VLV-HPST · Air Operated Diaphragm Valve
High pressure, normally-closed, air-operated spring-type diaphragm packless valve — GasFlo HPST-4 Series. Body in brass, nickel-plated brass, or 316L stainless steel; ELGILOY® diaphragm. Max 3,500 PSIG working pressure, 100 % helium leak tested. Available in 1/4" and 3/8" inlet and outlet connections in any combination.
- Max working pressure
- 3,500 PSIG
- Actuation pressure
- 70–125 PSIG
- Flow coefficient
- Cv = 0.26
- Seat orifice
- Ø.125"
Materials
| Max working pressure | 3,500 PSIG |
|---|---|
| Actuation pressure | 70–125 PSIG |
| Flow coefficient | Cv = 0.26 |
| Seat orifice | Ø.125" |
| Seat material | PCTFE (standard), Polyimide (optional) |
| Diaphragm material | ELGILOY® |
| Temperature range | −65°F to +150°F (PCTFE seat) |
| Seat leakage (max) | 2×10⁻⁸ ATM CC/SEC He |
| Actuation port | 1/8" FNPT |
| Repair kit | RK-77102, RK-HP-ST4 |
Applications & Documents
Configure your order
Select the variables exactly as they appear in the manufacturer datasheet. The full part number is assembled automatically.
Inlet port size
single select · 2 valuesInlet connection
single select · 6 values* F and M (pipe thread) connections: available on forged body only
Outlet port size
single select · 2 valuesOutlet connection
single select · 6 values* F and M (pipe thread) connections: available on forged body only
Material
single select · 3 valuesOptional features
single select · 2 valuesSelect variables
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