800.323.0688

Series 88 / 89 Safety Valves



88 Cut View


Series 88 / 89
Item Description Brass Stainless
1 Body B16/B283 316 Stainless
2 Disc B62 316 Stainless
3 Bonnet B584 B584
4 Lock Screw B16 B16
5 Lower Ring B584 B584
6 Ball Stainless Stainless
7 Disc Nut B16 B16
8 Spring Support B16 B16
9 Lift Lever Plated Steel Plated Steel
10 Seal Wire Steel / Lead Steel / Lead
11 Hood Aluminum Aluminum
12 Lifter Nut B16 B16
13 Jam Nut 18-8 18-8
14 Lever Pin B16 B16
15 Pressure Screw B16 B16
16 Locknut B16 B16
17 Spring Post B16 B16
18 Spring Plate B16 B16
19 Spring 302/17-7 302/17-7
20 Nameplate Stainless Stainless
21 Hood B16 B16
22 Washer Nylon Nylon







Series 88 / 89
Size I.D. Inlet Outlet DN Dimensions – In. (mm) Weight
Lb - (Kg)
A-88 A-89 B C
A1 1/2” 1/2” 15 6­˗7/8" (175) 6" (152) 2­˗1/2" (64) 1­˗3/8" (35) 1.7 (0.8)
A2 1/2” 3/4” 15 6­˗7/8" (175) 6" (152) 2­˗1/2" (64) 1­˗3/8" (35) 1.7 (0.8)
B1 3/4” 3/4” 20 7­˗1/8" (181) 6­˗1/4" (159) 2­˗5/8" (67) 1­˗1/2" (38) 2.2 (1)
B2 3/4” 1” 20 7­˗1/8" (181) 6­˗1/4" (159) 2­˗5/8" (67) 1­˗1/2" (38) 2.2 (1)
C1 1” 1” 25 7­˗7/8" (200) 7­˗3/8" (187) 2­˗7/8" (73) 1­˗3/4" (44) 3 (1.4)
C2 1” 1-1/4” 25 7­˗7/8" (200) 7­˗3/8" (187) 2­˗7/8" (73) 1­˗3/4" (44) 3 (1.4)
D1 1-1/4” 1-1/4” 32 8­˗3/4" (222) 8­˗1/4" (210) 3­˗3/8" (86) 2" (51) 4 (1.8)
D2 1-1/4” 1-1/2” 32 8­˗3/4" (222) 8­˗1/4" (210) 3­˗3/8" (86) 2" (51) 4 (1.8)
E1 1-1/2” 1-1/2” 40 9­˗7/8" (251) 9­˗1/2" (241) 3­˗1/2" (89) 2­˗1/8" (54) 5.8 (2.6)
E2 1-1/2” 2” 40 9­˗7/8" (251) 9­˗1/2" (241) 3­˗1/2" (89) 2­˗1/8" (54) 5.8 (2.6)
F1 2” 2” 50 11­˗1/4" (286) 11" (279) 3­˗7/8" (98) 2­˗5/8" (67) 9.7 (4.4)
F2 2” 2-1/2” 50 11­˗1/4" (286) 11" (279) 3­˗7/8" (98) 2­˗5/8" (67) 9.7 (4.4)
G1 2-1/2” 2-1/2” 65 13­˗7/8" (352) 13" (330) 5­˗1/4" (133) 3­˗5/8" (92) 19 (8.6)
G2 2-1/2” 3” 65 13­˗7/8" (352) 13" (330) 5­˗1/4" (133) 3­˗5/8" (92) 19 (8.6)
H1 3” 3” 80 15" (381) 13­˗1/4" (337) 5­˗5/8" (143) 3­˗5/8" (92) 19 (8.6)






SEATING

88 PTFE View


PTFE Soft Seat
Item Description Brass Stainless
1 Body B16/B283 316 Stainless
5 Lower Ring B584 B584
23 Disc Wings B16 316 Stainless
24 Insert PTFE PTFE
25 Disc B16 316 Stainless
26 Support B16 B16






ORDERING


Series 88 / 89 Part Numbers
88 C 2 A 1 M 1 K 1 125
Series Inlet Outlet Metals Connection Seating Cap Service Options Set
88 A- 1/2" 1- Same Size
as Inlet
A- Brass/Bronze 1- NPT MxF M- Metal 1- Lift lever K- ASME VIII Air/gas 1- None Ex.125
89 B- 3/4" B- 316 SS Nozzle
Disc w/Bronze
2- NPT FxF P- PTFE 2- Closed cap 2- Chrome
Plating


C- 1" 2- Next Larger
than Inlet
3- BSPT MxF

3- Packed Lift Lever L- Non-code Air/gas

D- 1-1/4" L- No Lead Nozzle
Disc w/Bronze
4- BSPT FxF

4- Lift Lever Anti-
Vibration Spring
3- O2 Cleaned

E- 1-1/2"

8- BSPP MxF

N- Non-code Steam

F- 2"

M- 316 SS/ No
Lead Bronze
9- BSPP FxF

5- Closed Cap
with Test Gag




G- 2-1/2"











H- 3"







6- Packed Lever
with Test Gag






























8- Closed Cap
with Viton Seal

























CAPACITIES

Air


Series 88 / 89 Air Capacity
SCFM @ 10% over Set Pressure

Series 88 / 89 Air Capacity
Nm3/hr @10% over Set Pressure
Slope .644 .93 2.274 3.504 4.90 7.404 13.416 16.98
Slope .644 .93 2.274 3.504 4.90 7.404 13.416 16.98
Set
PSI
A
1/2”
B
3/4”
C
1”
D
1-1/4”
E
1-1/2”
F
2”
G
2-1/2”
H
3”

Set
Bar
A
1/2”
B
3/4”
C
1”
D
1-1/4”
E
1-1/2”
F
2”
G
2-1/2”
H
3”

5.0 15 21 52 80 111 168 305 385
.2 23 33 80 123 171 259 470 594
10 18 26 63 97 136 205 372 470
.5 27 39 96 149 208 314 569 720
15 21 30 74 115 160 242 439 555
1 35 51 124 192 268 405 734 929
20 24 35 86 132 185 279 506 640
2 51 74 180 278 389 587 1064 1347
25 27 40 97 150 209 316 573 725
3 68 99 242 372 521 787 1426 1804
30 31 44 108 167 234 353 640 810
4 86 124 303 467 653 987 1789 2265
35 34 49 121 186 261 394 714 903
5 103 149 365 562 786 1188 2153 2725
40 38 55 133 206 288 435 788 997
6 121 174 427 657 919 1389 2516 3185
45 41 60 146 225 315 475 861 1090
7 138 200 488 752 1052 1589 2880 3645
50 45 65 158 244 342 516 935 1184
8 156 225 550 847 1185 1790 3243 4105
55 48 70 171 264 368 557 1009 1277
9 173 250 611 942 1317 1991 3607 4565
60 52 75 184 283 395 598 1083 1370
10 191 275 673 1037 1450 2191 3970 5025
65 56 80 196 302 422 638 1156 1464
11 208 300 735 1132 1583 2392 4334 5485
70 59 85 209 321 449 679 1230 1557
12 225 326 796 1227 1716 2592 4698 5945
75 63 90 221 341 476 720 1304 1650
13 243 351 858 1322 1848 2793 5061 6406
80 66 96 234 360 503 760 1378 1744
14 260 376 919 1417 1981 2994 5425 6866
85 70 101 246 379 530 801 1452 1837
15 278 401 981 1512 2114 3194 5788 7326
90 73 106 259 398 557 842 1525 1931
16 295 426 1043 1607 2247 3395 6152 7786
95 77 111 271 418 584 883 1599 2024
17.2 316 457 1117 1721 2406 3636 6588 8338
100 80 116 284 437 611 923 1673 2117









120 94 136 334 514 719 1086 1968 2491









140 109 157 384 591 827 1249 2263 2865









160 123 177 434 668 934 1412 2558 3238









180 137 198 484 745 1042 1575 2854 3612









200 151 218 534 822 1150 1738 3149 3985









220 165 239 584 899 1258 1901 3444 4359









240 179 259 634 977 1366 2063 3739 4732









250 187 269 659 1015 1420 2145 3887 4919









Set pressures below 15 PSI (1.03 Bar) are NON-Code.
2-1/2" ("H") and 3" ("J") are NON-Code.

Maximum back-pressure is 10% of set pressure or 50 PSI (3.45 Bar) whichever is less.
Lifting Device as required by the ASME, ASME Section VIII: UG136(3) Each pressure relief valve on air, water at the valve inlet that exceeds 140°F (60°C), excluding over-pressure or relief events, or steam service shall have a substantial lifting device which when activated will release the seating force on the disc when the pressure relief valve is subjected to a pressure of at least 75% of the