QF-40A Gas Cylinder Valve
1 / 3
The QF-40A is a cylinder valve for carbon dioxide, oxygen, nitrogen and argon service. It combines a pressure-sealed construction with a 60° cone seat.
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 carbon dioxide, oxygen, nitrogen and argon service.
- Cone-seat connection — The defined cone seat helps identify the required mating sealing geometry.
- Connection matching — Check the cylinder-side and equipment-side connections independently for this model.
Print / Save PDF — no form required.
Specifications
| Parameter | Value |
|---|---|
| Applicable medium | Carbon dioxide, Oxygen, Nitrogen, Argon |
| Working pressure | 20 MPa |
| Gas-tightness test pressure | 24 MPa |
| Proof test pressure | 45 MPa |
| Safety device | 30 MPa |
| Cylinder / inlet connection | PZ27.8(25E) |
| Outlet connection | BS.3(G5/8-14-RH-INT) |
| Connection sealing form | 60° cone seat |
| Valve structure | Pressure-sealed design |
| 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 | Operation / structure | Inlet | Outlet | Sealing |
|---|---|---|---|---|---|---|
| QF-40A | Carbon dioxide, Oxygen, Nitrogen, Argon | 20 MPa | Pressure-sealed design | PZ27.8(25E) | BS.3(G5/8-14-RH-INT) | 60° cone seat |
| 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.
Related Products
Connect with an Expert
Regarding: QF-40A · Carbon dioxide, Oxygen, Nitrogen, Argon · 20 MPa
Our latest insights
Technical Article
Managing specification revisions during sourcing
Read more →
Technical Article
Reading certification claims: scope and evidence
Read more →
Technical Article
Working pressure, test pressure and other ratings: what to verify
Read more →
Technical Article
Material and seal information to confirm with a supplier
Read more →
Technical Article
Start with the application: building a valve requirements brief
Read more →
Technical Article