Connections: | Threaded NPT |
Temperature range: (Model 71S) | -20° to 406°F (-29° to 208°C) |
Temperature range: (Models 171, 171P, 171S) | -20° to 550°F (-29° to 288°C) |
Pressure range: (Model 71S) | 1 to 250 psig (0.07 to 17.2 barg) |
Pressure range: (Models 171, 171P, 171S) | 1 to 400 psig (0.07 to 27.6 barg) |
Model 71S: cast iron body with SS seat and disc. Pressure-tight hood.
Model 171: carbon steel with SS seat and disc. Pressure-tight hood.
Model 171P: as model 171 with packed lift lever.
Model 171S: all 316 SS construction including spring. Available with pressure-tight hood or packed lift lever.
No | Part Name | Material | Material | Material |
1 | Nozzle | SS A479-316[1] | SS A479-316[1] | SS A479-316[1] |
2 | Body gasket | PTFE | PTFE | PTFE |
2 | Disc | SS A743-CF8M | SS A743-CF8M | SS A743-CF8M |
4 | Stem end | SS A479-316 | SS A479-316 | SS A479-316 |
5 | Stem | SS A479-316 | SS A479-316 | SS A479-316 |
6 | Spring | SS A313-316 | SS A313-316 | SS A313-316 |
7 | Body | Cast iron 126 | Steel A216-WCB | SS A351-CF8M |
8 | Spring step | SS A479-316 | SS A479-316 | SS A479-316 |
9 | Compression screw | SS A479-316 | SS A479-316 | SS A479-316 |
10 | Cap gasket | PTFE | PTFE | PTFE |
11 | Jam nut | SS A479-316 | SS A479-316 | SS A479-316 |
12 | Cap | Steel A108 | Steel A108 | SS A479-316 |
No | Part Name | Material | Material |
1 | Nozzle | SS A479-316[1] | SS A479-316[1] |
2 | Body gasket | PTFE | PTFE |
3 | Body | Steel A216-WCB | SS A351-CF8M |
4 | Disc | SS A743-CF8M | SS A743-CF8M |
5 | Stem end | SS A479-316 | SS A479-316 |
6 | Spring step | SS A479-316 | SS A479-316 |
7 | Stem | SS A479-316 | SS A479-316 |
8 | Spring | SS A313-316 | SS A313-316 |
9 | Compression screw | SS A479-316 | SS A479-316 |
10 | O-ring | NBR | NBR |
11 | Cap | SS A296-CF8M | SS A296-CF8M |
12 | Jam nut | SS A479-316 | SS A479-316 |
13 | Lift cam | SS A296-CF8M | SS A296-CF8M |
14 | Cotter pin | Steel commercial | Steel commercial |
15 | Lever | Steel A108 zinc plated | Steel A108 zinc plated |
16 | Drive screw | SS commercial | SS commercial |
17 | Retainer nut | SS A479-316 | SS A479-316 |
18 | Lift nut | Steel A108 zinc plated | Steel A108 zinc plated |
Set pressure | Valve | inlet | and | outlet | size | |
(psig) | ½” | ¾” | 1” | 1¼” | 1½” | 2” |
1 | 1 | 2 | 4 | 6 | 10 | 19 |
3 | 2 | 4 | 6 | 11 | 17 | 32 |
5 | 2 | 5 | 8 | 14 | 22 | 42 |
7 | 2 | 6 | 9 | 16 | 26 | 49 |
10 | 3 | 7 | 11 | 20 | 31 | 59 |
20 | 4 | 9 | 16 | 28 | 43 | 84 |
30 | 5 | 11 | 20 | 34 | 53 | 102 |
40 | 6 | 13 | 23 | 39 | 61 | 118 |
50 | 7 | 15 | 25 | 44 | 68 | 132 |
60 | 7 | 16 | 28 | 48 | 75 | 145 |
70 | 8 | 17 | 30 | 52 | 81 | 156 |
80 | 8 | 19 | 32 | 55 | 87 | 167 |
90 | 9 | 20 | 34 | 59 | 92 | 177 |
100 | 9 | 21 | 36 | 62 | 97 | 187 |
110 | 10 | 22 | 37 | 65 | 102 | 196 |
120 | 10 | 23 | 39 | 68 | 106 | 205 |
130 | 11 | 24 | 41 | 71 | 110 | 213 |
140 | 11 | 25 | 42 | 73 | 115 | 221 |
150 | 11 | 25 | 44 | 76 | 119 | 229 |
160 | 12 | 26 | 45 | 78 | 123 | 236 |
170 | 12 | 27 | 47 | 81 | 126 | 244 |
180 | 13 | 28 | 48 | 83 | 130 | 251 |
190 | 13 | 29 | 49 | 86 | 134 | 258 |
200 | 13 | 29 | 50 | 88 | 137 | 264 |
210 | 14 | 30 | 52 | 90 | 140 | 271 |
220 | 14 | 31 | 53 | 92 | 144 | 277 |
230 | 14 | 32 | 54 | 94 | 147 | 284 |
240 | 14 | 32 | 55 | 96 | 150 | 290 |
250 | 15 | 33 | 56 | 98 | 153 | 296 |
260 | 15 | 34 | 58 | 100 | 156 | 301 |
270 | 15 | 34 | 59 | 102 | 159 | 307 |
280 | 16 | 35 | 60 | 104 | 162 | 313 |
290 | 16 | 35 | 61 | 106 | 165 | 318 |
300 | 16 | 36 | 62 | 107 | 168 | 324 |
310 | 16 | 37 | 63 | 109 | 171 | 329 |
320 | 17 | 37 | 64 | 111 | 173 | 334 |
330 | 17 | 38 | 65 | 113 | 176 | 340 |
340 | 17 | 38 | 66 | 114 | 179 | 345 |
350 | 17 | 39 | 67 | 116 | 181 | 350 |
360 | 18 | 39 | 68 | 118 | 184 | 355 |
370 | 18 | 40 | 69 | 119 | 186 | 360 |
380 | 18 | 41 | 70 | 121 | 189 | 364 |
390 | 18 | 41 | 70 | 122 | 191 | 369 |
400 | 19 | 42 | 71 | 124 | 194 | 374 |
Inlet and outlet female, NPT | Dimensions (in) | ||||
(in) | A | B | C 71S, 171, 171S | C 171P, 171S | Weight (lb) |
½[1] | 27/16 | 1¾ | 6⅞ | 8⅜ | 2½ |
¾ | 27/16 | 1¾ | 6⅞ | 8⅜ | 2⅝ |
1 | 211/16 | 1¾ | 7 | 89/16 | 3¼ |
1¼ | 35/16 | 2⅛ | 7¾ | 8¾ | 5½ |
1½ | 31/8 | 27/16 | 8¼ | 9¾ | 7¼ |
2 | 43/16 | 2¾ | 9¾ | 11⅛ | 12 |
Example: | 071S | - | C | 01 | - | M | G | 0250 |
Model 071S Cast iron 0171 Cast steel 171S Cast SS 171P Cast steel | ||||||||
Connection size C ½" inlet x ¾" outlet D ¾" inlet x ¾" outlet E 1" inlet x 1" outlet F 1¼" inlet x 1¼" outlet G 1½" inlet x 1½" outlet H 2" inlet x 2" outlet | ||||||||
Variation 1 Catalog standard 2 Packed lever (Model 171S) | ||||||||
Design revision Indicates non-interchangeable revision Dash (-) if original design | ||||||||
Service M Non-code liquid | ||||||||
Spring material G 316 SS | ||||||||
Set pressure 0005 5 psig 0400 400 psig |