QF-40B2 Gas Cylinder Valve
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The QF-40B2 is a cylinder valve for oxygen, nitrogen, argon and helium service. It uses a flat-face sealing interface.
The cylinder inlet and equipment outlet are specified separately for connection matching. Check both interfaces and the sealing arrangement against the mating components when selecting this exact model.
Key advantages
- Specified gas service — A cylinder-valve configuration for oxygen, nitrogen, argon and helium service.
- Flat-face mating interface — Match the flat sealing face as well as the connection designation when selecting mating equipment.
- Connection matching — Check the cylinder-side and equipment-side connections independently for this model.
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Specifications
| Parameter | Value |
|---|---|
| Applicable medium | Oxygen, Nitrogen, Argon, Helium |
| Working pressure | 20 MPa |
| Gas-tightness test pressure | 24 MPa |
| Proof test pressure | 45 MPa |
| Safety device | No safety device |
| Cylinder / inlet connection | PZ27.8(25E) |
| Outlet connection | W21.8-14-RH-EXT |
| Connection sealing form | Flat-face seal |
| Body material | HPb59-1 |
| Stem material | HPb59-1 |
| Handwheel material | ZL102 |
| Temperature range | -40 °C to 60 °C |
| Manufacturing standard / reference | GB/T 15382 |
Technical Illustration
For reference. Not to scale.
Product Configurator
| Model | Gas | Working pressure | Inlet | Outlet | Sealing |
|---|---|---|---|---|---|
| QF-40B2 | Oxygen, Nitrogen, Argon, Helium | 20 MPa | PZ27.8(25E) | W21.8-14-RH-EXT | Flat-face seal |
| Your request |
Special requirements are subject to technical confirmation. Your requests do not change the standard product specifications.
Company catalogue
No approved company catalogue is currently available. You can request specific product documents through Technical Matching.
Need this product’s specifications? Print / Save PDF — no form required.
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