PN16 Non Return Valve
PN16 Flanged End
The automated PN16 Non-Return Valve is made to avoid flow reversal in fluid pipe systems. The forward flow of fluid keeps the valves open, and the back pressure of the fluid, the weight of the closing mechanism, or a spring force closes them.
Standard Material:
| P. No. | Description | Materials | Specifications |
|---|---|---|---|
| 1. | BODY | C.S. | ASTMA 216 GR. WCB |
| 2. | BODY SEAT RING (HB 250 Min.) | 13% Cr. STEEL | ASTMA 182 Gr. F6a or its Eq. |
| 3. | DISC | C.S. | ASTMA 216 GR. WCB |
| 4. | BUSH | 13% Cr. STEEL | ASTMA 182 Gr. F6a or its Eq. |
| 5. | GASKET | S.S. (TYPE-304) SPIRAL WOUND GRAPHIOL FILLED | |
| 6. | COVER | C.S. | ASTMA 216 Gr. WCB |
| 7. | NUTS | H.T. STEEL | ASTMA 194 Gr.2H |
| 8. | STUDS | ALLOY STEEL | ASTMA 193 Gr.B7 |
Pressure / Temperature Ratings BS:5160
| NOMINAL PRESSURE | MAX. PERMISSIBLE GAUGE WORKING PRESSURE °C | ||||||
|---|---|---|---|---|---|---|---|
| 10 TO 120°C | 200°C | 250°C | 300 °C | 350 °C | 400 °C | 425 °C | |
| PN-40 | 40 bar | 40 bar | 38 bar | 33 bar | 28 bar | 23 bar | 20 bar |
Test Pressure:
- Class : PN16
- Shell Test (HYDROSTATIC) : 60 Bar
- Seat Test (HYDROSTATIC) : 40 Bar