Non-return valve
FUNCTION: It is used for maintaining one-way flow in pipelines. Valve opening is secured for pressure higher than 0.1 bar. Valve sealing occurs at minimum 0.2 – 0.5 bar pressure.
NOMINAL SIZES: DN 15-100.
NOMINAL PRESSURES: PN 10.
MATERIALS:
basic: PVC, PEHD, PP, PVDF, PTFE,
seats: PTFE,
gaskets: EPDM, FPM - viton.
APPLICATION TEMPERATURE: PVC: 0°C to 50°C, PEHD: -20° to 60°C, PP: -20° to 80°C, PVDF: -40° to 120°C, PTFE: -50° to 150°C.
PIPELINE CONNECTION: flange, connector with thread G, M, NPT; connector for welding and sticking; connector for butt welding.
STANDARD:
Built-in measures: EN 558-1
Connecting measures: ISO 7005 / EN 1092 / DIN 2501 PN 10 /
On special request: JIS, ANSI, GOST.
No. | PART NAME | MATERIAL |
---|---|---|
1 | Body | PVC/PEHD/PP/PVDF/PTFE |
2 | Flap | EPDM/FPM |
3 | Valve plug | PVC/PEHD/PP/PVDF/PTFE |
4 | Nut | PVC/PEHD/PP/PVDF/PTFE |
5 | Body Connector | PVC/PEHD/PP/PVDF/PTFE |
6 | Flange | PVC/PEHD/PP/PVDF/PTFE |
DN | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 |
---|---|---|---|---|---|---|---|---|---|
Ødo | 15 | 20 | 25 | 32 | 40 | 50 | 58 | 68 | 90 |
ØA | 47 | 57 | 64 | 78 | 89 | 109 | 130 | 150 | 170 |