QF-7B Needle Valve
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The QF-7B is a needle-type cylinder valve for oxygen, nitrogen and argon service. It uses a 60° cone seat.
The needle-type layout and packed gland identify this valve configuration. Check the cylinder-side and equipment-side interfaces together with the stated service before selecting the model.
Key advantages
- Specified gas service — A cylinder-valve configuration for oxygen, nitrogen and argon service.
- Needle-type construction — The needle-type layout and packed gland distinguish this valve configuration.
- Cone-seat connection — The defined cone seat helps identify the required mating sealing geometry.
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Specifications
| Parameter | Value |
|---|---|
| Applicable medium | Oxygen, Nitrogen, Argon |
| Working pressure | 15 MPa |
| Gas-tightness test pressure | 18 MPa |
| Proof test pressure | 33.75 MPa |
| Safety device | No safety device |
| Cylinder / inlet connection | PZ27.8(25E) |
| Outlet connection | BS.3(G5/8-14-RH-INT) |
| Connection sealing form | 60° cone seat |
| Valve structure | Packed-gland design (needle type) |
| Body material | HPb59-1 |
| Seal material | PTFE |
| Stem material | 304 stainless steel |
| 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-7B | Oxygen, Nitrogen, Argon | 15 MPa | Packed-gland design (needle type) | 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.
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