610-497-2600

MODELS 91/218/228 LIQUID RELIEF VALVES

MODEL 228

Features

• Bolted bonnet allows easy inspection and servicing without removal from system.
• Quality cast iron body and bonnet.
• Insert and disc available in bronze or stainless steel and lapped for optimum performance.
• Springs are steel with plating for corrosion protection.
• High lift, wing-guided disc offers high relieving capacity.
• Pivot between disc and spring corrects misalignment and compensates for spring side thrust.
• ANSI B16.1 rated 250# inlet and 125# outlet flanged connections as standard.
• Optional epoxy-coated internal body and bonnet for corrosive environments (to 125°f (52°C)).

GENERAL APPLICATION

Liquid relief valves suitable for over pressure relief, pressure regulation and protection of pumps, tanks, lines and hydraulic systems. Models 218, 228 are UL 1478 listed and FM approved for fire pump service.

TECHNICAL DATA

Connections:1½” to 4” FNPT
1½” to 6” flanged
Temperature range[1]:-20° to 406°F (-29° to 208°C)
Temperature ranges[1]: (Model 91)5 to 400 psig (0.34 to 27.6 barg)
Temperature ranges[1]: (218, 228)60 to 200 psig (14.1 to 13.8 barg)

NOTE

1. For other pressure and temperature limits consult ANSI B16 cast iron flange standards.

MODELS OVERVIEW

Model 91: bronze trim with pressure-tight cap. suitable for maximum back pressure of 60 psig (4.1 barg)[1]

Model 218: bronze trim, UL and FM approved for fire pump installations. special design offers minimum set pressure of 60 psig. Easily adjustable with handwheel to 200 psig (13.8 barg) (175 psig (12.1 barg) with optional 125# inlet flange).
Model 228: bronze trim with pressure-tight cap. UL and FM approved for fire pump installations. Suitable for maximum back pressure of 60 psig (4.1 barg)[1]. Supplied with handwheel.

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.

PARTS AND MATERIALS – MODEL 91[3, 6]– NON-CODE, LIQUID RELIEF VALVE

NoPart NameMaterials
1BodyIron, A126 class A or B
2O-ringNBR[9]
2Insert[1]
4Disc[1]
5Spring step[2]
6SpringSteel, aluminum coated
7Bonnet gasketFiber and nitrile, klinger C-4400 or C-4401
8Hex head cap screw[3]Steel, SAE Gr. 5
9BonnetIron, A126 class A or B
10Cap gasket[5]Fiber and nitrile, klinger C-4400 or C-4401
11[7]Compression screw bushingIron, A536 80-55-06
12Jam nut[4]
13Compression screw[4]
14Cap[5]Iron, A126 class A or B
15Socket set screwSteel, commercial
16Stem[2]
17Stem end[8]
Items not shown
Handwheel[5]Iron, A126 class A or B
Handwheel jam nut[5]Steel plated, commercial

NOTES

1. Disc (item 4) and insert (item 3) material bronze, B-584 alloy 84400 or B62, also available in SS, A743 Gr. CF-8, as a package option.
2. Material CS with anti-corrosion coating, commercial Gr. or brass, B16.
3. 6 bolts required for 3” and 4” sizes, and 8 bolts required for 6” size.
4. Material brass, B16 or bronze, B584 casting.
5. Handwheel option available, delete cap (item 14) and gasket (item 10).
6. Flanges per ANSI B16.1. 250# inlet flange standard and 125# inlet flange optional. Outlet flange 125#.
7. Only used in orifices K through P.
8. Material SST or brass, B16.
9. For variation 22 o-ring material is viton®.

MODEL 91

PARTS AND MATERIALS – MODELS 218 AND 228 – NON-CODE

NoPart NameMaterials
1Body[1]Iron, A126 class A or B
2O-ringNBR
2Insert[2]
4Disc[2]
5Spring step[3]
6SpringSteel, aluminum coated
7Bonnet gasketFiber and nitrile, klinger C-4400 or C-4401
8Hex head cap screw[3]Steel, sae Gr.[5]
9BonnetIron, A126 class A or B
10Compression screw bushingBrass, B16
11[7]Jam nutBrass, B16
12Compression screw[5]
13HandwheelIron, A126 class A or B
14Handwheel locknutSteel plated, commercial Gr.
15Spring pinSteel, commercial Gr.
16Socket set screwSteel, commercial Gr.
17Stem
Compression screw locknut wrench[6]
Installation instruction[6]
[3]
Steel, a366
Paper, commercial Gr.
18Stem end[3]
Model 228 only
18Cap[7]Iron, A126 class A or B
19Cap gasket[7]Gasket, klinger silicone C-4400

NOTES

1. Flanges per ANSI B16.1. 250# inlet flange standard and 125# inlet flange optional. Outlet flange 125#.
2. Disc (item 4) and insert (item 3) material bronze, B-584 alloy 84400 or B62, also available in SS, A743 Gr. CF-8, as a package option.
3. Material Cs with anti-corrosion coating, commercial Gr., brass, B16 or SS, a582 TY 416.
4. 6 bolts required for 3” and 4” sizes, and 8 bolts required for 6” size.
5. Material brass, B16 or bronze, B584 casting (Model 218 only), B584 alloy 84400 (Model 228 only).
6. Not shown on assembly.
7. Cap (item 18), gasket (item 19) and locknut (item 11) factory installed. Handwheel (item 13) shipped unassembled (Models 218 and 228).

MODEL 218

MODEL 2228

SPECIFICATIONS – MODEL 91[1]

Valve dimensionsMin/maxApprox.
ModelValve sizeConnectionsANSI standard(in)set pressureweight
number(in)InletOutletABC(psig)(lb)
091A-G1½ x 1½FNPTFNPT11⅞5/40027
091H-G1½ x 1½125# FL125# FL11¼5/17536
091K-G1½ x 1½250# FL125# FL511¼5/40036
09A-H2 x 2FNPTFNPT4⅛4⅛12¾5/40035
091H-H2 x 2125# FL125# FL4⅝12¾5/17547
091K-H2 x 2250# FL125# FL54⅝12¾5/40047
091A-J2½ x 2½FNPTFNPT14¼5/40048
091H-J2½ x 2½125# FL125# FL14¼5/17565
091K-J2½ x 2½250# FL125# FL14¼5/40065
091A-K3 x 3FNPTFNPT5⅞5⅞215/40081
091H-K3 x 3125# FL125# FL5⅞5⅞21¾5/17598
091K-K3 x 3250# FL125# FL5⅞21¾5/40098
091A-M4 x 4FNPTFNPT6⅝265/400132
091H-M4 x 4125# FL125# FL6⅝265/175170
091K-M4 x 4250# FL125# FL6⅝265/400170
091H-P6 x 6125# FL125# FL9⅜315/175340
091K-P6 x 6250# FL125# FL9⅜315/300340

SPECIFICATIONS – MODELS 218 AND 228[1]

Valve dimensionsMin/maxApprox.
ModelValve sizeConnectionsANSI standard(in)set pressureweight
number(in)InletOutletABC(218)C(228)(psig)(lb)
2*8A-K[2]3 x 3FNPTFNPT6⅛5⅞20⅝21⅝60/20085
2*8H-K[2]3 x 3125# FL125# FL6⅛5⅞20⅝21⅝60/175110
2*8K-K[2]3 x 3250# FL125# FL6⅛5⅞20⅝21⅝60/200110
2*8A-M [[2]4 x 4FNPTFNPT6⅝252660/200143
2*8H-M [2]4 x 4125# FL125# FL6⅝252660/175185
2*8K-M[2]4 x 4250# FL125# FL6⅝252660/200185
2*8H-P[2]6 x 6125# FL125# FL9⅜303160/175350
2*8K-P[2]6 x 6250# FL125# FL9⅜303160/200350
Dimensions are for reference only.
FL      Flange
FNPT      Female NPT

NOTES

1. Temperature limits -20°F to 406°F.
2. Replace asterisk with desired model number. Data applicable to Models 218, 228.

MODEL 91

MODELS 218, 228

CAPACITIES – NON-CODE LIQUID – 25% ACCUMULATION (GPM) – MODEL 91 ONLY

Set pressureInlet size
(psig)1½”2”2½”3”4”6”
5315687125224447
104479123177316632
2063111174150447894
30771362133075481095
40881572463546331265
509941762753967071414
601081933014347751549
701172083254688371673
801252233485018951789
901332363695319491897
10014024938956010002000
11014726140858710492097
12015327342661310962191
13015928444363811402280
14016529546066311832366
15017130547668612252449
16017731549270812652530
17018232550773013042607
18018833452275113422683
19019334353677213792757
20019835255079214142828
21020336156381114492898
22020736957783114832966
23021237859084915173033
24021738660286715493098
25022139461588515813162
26022540162790316133225
27023040963992016433286
28023441765093716733346
29023842466295417033406
30024243167397017323464
3102464386849861761
32025044569510021789
33025445270610171817
34025845971710331844
35026146672710481871
36026547273810621898
37026947974810771924
38027248575810921950
39027649276811061975
40028049877711202000

LIQUID OVERPRESSURE FACTORS

To determine capacities at other than 25% overpressure/accumulation, multiply capacity shown by:
10% acc. = 0.6
15% acc. = 0.8
20% acc. = 0.9

MODELS 218, 228 CAPACITIES

UL/FMCertified capacities[1]
Size (in)GPM
3 x 3500
4 x 41000
6 x 62000

NOTE

1. Rated at 100 psig set pressure and 25% accumulation 125 psig.

SELECTION GUIDE

Example:091K-M01AMS0400
Model

091

218

228
Connection type

A      Female x female NPT

H      125# flange x 125# flange

K      250# flange x 125# flange
Connection size

G      1½" inlet x 1½" outlet

H      2" inlet x 2" outlet

J       2½" inlet x 2½" outlet

K      3" inlet x 3" outlet

M      4" inlet x 4" outlet

P      6" inlet x 6" outlet
Variation

01      Catalog standard

02      SS seat and disc (all models except Model 218K-P)

03      Model 91 w/handwheel (K, M and P inlet only)

03      SSseat and disc (Model 218K-P only)

03      Models 218 and 228 epoxy coated body and bonnet internal surfaces (except Model 218K-P)

04      Model 218K-P epoxy coated body and bonnet internal surfaces

05      Model 91 epoxy coated body and bonnet internal surfaces

06SS seat and disc with epoxy coated body and bonnet internal surfaces

22Model 91 ss seat and disc with viton® o-ring seal
Design revision

Indicates non-interchangeable revision

Current design at revision ’A’
Valve service

M      Liquid
Spring material

C      Aluminum coated, ASTM A231 steel (G, H, J inlet sizes only)

S      Aluminum coated, ASTM A229 steel (K, M, P inlet sizes only)
Set pressure

0005     5 psig
0400     400 psig

NOTE

Viton® is a registered trademark of The Chemours Company.
WordPress Themes