SRV HP 301 & 302

Design Features
The Safety Relief Valve is designed or set to open at a predetermined set pressure to protect pressure vessels and other equipment from being subjected to pressures that exceed their design limits. When the set pressure is exceeded, the valve is forced open and a portion of the fluid is diverted through the auxiliary route.
- Spring Loaded Safety Relief Valve
- Lever And Test Gag Design
- Stellited Nozzle & Disc Seating Area ( Metal Seat Design)
- Soft Seat Design Also Available
- Maximum Blow-Down Of Minus 10 % For Steam/Gas Service And Minus 20% For Liquid Service
- Threaded Connection Acc. To Relative Std.
- Socket Weld Acc. To ASME B16.11
- Flange Connection Acc. TO ANSI, JIS, DIN, Etc.
- Factory Tested And Can Be Pre-Set To Your Requirements

Applications
Specifications
Applications
- Air, Gas, Steam & Liquid Service
- LPG / LNG, Oxygen, Technical Gas Services
- Petrochemical Industry
- Vessels And Piping Systems
- Chemical Industry
- Food And Beverage Industry
- Pharmaceutical Industry
- Other Process Industry, Etc…
Specifications
Model | HP301 & HP302 |
Model Name | Safety Relief Valve – HP |
Size Range | 3/8″ To 3″ |
Ends | Flange End /Screwed End / Socket Weld |
Set Pre Range | UP TO 690 BAR ( 10000 PSI) |
Temperature Range | -268°C To 538°C |
Comply Standard | API 520 / API 526 / ASME SEC. VIII DIV. I & || ASME B16.5 / ASME B1.20.1 / ASME B16.11 / Etc. |
Testing Standard | API 527 |
Material Grade | A105/F304/F316/DUPLEX/SS DUPLEX/TITANIUM ETC. |
Trims | C.S./S5304/S5316/DUPLEX/SS DUPLEX/TITANIUM ETC. |
Spring | SS 304 / SS 316 / SPRING STEEL / Etc. |
Gate Valve Dimensions
Size | 2” | 2 ½” | 3” | 4” | 5” | 6” | 8” | 10” | 12” | 14” | 16” | 18” | 20” | 24” |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
L | 178.0 | 191.0 | 203.0 | 229.0 | 254.0 | 267.0 | 292.0 | 330.0 | 356.0 | 381.0 | 406.0 | 432.0 | 457.0 | 508.0 |
ØD | 150.0 | 180.0 | 190.0 | 230.0 | 255.0 | 280.0 | 345.0 | 405.0 | 485.0 | 535.0 | 595.0 | 635.0 | 700.0 | 815.0 |
THK | 17.5 | 20.7 | 22.3 | 22.3 | 22.3 | 23.9 | 27.0 | 28.6 | 30.2 | 33.4 | 35.0 | 38.1 | 41.3 | 46.1 |
RFD | 92.0 | 105.0 | 127.0 | 157.0 | 186.0 | 216.0 | 270.0 | 324.0 | 381.0 | 413.0 | 470.0 | 533.0 | 584.0 | 692.0 |
PCD | 120.7 | 139.7 | 152.4 | 190.5 | 215.9 | 241.3 | 298.5 | 362.0 | 431.8 | 476.3 | 539.8 | 577.9 | 635.0 | 749.3 |
Ød | 19.05 | 19.05 | 19.05 | 19.05 | 22.23 | 22.23 | 22.23 | 25.40 | 25.40 | 28.58 | 28.58 | 31.75 | 31.75 | 34.93 |
N | 4 | 4 | 4 | 8 | 8 | 8 | 8 | 12 | 12 | 12 | 16 | 16 | 20 | 20 |
Size | 2” | 2 ½” | 3” | 4” | 6” | 8” | 10” | 12” | 14” | 16” | 18” | 20” | 24” |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
L | 216.0 | 241.0 | 282.0 | 305.0 | 403.0 | 419.0 | 457.0 | 501.0 | 762.0 | 838.0 | 914.0 | 990.0 | 1143.0 |
ØD | 165.0 | 190.0 | 210.0 | 255.0 | 320.0 | 380.0 | 445.0 | 520.0 | 585.0 | 650.0 | 710.0 | 775.0 | 915.0 |
THK | 20.7 | 23.9 | 27.0 | 30.2 | 35.0 | 39.7 | 46.1 | 49.3 | 52.4 | 55.6 | 58.8 | 62.0 | 68.3 |
RFD | 92.0 | 105.0 | 127.0 | 157.0 | 216.0 | 270.0 | 324.0 | 381.0 | 413.0 | 470.0 | 533.0 | 584.0 | 692.0 |
PCD | 127.0 | 149.2 | 168.3 | 200.0 | 269.9 | 330.2 | 387.4 | 450.8 | 514.4 | 571.5 | 628.6 | 685.8 | 812.8 |
Ød | 19.05 | 22.22 | 22.22 | 22.22 | 22.22 | 25.40 | 28.57 | 31.75 | 31.75 | 34.93 | 34.93 | 34.93 | 41.28 |
N | 8 | 8 | 8 | 8 | 12 | 12 | 16 | 16 | 20 | 20 | 24 | 24 | 24 |
Size | 2” | 2 ½” | 3” | 4” | 6” | 8” | 10” | 12” | 14” | 16” | 18” | 20” | 24” |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
L | 292.0 | 330.0 | 356.0 | 432.0 | 559.0 | 660.0 | 787.0 | 838.0 | 889.0 | 990.0 | 1092.0 | 1194.0 | 1397.0 |
ØD | 165.0 | 190.0 | 210.0 | 275.0 | 355.0 | 420.0 | 510.0 | 560.0 | 605.0 | 685.0 | 745.0 | 815.0 | 940.0 |
THK | 25.4 | 28.6 | 31.8 | 38.1 | 47.7 | 55.6 | 63.5 | 66.7 | 69.9 | 76.2 | 82.6 | 88.9 | 101.6 |
RFD | 92.0 | 105.0 | 127.0 | 157.0 | 216.0 | 270.0 | 324.0 | 381.0 | 413.0 | 470.0 | 533.0 | 584.0 | 692.0 |
PCD | 127.0 | 149.2 | 168.3 | 215.9 | 292.1 | 349.2 | 431.8 | 489.0 | 527.0 | 603.2 | 654.0 | 723.9 | 838.2 |
Ød | 19.05 | 22.22 | 22.22 | 25.40 | 28.57 | 31.75 | 34.92 | 34.92 | 38.10 | 41.28 | 44.45 | 44.45 | 50.80 |
N | 8 | 8 | 8 | 8 | 12 | 12 | 16 | 20 | 20 | 20 | 20 | 24 | 24 |
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