°C)Air, helium, nitrogen, oxygen (gas)
Ethylene propylene (-70° to 400°F) (-57° to 205°C)Steam, hot water
Neoprene (-45° to 300°F) (-43° to 149°C)Air, anhydrous ammonia, butane, butyl alcohol, castor oil, denatured alcohol, ethanol, ethyl alcohol, freons (12, 13, 14 and 22), glycols, natural gas and silicate esters
Kalrez® 3018 (-15° to 608°F) (-26° to 320°C)Aliphatic and aromatic hydrocarbons, chlorinated hydrocarbons, polar solvents (ketones, esters, ethers), inorganic and organic acids, water and steam (steam service up to 380°F (193°C) / 200 psig saturated)
Aflas® (15° to 450°F) (-9°C to 232°C)Bases, phosphate esters, amines, engine oils, pulp and paper liquors, hot water and steam (steam service up to 360°F (182°C) / 150 psig saturated)
HNBR (-55° to 275°F) (-48° to 135°C)Aliphatic hydrocarbons, vegetable and animal fats and oils, HFA and HFB and HFC hydraulic fluids, dilute acids and bases and salt solutions at moderate temperatures, ozone aging and weathering, water and steam (steam service up to 300°F (148°C) / 50 psig saturated)

SPECIFICATIONS

Connections
ANSI standardMin./max.Min./max.Dimensions, in (mm)Approx.
Modelset pressure7,9temp.2ABCCCweight lb
number1OrificeInletOutletpsig (barg)°F (°C)Threaded capPlain leverPacked lever(kg)
9*BDC#D½” (12.7)1”(25.4)3/14004 (0.2/96.5)-320/800 (-195/427)2⅜ (60.3)1⅝ (41.3)7¼ (184.2)8⅜ (212.7)9 (228.6)3 (1.4)
9*BDD#D¾” (19.0)1”(25.4)3/14004(0.2/96.5)-320/800 (-195/427)2⅜ (60.3)1⅝ (41.3)7¼ (184.2)8⅜ (212.7)9 (228.6)3 (1.4)
9*BDE#D1” (25.4)1”(25.4)3/14004(0.2/96.5)-320/800 (-195/427)2⅜ (60.3)1⅝ (41.3)7½ (191.0)8⅝ (219.0)9⅛ (232.0)3 (1.4)
9*BED#E¾” (19.0)1¼” (31.8)3/10005(0.2/68.9)-320/800 (-195/427)2⅝ (66.7)2 (50.8)7⅝ (193.7)8¾ (222.3)9⅜ (238.1)4 (1.8)
9*BEF#10E1¼” (31.8)1¼” (31.8)3/10005(0.2/68.9)-320/800 (-195/427)3 (76)2 (51)8 (203)9 ⅛ (232)9¾ (248)4 (1.8)
9*BFE#F1” (25.4)1½” (38.1)3/7006(0.2/48.3)-320/800 (-195/427)2⅞ (73.0)2⅜ (60.3)8¾ (222.3)9⅞ (250.8)10½ (266.7)6 (2.7)
9*BFG#10F1½” (38.1)1½” (38.1)3/7006(0.2/48.3)-320/800 (-195/427)3 (76)2⅜ (60)8 ⅞ (225)10 (254)10⅝ (270)6 (2.7)
9*BGF#G1¼” (31.8)2” (50.8)3/600 (0.2/41.4)-320/800 (-195/427)3¼ (82.6)2⅝ (66.7)10⅛ (257.2)11¼ (285.8)11¾ (298.5)8 (3.6)
9*BGH#10G2” (50.8)2” (50.8)3/600 (0.2/41.4)-320/800 (-195/427)3 ¼ (832 ⅝ (67)10⅛ (257)11¼ (286)11¾ (298.5)8 (3.6)
9*BHG#H1½” (38.1)2½” (63.5)3/500 (0.2/34.5)-320/800 (-195/427)3½ (88.9)2¾ (69.9)11⅛ (282.6)13 (330.2)12½ (317.5)11 (5.0)
9*BJH#J32” (50.8)3” (76.2)3/5008(0.2/34.5)-320/800 (-195/427)4 (101.6)3¼ (82.6)12½ (317.5)14½ (368.3)15⅛ (384.2)15 (6.8)

Dimensions are for reference only.

NOTES

1. Replace asterisk with desired model number. Replace # with seat material designation. Data applicable to all models.
2. Temperature limits for Model 910 = -20°/800°F (-28.9°/427°C); for Model 911 = -320°/800°F (-195°/427°C). Temperature limits for elastomer seats per above table.
3. For C dimensions: pressures above 200 psig (14 barg) add 1.25” (31.8 mm) to the overall height.
4. 1030 psig (71 barg) for steam service with standard stainless steel spring.
5. 900 psig (62 barg) for liquid service, or with high-temperature alloy steel spring.
6. 600 psig (41.4 barg) for liquid service, or with high-temperature alloy steel spring.
7. Subject to pressure and temperature limits of flanged or tri-clover connections.
8. 367 psig (25.3 barg) for plain lever with gag.
9. Maximum back pressure 50 psig (3.4 barg).
10. Not available with flanges.

PARTS AND MATERIALS – MODELS 910 AND 911 THREADED CAP

No.Part Name910, 916, 920, 921, 927911, 917
1NozzleSS, SA351-CF8M2SS, SA351-CF8M2
2Body O-ring1PTFEPTFE
3BodySteel, SA216 Gr. WCBSS, SA351-CF8M
4Warn ringSS, A743-CF8MSS, A743-CF8M
5DiscSS, A479-316SS, A479-316
6Set screw nutSS 18-8SS 18-8
7Set screwSS, A479-316SS, A479-316
8Set screw sealPTFEPTFE
9Retainer ringSS, A303-316SS, A313-316
10Disc holderSS, A351-CF8M7SS, A351-CF8M
11GuideSS, A743-CF8MSS, A743-CF8M
12ScrewSS, Commercial Gr. 18-8SS, Commercial Gr. 18-8
13Coiled spring pinSS, A313-302SS, A313-302
14SpringSS: A313-316 or A313-T631
Alloy steel: A681-H12 or B637-X750
SS: A313-316 or A313-T631
Alloy steel: A681-H12 or B637-X750
15BonnetSteel, A108 Gr. 1117SS, SA479-316
16Spring stepSS, A479-316SS, A479-316
17StemSS, A479-316SS, A479-316
18Wire and sealSS wire and lead seal, CommercialSS wire and lead seal, Commercial
19CapSteel, A108 Gr. C1018SS, A479-316
20Compression screwSS, A479-316SS, A479-316
21Jam nutSS 18-8 or SS A479-316SS 18-8 or SS A479-316
22Cap O-ring1,6
23Body plugSteel, A108 Gr. C1018SS, Commercial Gr. 18-8
24Bonnet O-ring1PTFEPTFE
25Bonnet cap3
Cap O-ring3
Bonnet3
Steel, A108 Gr. 1117
NBR
Steel, A108-1018
SS, A479-316
NBR
SS, A312-316
26Gag screwSteel A108-1018/Zinc platedSteel A108-1018/Zinc plated
27Gag screw plugSS 18-8SS 18-8
28Gag screw gasketPTFEPTFE
No.Part NameFlanged optionFlanged option
1Inlet flangeCS, A105SS, A182-F316
2Inlet stub endSS, A479-316SS, A479-316
3Outlet flangeCS, A105SS, A182-F316
4Outlet stub endSS, A479-316SS, A479-316

NOTES

1. For threaded cap and packed lever only.
2. ‘D’ and ‘E’ orifice nozzle material is SS, SA479-316.
3. 3-piece design (not shown) for ‘H’ and ‘J’ orifices only.
4. Gag screw ships with valve, not installed.
5. For threaded cap and packed lever gag options only.
6. Valve with metal seat – cap O-ring material: Buna-N (NBR) unless valve service specified is steam (designators ‘B’, ‘L’, or ‘P’) then O-ring material EPDM. Valve with soft seat – cap O-ring material: same as seat material.
7. For models 920, 921, and 927 disc holder is ‘hard chrome plated’.

METAL SEAT

Threaded cap option (shown with gag option)

FLANGED OPTION

PARTS AND MATERIALS – TRI-CLOVER INLET OPTION

No.Part Name910, 911, 916, 917, 920, 921 and 927
1NozzleSS A479-316

TRI-CLOVER (INLET ONLY)

PARTS AND MATERIALS – MODELS 916 AND 917 SOFT SEAT, D AND E ORIFICE

No.Part Name916917
34SpindleSS A479-316SS A479-316
35Disc holderSS A479-316SS A479-316
36RetainerSS A479-316SS A479-316
37O-ring seat1
38Seat retainer screwSS 18-8SS 18-8
NOTE
1. Material
B una-N (NBR)
Ethylene propylene (EPR/EPDM)
Neoprene
Silicone
Viton A (FKM)
Kalrez®3018
Aflas®
HNBR
Letter designation
B
E
N
S
V
K
A
H

SOFT SEAT D AND E ORIFICE

PARTS AND MATERIALS – MODELS 916 AND 917 SOFT SEAT, F TO J ORIFICE

No.Part name916917
8DiscSS A479-316SS A479-316
9Ring, retainerSS A313-316SS A313-316
10Disc holderSS A351-CF8MSS A351-CF8M
33Molded seat2
NOTE
1. Material
B una-N (NBR)
Ethylene propylene (EPR/EPDM)
Neoprene
Silicone
Viton A (FKM)
Letter designation
B
E
N
S
V

SOFT SEAT F TO J ORIFICE

PARTS AND MATERIALS – MODELS 910, 911, 916, 917 AND 927 PACKED LEVER

No.Part NameMaterials
18Cap O-ring4
19Jam nutSS, A479-316
20Lift camSS, A743-CF8M
21Cotter pinCS, commercial
22LeverSteel, Zinc plated A108-GR. 1018
23Drive screwSS, commercial
24Retainer nutSS, A479-316
25Retainer O-ring4
26Lift cam O-ring4
27CapSS, A743-CF8M
28Lift nutSS, A479-316
29Lift washerSS, A479-316
30StemSS, A479-316
31Compression screwSS, A479-316
321Gag screwSteel A108-1018/Zinc plated
332Gag screw plugSS 18-8
342Gag screw gasketPTFE
PACKED LEVER
(shown with gag option)

PARTS AND MATERIALS – MODELS 910, 911, 916, 917 AND 921 PLAIN LEVER

No.Part NameMaterials
13Jam nutSS, A479-316
14Compression screwSS, A479-316
15LeverSteel, A109 Cadmium plated
16CapAluminum, anodized
17Lift nutSS, A479-316
18Lift washerSS, A479-316
19RivetSteel, commercial
20Cap screwSS, commercial 18-8
21Spring stepSS, A479-316
22Gag screw1Steel A108-1018/Zinc plated
23Vibration Dampening spring3Phosphor BRZ 510

NOTES

1. Gag screw ships with valve, not installed.
2. For threaded cap and packed lever gag options only.
3. For plain lever with vibration dampener option only.
4. Valve with metal seat – O-ring material: Buna-N (NBR) unless valve service specified is steam (designators ‘B’, ‘L’, or ‘P’) then O-ring material EPDM. Valve with soft seat – O-ring material: same as seat material
PLAIN LEVER
(shown with gag and vibration dampening spring options)

Order information – Models 910, 911, 916, 917, 920, 921 and 927

SELECTION GUIDE

Example:910BJHM01AKE0300
Model

910, 911, 916, 917, 920, 921, 927
Connection type

B       Male x female NPT

E       150# flange x FNPT

F       150# flange x FBSPT

G       300# flange x FNPT

H       300# flange x FBSPT

J       150# flange x 150# flange

L       300# flange x 150# flange

M       300# flange x 300# flange

N       600# flange x 150# flange

P       600# flange x 300# flange

T       600# flange x FNPT

V       600# flange x FBSPT

W       Male x female BSPT

Z       Tri-clover inlet x FNPT
Orifice

D, E, F, G, H, J
Inlet size

C       ½” (12.7 mm)

D       ¾” (19.1 mm)

E       1” (25.4 mm)

F       1¼” (31.8 mm)

G       1½” (38.1 mm)

H       2” (50.8 mm)

Seat/seal material

M       Metal-to-metal - Models 910, 911, 920, 921, 927

B       B una-N (NBR) - Models 916, 917 only

E       EPR - Models 916, 917 only

S       Silicone - Models 916, 917 only

V       Viton® A (FKM) - Models 916, 917 only

N       Neoprene - Models 916, 917 only

K       Kalrez® 3018 - Models 916, 917 only

A       Aflas® - Models 916, 917 only

H       HNBR - Models 916, 917 only

Variation (01 to 99)

Number provided only by Kunkle to cover specific feature or option

1       Threaded cap

2       Threaded cap with gag

3       Plain lever

4       Plain lever with gag

5       Plain lever with vibration dampne

6       Packed lever

7       Packed lever with gag

Design revision

              Orifice size

Models        D E F G H J

910       A A A A A A

911       A A A A A A

916       B B A A A A

917       B B A A A A

920       A A A A A A

921       A A A A A A

927       A A A A A A

Valve service

B       High-temperature hot water ASME Sect. I (Model 927 only) - packed lever only

C       Organic fluid ASME Section I (threaded cap only) (Model 920 only)

J       Liquid ASME Section VIII (threaded cap/packed lever only)

K       Air/gas ASME Section VIII (plain lever/packed lever required for air)

L       Steam ASME Section VIII (plain lever/packed lever required)

M       Non-code liquid (threaded cap/packed lever only)

N       Non-code air/gas

P       Non-code steam

Q       Vacuum (threaded cap/packed lever only)

R       Forced flow steam ASME Section I (plain lever only) (921 only)

Spring material

E       SST (to 550°F (288°C))

F       Alloy steel high temperature (to 800°F (427°C)) - required for steam service above 1029 psig

Set pressure

3 psig (0003) to 1400 psig (1400) (0.2 barg to 96.5 barg)

Vacuum 6” (200 mbarg) HG (inches of Mercury) (0006) to 29” (1000 mbarg) HG (0029)

MODELS 912, 913, 918, 919 OVERVIEW

Model 910: Carbon steel (CS) body and bonnet with stainless steel (SS) trim.
Model 911: All SS construction.
Model 912: Full nozzle design. SS warn ring and disc with brass/bronze base. Bronze/brass body and bonnet.
Model 913: Full nozzle design. Bronze/brass body and bonnet. 316 SS trim (base, disc and disc holder).
Model 918: As Model 912 except resilient seat/seal. Superior ‘leak-free’ performance. FM approved with 316 SS base for fire pump installations in ‘BDD’ and ‘BDE‘ sizes2.
Model 919: As Model 913 except resilient seat/seal. Superior ‘leak-free’ performance. Bronze body and bonnet. 316 SS trim (base, disc and disc holder).
Code: ASME VIII and PED

PRESSURE AND TEMPERATURE LIMITS

Pressure limits
Models 912, 913, 918, 919: See specification table on page 9 (except vacuum service)
Vacuum: 6″ to 29″ HG (200 to 1000 mbarg)
Temperature limits
Model 9123: -320°/406°F (-195°/208°C)
Model 9133: -320°/425°F (-195°/219°C)
Models 918 and 919: Temperatures limited by elastomer seat material. See ‘Service Recommendations for Resilient Seat/Seal Materials’ (page 9).

MODEL 912

OPTIONS

• Threaded cap4,5.
• Threaded cap with gag4,5.
• Plain lever.
• Plain lever with gag.
• Plain lever with vibration dampener.
• Packed lever4,5.
• Packed lever with gag4,5.
• Models 913 and 919 available with 150#, 300# and 600# inlet flanges and 150# and 300# outlet flanges per ANSI B16.5 (see page 4 for applicable parts and materials information).
• Models 913 and 919 available with Tri-clover adapter inlet (see page 5 for applicable parts and materials information).

NOTES

1. ASME standard valves for air, steam and hot water above 140°F (60°C) must have lift lever.
2. Requires variations listed below for adjustable relief pressure settings:
Variation 10: 60 – 125 psig (4.1 – 8.6 barg)
Variation 11: 126 – 175 psig (8.7 – 12 barg)
Variation 12: 176 – 250 psig (12.1 -17.2 barg)
3. For vacuum service: Temperature range is -30°/250°F (-34°/121°C).
4. Maximum back pressure 50 psig (3.4 barg).
5. Back pressure increases set pressure on a one to one basis, and reduces capacity. Back pressure in excess of 10% of set pressure is not recommended.
6. Same options available as Models 910, 911, 916, 917, 920, 921, and 927.

FLANGE CONFIGURATIONS6

ModelInletOrificeOutlet
9*DC½"D1"
9*DD¾"D1"
9*DE1"D1"
9*ED¾"E1 ¼"
9*FE1"F1 ½"
9*GF1 ¼"G2"
9*HG½"H2 ½"
9*JH2"J3"

TRI-CLOVER CONFIGURATIONS6

ModelInletOrificeOutlet
9*ZDE1”D1"
9*ZEE1”E1¼”
9*ZFG1½”F1½”
9*ZGG1½”G2”
9*ZGH2”G2”
9*ZHH2”H2½”
9*ZJJ2½”J3”

Specifications – Models 912, 913, 918, and 919

Models 912, 913, 918, 919 ASME Section VIII, steam/air/gas/ liquid, “UV” national board certified. Also available for vacuum service


SERVICE RECOMMENDATIONS FOR RESILIENT SEAT/SEAL MATERIALS

Seat/seal materialsService recommendation
Buna-N (NBR) (-30° to 250°F) (-34° to 121°CAir, anhydrous ammonia, butane, carbon dioxide, diesel oil, ethyl chloride, ethyl ether, freons #11 and 12, fuel oil, gasoline, helium, hydrogen sulphide, kerosene, lube oil, natural gas, nitrogen, oxygen (gas), propane, propylene, sulphur dioxide, vinyl chloride
Viton A (FKM)
O-Ring seat: (-10° to 406°F) (-23° to 208°C)
Molded seat: (-10° to 290°F) (-23° to 143°C)
Acetone, air, amyl alcohol, aniline, benzine, butane, carbon disulphide, carbon tetrachloride dowtherm A and J, ethylchloride, ethylene, ethylene glycol, ethylalcohol, gasoline, hexane, hydrogen sulphide, isobutyl alcohol, JP - 4 fuel, JP - 5 fuel, kerosene, lube oil, natural gas, naphtha, nitrogen, propane, propylene, propyl alcohol, sulphur dioxide, toluene, trichloroethylene, turpentine, water, xylene
Silicone (-100° to 406°F) (-73° to 208°C)Air, helium, nitrogen, oxygen (gas)
Ethylene propylene (-70° to 400°F) (-57° to 205°C)Steam, hot water
Neoprene (-45° to 300°F) (-43° to 149°C)Air, anhydrous ammonia, butane, butyl alcohol, castor oil, denatured alcohol, ethanol, ethyl alcohol, freons (12, 13, 14 and 22), glycols, natural gas and silicate esters
Kalrez® 3018 (-15° to 608°F) (-26° to 320°C)Aliphatic and aromatic hydrocarbons, chlorinated hydrocarbons, polar solvents (ketones, esters, ethers), inorganic and organic acids, water, and steam (steam service up to 380°F (193°C) / 200 psig saturated)
Aflas® (15° to 450°F) (-9°C to 232°C)Bases, phosphate esters, amines, engine oils, pulp and paper liquors, hot water, and steam (steam service up to 360°F(182°C) / 150 psig saturated)
HNBR (-55° to 300°F) (-48° to 150°C)Aliphatic hydrocarbons, vegetable and animal fats and oils, HFA and HFB and HFC hydraulic fluids, dilute acids and bases and salt solutions at moderate temperatures, ozone aging and weathering, water, and steam (steam service up to 300°F (148°C) / 50 psig saturated)

NOTE

1. These recommendations are a guide only. For the final selection of the proper material, your experience with available elastomers of various lading fluids should be considered.

SPECIFICATIONS

Maximum set pressure
Connections ANSI Standardpsig (barg)Dimensions, in (mm)Approx.
Model2ABCCCweight lb
numberOrificeInletOutlet912-9184,10913-9195,10Plain leverThreaded capPacked lever(kg)
9*BDCD½” (12.7)¾” (19.0)300 (20.7)1400 (96.5)2⅜ (60)1⅝ (41)8⅜ (213)7¼ (184)9 (2293 (1.4)
9*BDC*3D½” (12.7)1” (25.4)300 (20.7)1400 (96.5)2⅜ (60)1⅝ (41)8⅜ (213)7¼ (184)9 (2293 (1.4)
9*BDD3D¾” (19.0)¾” (19.0)-1400 (96.5)2⅜ (60)1⅝ (41)8⅜ (213)7¼ (184)9 (2293 (1.4)
9*BDD*33D¾” (19.0)1” (25.4)-1400 (96.5)2⅜ (60)1⅝ (41)8⅜ (213)7¼ (184)9 (2293 (1.4)
9*BDE*33D1” (25.4)1” (25.4)-1400 (96.5)2⅝ (67)1⅝ (41)8⅝ (219)7½ (191)9⅛ (232)3 (1.4)
9*BEDE¾” (19.0)1¼” (31.8)300 (20.7)1000 (68.9)72⅝ (67)2 (518¾ (222)7⅝ (194)9⅜ (238)4 (1.8)
9*BEF3E1¼” (31.8)1¼” (31.8)-1000 (68.9)73 (76)2 (519⅛ (232)8 (203)9¾ (248)4 (1.8)
9*BFEF1” (25.4)1½” (38.1)300 (20.7)700 (48.3)82⅞ (73)2⅜ (60)9⅞ (251)8¾ (222)10½ (267)6 (2.7)
9*BFG3F1½” (38.1)1½” (38.1)-700 (48.3)83 (76)2⅜ (60)10 (254)8⅞ (225)10⅝ (270)6 (2.7)
9*BGFG1¼” (31.8)2” (50.8)300 (20.7)600 (41.4)3¼ (83)2⅝ (67)11¼ (286)10⅛ (257)11¾ (298)8 (3.6)
9*BGH3G2” (50.8)2” (50.8)-600 (41.4)3¼ (83)2⅝ (67)11¼ (286)10⅛ (257)11¾ (298)8 (3.6)
9*BHGH1½” (38.1)2½” (63.5)300 (20.7)500 (34.5)3½ (89)2¾ (70)13 (330)11⅛ (283)12½ (318)11 (5.0)
9*BJHJ62” (50.8)3” (76.2)300 (20.7)500 (34.5)94 (102)3¼ (83)14½ (368)12½ (318)15⅛ (384)15 (6.8)

Dimensions are for reference only.

NOTES

1. Maximum temperature controlled by resilient seat/seal material.
2. Replace asterisk with desired model number. Data applicable to all models.
3. Available with SS trim (models 913 and 919) only.
4. Maximum pressure on steam is 250 psig.
5. Maximum pressure on steam is 300 psig.
6. For C dimensions: pressures above 200 psig (14 barg) add 1.25” (31.8 mm) to the overall height.
7. 900 psig for liquid service or high temp alloy spring.
8. 600 psig for liquid service or high temp alloy spring.
9. 367 (25.3) for plain lever with gag.
10. Maximum back pressure 50 psig (3.4 barg).

PARTS AND MATERIALS – MODELS 912, 913, 918, 919 THREADED CAP

No.Part NameMaterials
1Nozzle2Brass, B21 or B283 Alloy 485, (SS, SA351-CF8M5 Models 913, 919 only)
2O-ring body6PTFE
3BodyBronze, B584 Alloy 84400
4Warn ringSS, A743-CF8M
5DiscSS, A479-316
6Set screw nutSS 18-8
7Set screwBrass, B16
8SealPTFE
9Retainer ringSS, A313-316
10Disc holderBrass, B16, (SS A351-CF8M Models 913, 919 only)
11Guide3Brass, B16
12Bonnet O-ring6PTFE
13ScrewSS, commercial 18-8
14Coiled spring pinSS, A313-302
15SpringSS: A313-316 or A313-T631/Alloy steel: A681-H12 or B637-X750
16Bonnet4Brass, B16-H02
17Spring stepSS, SA479-316
18StemBrass, B16
19Wire and sealSS wire and lead seal, commercial
20CapBrass, B16
21Compression screwBrass, B16
22Jam nutSS 18-8 or Brass, B16
23Cap O-ring6,9
24Body plugBrass, B16 [¼” - 18 NPT]
25Gag screwSteel A108-1018/zinc plated
26Gag screw plugSS 18-8
27Gag screw gasketPTFE

PARTS AND MATERIALS – MODELS 918 AND 919 SOFT SEAT, F TO J ORIFICE

No.Part Name918919
8DiscSS A479-316SS A479-316
9Ring, retainerSS A313-316SS A313-316
10Disc holderBrass, B16SS A351-CF8M
33Molded seat1SS, A479-316

PARTS AND MATERIALS – MODELS 918 AND 919 SOFT SEAT, D AND E ORIFICE

No.Part Name918919
34SpindleBrass, B16SS A479-316
35Disc holderBrass, B16SS A479-316
36RetainerBrass, B16SS A479-316
37O-ring seat10
38Seat retainer screwSS 18-8SS 18-8
METAL SEAT
Threaded cap option (shown with gag option)

SOFT SEAT F TO J ORIFICE

SOFT SEAT D AND E ORIFICE

NOTES

1. MaterialLetter designation
Buna-N (NBR)
Ethylene propylene (EPR/EPDM)
Neoprene
Silicone
Viton®A (FKM)
-B
-E
-N
-S
-V
2. F through J orifice nozzle material is bronze, B62.
3. G through J orifice guide material is brass, B283, Alloy 37700.
4. F through J orifice bonnet material is bronze, B584, Alloy 84400.
5. ‘D’ and ‘E’ orifice, 9*BFG, and 9*BGH nozzle material is SS, SA479-316.
6. For threaded cap and packed lever only.
7. Gag screw ships with valve, not installed.
8. For threaded cap and packed lever gag options only.
9. Valve with metal seat – cap O-ring material:
B una-N (NBR) unless valve service specified is steam (designators ‘L’ or ‘P’) then O-ring material EPDM.
Valve with soft seat – cap O-ring material: same as seat material.
10. MaterialLetter designation
Buna-N (NBR)
Ethylene propylene (EPR/EPDM)
Neoprene
Silicone
Viton A (FKM)
Kalrez®3018
Aflas®
HNBR
-B
-E
-N
-S
-V
-K
-A
-H

PARTS AND MATERIALS – MODEL 912 PACKED LEVER

No.Part NameMaterials
18Cap O-ring1
19Jam nutBrass, B16
20Lift camSS, A743 CF8M
21Cotter pinSteel, Commercial
22LeverZinc plated steel, A108
23Drive screwSS, Commercial
24Retainer nutBrass, B16
25Retainer O-ring1
26Lift cam O-ring1
27CapBronze, B584 Alloy 84400
28Lift nutSS, A479 316
29Lift washerSS, A479 316
30StemBrass, B16
31Compression screwBrass, B16
32Gag screwSteel A108-1018/Zinc plated
33Gag screw plugSS 18-8
34Gag screw gasketPTFE
PACKED LEVER
(shown with gag option)

PARTS AND MATERIALS – MODEL 912 PLAIN LEVER

No.Part NameMaterials
13Jam nutBrass, B16
14Compression screwBrass, B16
15LeverSteel, A109 w/coating1
16CapAluminum, anodized
17Lift nutSS, A479-316
18Lift washerSS, A479-316
19RivetSteel, commercial
20ScrewSS, commercial Gr. 18-8
21Spring stepBrass, B16
22Gag screwSteel A108-1018/zinc plated
23Vibration Dampening springPhosphor BRZ 510

NOTES

1. Valve with metal seat – O-ring material:
Buna-N (NBR) unless valve service specified is steam (designators ‘L’ or ‘P’) then O-ring material EPDM.
Valve with soft seat – O-ring material: same as seat material
2. Gag screw ships with valve, not installed.
3. For threaded cap and packed lever gag options only.
4. For plain lever with vibration dampener option only.
PLAIN LEVER
(shown with gag and vibration dampening spring options)

SELECTION GUIDE

Example:912BJHM01-KE0300
Model

912, 913, 918, 919
Connection type

B       Male x female NPT

E       150# flange x FNPT (Models 913 and 919 only)

F       150# flange x FBSPT (Models 913 and 919 only)

G       300# flange x FNPT (Models 913 and 919 only)

H       300# flange x FBSPT (Models 913 and 919 only)

J       150# flange x 150# flange (Models 913 and 919 only)

L       300# flange x 150# flange (Models 913 and 919 only)

M       300# flange x 300# flange (Models 913 and 919 only)

N       600# flange x 150# flange (Models 913 and 919 only)

P       600# flange x 300# flange (Models 913 and 919 only)

T       600# flange x FNPT (Models 913 and 919 only)

V       600# flange x FBSPT (Models 913 and 919 only)

W       600# Male x female BSPT

Z       Tri-clover inlet x FNPT (Models 913 and 919 only)
Orifice

D, E, F, G, H, J
Inlet size

C       ½” (12.7 mm)

D       ¾” (19.1 mm)

E       1” (25.4 mm)

F       1¼” (31.8 mm)

G       1½” (38.1 mm)

H       2” (50.8 mm)

Seat/seal material

M       Metal-to-metal

B       Buna-N (NBR)

E       EPR

S       Silicone

V       Viton® A (FKM)

N       Neoprene

K       Kalrez®

A       Aflas®

H       HNBR

Variation (01 to 99)

Number provided only by Kunkle to cover specific feature or option

1       Threaded cap

2       Threaded cap with gag

3       Plain lever

4       Plain lever with gag

5       Plain lever with vibration dampne

6       Packed lever

7       Packed lever with gag

12       Plain lever with drain plug (913 BDDM with ¾” outlet only)

31       Threaded cap ‘D’ orifice 1” outlet

32       Threaded cap with gag ‘D’ orifice 1” outlet

33       Plain lever ‘D’ orifice 1” outlet

34       Plain lever with gag ‘D’ orifice 1” outlet

35       Plain lever with vibration dampener ‘D’ orifice 1” outlet

36       Packed lever ‘D’ orifice 1” outlet

37       Packed lever with gag ‘D’ orifice 1” outlet

Design revision

              Orifice size

Models  D E F G H J

912       -  -  -  -  -  -

913       -  -  -  -  -  -

918       B B  -   -  -  -

919       B B  -  -  -  -

Valve service

J       Liquid ASME Section VIII (standard cap/packed lever only)

K       Air/gas ASME Section VIII (plain lever/packed lever required for air)

L       Steam ASME Section VIII (plain lever/packed lever required)

M       Non-code liquid (standard cap/packed lever only)

N       Non-code air gas

P       Non-code steam

Q       Vacuum (threaded cap/packed lever only)

Spring material

E       SST

F       Alloy steel (high temperature)

Set pressure

3 psig (0.2 barg) (0003) to 1400 psig (96.5 barg) (1400)

Vacuum 6” HG (200 mbarg) (0006) to 29” HG (1000 mbarg) (0029)

Capacities – Models 920, 921, 927

ASME SECTION I STEAM (U.S., lb/h) – FLOW COEFFICIENT = 0.878

Orifice area, in2
Set pressureDEFGHJ
(psig)(0.1213)(0.2157)(0.3369)(0.553)(0.864)(1.415)
1517430948379312382028
25229407635104316292668
35284504788129320203308
45388602940154324103948
553936991092179328014588
654487971245204331925227
755048971401229935925883
855619971558255739956542
9561710981715281443977201
10064611481793294345987531
12578713992185358756049178
150928165025784231661010826
1751069190129704875761612473
2001211215333625519862214121
2251352240437546165962815768
25014932655414768061063417416
27516342906453974501164019063
30017753157493180941264620711
32519173408532387381365222359
35020583659571693821465824006
375219939116108100261566425654
400234041626500106701667027301
425248244136892113141767628949
450262346647285119571868230596
475276449157677126011968832244
500290551668069132452069433891
52530475417846213889--
55031885669885414533--
57533295920924615177--
60034706171963815821--
6253611642210031---
6503753667310423---
6753894692410815---
7004035717611207---
72541767427----
75043187678----
77544597929----
80046008180----
82547418431----
85048838682----
87550248934----
90051659185----
92553069436----
95054489687----
97555899938----
1000573010189----
10506012-----
11006295-----
12006860-----
13007425-----
14007990-----

NOTE

1. See specifications table for pressure and temperature limitations.

ASME SECTION I STEAM (Metric, kg/h) – Flow coefficient = 0.878

Orifice area, cm2
Set pressureDEFGHJ
(barg)(0.782)(1.392)(2.174)(3.568)(5.574)(9.129)
1.181144226370578947
2.01142023165188101326
3.015026641668310661747
4.018633051684713232167
5.0222395617101415832593
6.0259461721118318483027
7.0297527824135221133460
8.0334594927152223773894
9.03716601030169126424327
10.04087261133186029074761
12.04828581340219934365627
14.05579901546253839656494
16.063111221753287744957361
18.070512541959321650248228
20.078013862165355455539095
22.085415192372389360829962
24.0928165125784232661210828
26.01003178327854571714111695
28.01077191529914909767012562
30.01151204731975248820013429
32.01226219734045587872914296
34.01300231136105926925815163
36.01374244438166265--
38.01448257640236603--
40.01523270842296942--
42.0159728404436---
44.0167129724642---
46.0174631044848---
48.0182032365055---
50.018943368----
52.019693501----
54.020433633----
56.021173765----
58.021923897----
60.022664029----
62.023404161----
64.024154293----
66.024894426----
68.025634558----
70.02637-----
72.02712-----
76.02860-----
80.03009-----
84.03158-----
88.03306-----
92.03455-----
96.03604-----

NOTE

1. See specifications table for pressure and temperature limitations.

NON-CODE1 AND ASME SECTION VIII AIR (U.S., SCFM) – Flow coefficient = 0.878

Orifice area, in2
Set pressureDEFGHJ
(psig)(0.1213)(0.2157)(0.3369)(0.553)(0.864)(1.415)
3285077127198325
4325789146228374
53664109178255417
63970117192278456
74275125205300491
84580132217320524
94885139228338554
105089145238356583
115293151248372610
125497157258388635
1357101163267403660
1459104177291417683
1564114232380455745
2583148288474594972
351041853485717401212
451252234086698931462
5514726146776710461713
6516829952786511991963
7519033758796313522214
85211376646106115052464
95233414676111016582715
100243433825135517342840
125297528974159921163466
1503516241124184424994093
1754057191273208928814719
2004588151422233432645345
2255129101571257836465971
25056610061720282340296598
27561911011869306844117224
30067311972018331347937850
32572712922167355851768477
35078013882316380255589103
37583414832466404759419729
400888157926154292632310355
425941167427644537670510982
450995176929134781708811608
4751049186530625026747012234
5001102196036586005785312861
600131723424255---
70015322724----
80017473106----
90019573489----
100021763870----
11002391-----
12002606-----
13002820-----
14003035-----

NOTES

1. No code stamp or ‘NB’ on nameplate below 15 psig set.
2. See specifications table for pressure and temperature limitations.

NON-CODE1 AND ASME SECTION VIII AIR (Metric, Nm3/h)- Flow coefficient = 0.878

Orifice area, cm2
Set pressureDEFGHJ
(barg)(0.782)(1.392)(2.174)(3.568)(5.574)(9.129)
0.24580126206322528
0.571126196323504825
1.0981752734487001147
2.015126841968710741758
3.020235956192014382355
4.0253451704115518052956
5.0305542847139021723557
6.0356634990162525384157
7.04087251133186029054758
8.04598171276209432725359
9.05119081419132936395960
10.056210001562256440066560
12.066511831848303347397762
14.076813662134350354738963
16.0871154924203972620610165
18.0974173327064442694011366
20.01077191629924911767312567
22.0118020993278840713769
24.01283228235645851914114970
26.01386246538506320987416172
28.014892648413667901060817373
30.015922831442272591134118574
32.016953015470877291207519776
34.017983198499481981280820977
36.01901338152808668--
38.02004356455679137--
40.02107374758539607--
42.0221039306139---
44.0231341136425---
46.0241642976711---
48.0251944806997---
50.026224663----
52.027254846----
54.028285029----
56.029315212----
58.030345395----
60.031375579----
62.032405762----
64.033455945----
66.034486128----
68.035516311----
70.03654-----
72.03757-----
76.03963-----
80.04169-----
84.04375-----
88.04581-----
92.04788-----
96.04994-----

NOTES

1. No code stamp or ‘NB’ on nameplate below 1.1 barg set.
2. See specifications table for pressure and temperature limitations.

NON-CODE1 AND ASME SECTION VIII STEAM (U.S., lb/h) – Flow coefficient = 0.878

Orifice area, in2
Set pressureDEFGHJ
(psig)(0.1213)(0.2157)(0.3369)(0.553)(0.864)(1.415)
3871552423986211017
41001782784567121167
51111973085067911295
61212153365518611410
71302313605919241513
81382453836289811607
914525840366210351694
1015227142369410841776
1115928244172411311852
1216529345875211751924
1317130447477812161992
1417631348980312552056
1517931949881812782092
25234416650106816682732
35292519810133020783404
45352626978160525084108
554127331146188029384811
654738411313215533685515
755339481481243037976219
8559310551648270642276923
9565411631816298146577627
10068412161900311848727979
12583514842319380659469738
150986175327374493702011498
1751136202131565181809513257
2001287228935755869916915017
22514382557399465561024316776
25015892826441372441131818536
27517403094483279321239220295
30018913362525186191346722055
32520413630567093071454123814
35021923898608999941561525574
375234341676508106821669027333
400249444356927113701776429093
425264547037346120571883830852
450279649717765127451991332612
475294652398183134332098734371
500309755088602141202206136131
55033996044944015496--
600370165811027816871--
6504002711711116---
7004304765311954---
75046068190----
80049078726----
85052099263----
90055119799----
950581210336----
1000611410872----
11006717-----
12007321-----
13007924-----
14008527-----

NOTES

1. No code stamp or ‘NB’ on nameplate below 1.1 barg set.
2. See specifications table for pressure and temperature limitations.

NON-CODE1AND ASME SECTION VIII STEAM, (Metric, kg/h) – Flow coefficient = 0.878

Orifice area, cm2
Set pressureDEFGHJ
(barg)(0.782)(1.392)(2.174)(3.568)(5.574)(9.129)
0.23969108177277453
0.560106166272425697
1.081144225369577945
2.01162073235298271355
3.015627743270911081815
4.019534754289013912278
5.0235418653107116732741
6.0275488763125219563204
7.0314559873143322393666
8.0354629983161425214129
9.03947001093179528044592
10.04337711204197630875055
12.05139121424233736525981
14.059210531644269942176907
16.067111941865306147827832
18.075113352085342353488758
20.083014762306378559139684
22.0910161725264146647810610
24.0989175827464508704311535
26.01068190029674870760912461
28.01148204131875232817413387
30.01227218234085594873914313
32.01306232336285955930415238
34.01386246438496317987016164
36.01465260540696679--
38.01544274642897041--
40.01624288745107403--
42.0170330294730---
44.0178331704951---
46.0186233115171---
48.0194134525391---
50.020213593----
52.021003734----
54.021793875----
56.022594016----
58.023384157----
60.024174299----
62.024974440----
64.025764581----
66.026564722----
68.027354863----
70.02814-----
72.02894-----
76.03052-----
80.03211-----
84.03370-----
88.03529-----
92.03687-----
96.03846-----

ASME VIII LIQUID (U.S., GPM) – Flow coefficient = 0.710

Orifice area, in2
Set pressureDEFGHJ
(psig)(0.1213)(0.2157)(0.3369)(0.553)(0.864)(1.415)
151425396399162
2517314879123202
3520365693145237
45234164105164269
55264571116181297
65284977126197323
75305383136212347
85325688144225369
95346093153238390
100346195156244400
1253868107175273448
1504275117192299490
1754581126207323530
2004986135221346566
2255292143235367601
2505497151247387633
27557101158259405664
30060106165271423694
32562110172282441722
35064114178293457749
37567118185303473775
40069122191313489801
42571126197323504825
45073129202332519849
47575133208341533873
50077136213350547895
55081143224367--
60084150234383--
65088156----
70091161----
750944167----
80097173----
850100178----
900103183----
950106-----
1000109-----
1050111-----
1100114-----
1150116-----
1200119-----
1250121-----
1300124-----
1350126-----
1400128-----

NOTES

1. See specifications table for pressure and temperature limitations.
2. Liquid conversion factors to determine liquid capacity at other than 10% accumulation, multiply by the following:
1.022 = 15% accumulation
1.045 = 20% accumulation
1.066 = 25% accumulation

ASME SECTION VIII LIQUID, (Metric m3/h) – Flow coefficient = 0.710

Orifice area, cm2
Set pressureDEFGHJ
(barg)(0.782)(1.392)(2.174)(3.568)(5.574)(9.129)
1.0369142236
2.04712193049
3.05914233760
4.061116274269
5.071218304777
6.071320335285
7.081422365692
8.081523386098
9.0916254163104
10.0917264367110
12.01018294773120
14.01120315179130
16.01221335485139
18.01322355790147
20.01324376195155
22.01425396399162
24.015264066104170
26.015274269108177
28.016284472112183
30.016294574116190
32.017304777120196
34.017314879123202
36.018324981--
38.018335183--
40.019335286--
42.01934---
44.02035---
46.02036---
48.02137---
50.02137----
52.02138----
54.02239----
56.02240----
58.02340----
60.02341----
62.02342----
64.025-----
66.026-----
68.026-----
70.026-----
72.027-----
76.028-----
80.028-----
84.029-----
88.030-----
92.030-----
96.031-----

NOTE

1. See specifications table for pressure and temperature limitations.

NON-CODE LIQUID – 25% Accumulation (U.S., GPM) – Flow coefficient = 0.710

Orifice area, in2
Set pressureDEFGHJ
(psig)(0.1213)(0.2157)(0.3369)(0.553)(0.864)(1.415)
361118294574
471320335285
581523375895
6916254164105
71017274469113
81018294774121
91120305078128
101221325382135
111222345586142
121323355890148
131323376094154
141424386298160
1514253965101165
2518335183130213
3522386099154253
45254468112175286
55274875124193317
65295282134210344
75325688144226370
85346094154240394
95366399163254416
1003765102167261427
1254173114186291477
1504580124204319523
1754886134221345565
2005292144236369604
2255598152250391640
25058103161264412675
27561108169277432708
30063113176289451739
32566117183301470769
35068122190312488799
37571126197323505827
40073130203334521854
42575134210344537880
45078138216354553905
47580142221364568930
50082145227373583954
60090159249409--
70097172---
800103184----
900110195----
1000116-----
1100121-----
1200127-----
1300132-----
1400137-----

NOTE

1. See specifications table for pressure and temperature limitations.

NON-CODE LIQUID – 25% Accumulation, (Metric, m3/h) Flow coefficient = 0.710

Orifice area, cm2
Set pressureDEFGHJ
(barg)(0.782)(1.392)(2.174)(3.568)(5.574)(9.129)
0.213461017
0.5246101626
1.0369142337
2.04812203252
3.051015253964
4.061118294574
5.071320325083
6.081422355590
7.081523386098
8.0916254164104
9.0917264368111
10.01018284671117
12.01119305078128
14.01221335484138
16.01323355890148
18.01324376196157
20.014253965101165
22.015264168106173
24.016284371110181
26.016294574115188
28.017304776119195
30.017314879123202
32.018325082128209
34.018335184131215
36.019345387--
38.020355489--
40.020365691--
42.02136----
44.02137----
46.02138----
48.02239----
50.02240----
52.02341----
54.02341----
56.02442----
58.02443----
60.02544----
62.02544----
64.025-----
66.026-----
68.026-----
70.026-----
72.027-----
76.028-----
80.028-----
84.029-----
88.030-----
92.030-----
96.031-----

NOTE

1. See specifications table for pressure and temperature limitations.

NON-CODE VACUUM AIR – 10% Accumulation, (U.S., SCFM) Flow coefficient = 0.878

Orifice area, in2
Set inchesDEFGHJ
Mercury(0.1213)(0.2157)(0.3369)(0.553)(0.864)(1.415)
6244368111173284
7264571117182298
8274774121189310
9274976125195320
10285078128199327
11285179129202331
12295180131204334
13295180131204335
14295180131204335
15295180131204335
16295180131204335
17295180131204335
18295180131204335
19295180131204335
20295180131204335
21295180131204335
22295180131204335
23295180131204335
24295180131204335
25295180131204335
26295180131204335
27295180131204335
28295180131204335
29295180131204335

NON-CODE VACUUM AIR – 10% Accumulation, (Metric, Nm3/h) Flow coefficient = 0.878

Orifice area, in2
Set pressureDEFGHJ
(mbarg)(0.1213)(0.2157)(0.3369)(0.553)(0.864)(1.415)
2004071111182285466
2254274115189296485
2504376119196306501
2754478123201314515
3004580125206321526
3254682127209327535
3504683129212331542
3754783130214334548
4004784131215336551
4254784132216337553
4504784132216337552
4754784132216338553
5004784132216338553
5254784132216338553
5504784132216338553
5754784132216338553
6004784132216338553
6254784132216338553
6504784132216338553
6754784132216338553
7004784132216338553
7254784132216338553
7504784132216338553
7754784132216338553
8004784132216338553
8254784132216338553
8504784132216338553
8754784132216338553
9004784132216338553
9254784132216338553
9504784132216338553
9754784132216338553
10004784132216338553
NOTE
Viton® is a registered trademark of The Chemours Company.
Kalrez® is a registered trademark of E.I. du Pont de Nemours and Company.
AFLAS® is a registered trademark of the Asahi Glass Co., Ltd.
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