Materials
| Body | Ductile Iron |
| Bonnet | Ductile Iron |
| Plug | Stainless Steel 304 |
| Stem | Stainless Steel 304 |
| Seat | Stainless Steel 304 |
| Seat Retainer | Stainless Steel 304 |
| Spring | Stainless Steel 304 |
| Diaphragm | EPDM + Nylon Fabric |
| Seal Ring | EPDM |
| O-Ring | NBR |
PN16/PN25 Fig No.: F6316-PSR/F6325-PSR
FEATURES & SPECIFICATIONS
Pressure relief valve operates whenever the system pressure exceeds the preset pressure of the pilot, the valve will immediately open to release excess pressure.
Keep the system in a safety environment.
Full bore globe pattern design for superior control characteristic.
Nylon reinforced diaphragm for long-lasting performance.
Durable fusion bonded epoxy coated.
Design comply with EN 1074-5.
Flange drilled to EN 1092-2 PN16 / EN 1092-2 PN25 / ANSI Class 150 (Specify on order).
Working pressure : 16bar/25bar.
Shell test pressure (x1.5) : 24bar/37.5bar.
Seat test pressure (x1.1) : 17.6bar/27.5bar.
Working temperature : -20°C … 110°C (EPDM) / -10°C … 80°C (NBR).
Suitable Media : Water.
| Body | Ductile Iron |
| Bonnet | Ductile Iron |
| Plug | Stainless Steel 304 |
| Stem | Stainless Steel 304 |
| Seat | Stainless Steel 304 |
| Seat Retainer | Stainless Steel 304 |
| Spring | Stainless Steel 304 |
| Diaphragm | EPDM + Nylon Fabric |
| Seal Ring | EPDM |
| O-Ring | NBR |
| DN | (mm) (inch) |
50 2 |
65 2½ |
80 3 |
100 4 |
125 5 |
150 6 |
200 8 |
250 10 |
300 12 |
350 14 |
400 16 |
450 18 |
500 20 |
600 24 |
| L | 230 | 290 | 310 | 350 | 400 | 480 | 600 | 730 | 850 | 980 | 1100 | 1200 | 1250 | 1450 | |
| H | 165 | 195 | 225 | 230 | 240 | 240 | 430 | 545 | 605 | 550 | 710 | 720 | 825 | 885 | |
| D | 165 | 185 | 200 | 220 | 250 | 285 | 340 | 405 | 460 | 520 | 580 | 640 | 715 | 840 | |
| A | 99 | 118 | 132 | 156 | 184 | 211 | 266 | 319 | 370 | 429 | 480 | 548 | 609 | 720 |
| No. | Description | Material |
| 1 | Cap | ABS Plastic |
| 2 | Adjusting Screw | Stainless Steel 304 |
| 3 | Jam Nut | Stainless Steel 304 |
| 4 | Spring Table | Stainless Steel 304 |
| 5 | Bonnet | Stainless Steel 304 |
| 6 | Spring | Spring Steel |
| 7 | Nut | Stainless Steel 304 |
| 8 | Spring Table | Spring Steel |
| 9 | Fixing Holder | Stainless Steel 304 |
| 10 | Screw | Stainless Steel 304 |
| 11 | Diaphragm | Nylon Reinforced + EPDM |
| 12 | Gasket | Stainless Steel 304 |
| 13 | O-Ring | NBR |
| 14 | Internal Body | Stainless Steel 304 |
| 15 | O-Ring | NBR |
| 16 | O-Ring | NBR |
| 17 | Stem | Stainless Steel 304 |
| 18 | Disc | Stainless Steel 304 + EPDM |
| 19 | Body | Stainless Steel 304 |
| No. | Part |
| 1 | Main Valve |
| 2 | Needle Valve |
| 3 | Pilot Valve (P200) |
| 4 | Ball Valve |
| 5 | Inlet Pressure Gauge |
| 6 | Strainer |
As a direct manufacturer, we have dedicated measurement, installation, and production teams to ensure a perfect fit every time.
Our representatives will contact you shortly to confirm your appointment date and time. Thank you for your interest!
