Gas Cylinder Valves Series
DSW provides high-pressure, high-temperature valves designed and built for extreme longevity.
These are the industry’s most rugged, in-line repairable valves with the lowest life cycle cost.
They are widely used in the gas industry, including industrial gas, medical gas, high-purity gas, specialty gas, mixture gas, and standard gas.
Oxygen/Co2/Nitrogen/Argon Cylinder Valves
| TYPE | MEDIUM AVAILABLE | WP(Mpa) | INLET THREAD | OUTLET THREAD | SAFETY DEVICE(Mpa) | DN(mm) | STRUCTURAL STYLE |
| QF-2 | O2,N2 | 15 | GB8335 PZ27.8 | G5/8 | 21±1.5 | 4 | Valve type |
| QF-2B | O2,N2 | 15 | GB8335 PZ27.8 | G5/8-LH | 21±1.5 | 4 | Valve type |
| QF-2B1 | O2,N2 | 15 | G1/2 | W22×1/14 | 21±1.5 | 4 | Valve type |
| QF-2C | O2,N2 | 15 | GB8335 PZ27.8 | G5/8 | 21±1.5 | 4 | Valve type |
| QF-2D | O2,N2 | 15 | GB8335 PZ27.8 | Internal thread G5/8 | 21±1.5 | 4 | Valve type |
| QF-2E | O2,N2 | 15 | JIS B 8246 V1 φ20 | W22×1/14 | 4 | Valve type | |
| QF-2F | O2,N2 | 15 | GB8335 PZ27.8 | G5/8 | 21±1.5 | 4 | Valve type |
| QF-2G | O2,N2 | 15 | GB8335 PZ27.8 | G5/8 | 21±1.5 | 4 | Shaft type |
| QF-2M | O2,N2 | 15 | GB8335 PZ27.8 | G1/2 | 21±1.5 | 4 | Valve type |
| QF-2P | O2,N2 | 15 | GB8335 PZ27.8 | G5/8 | 21±1.5 | 4 | Valve type |
| QF-4 | O2,N2 | 15 | GB8335 PZ27.8 | G3/4 | 21±1.5 | 4 | Valve type |
| QF-5 | O2,N2 | 20 | GB8335 PZ27.8 | G5/8 | 28±2 | 4 | Valve type |
| QF-6 | O2,N2 | 15 | GB8335 PZ27.8 | Internal thread G5/8 | 4 | Valve type | |
| QF-7 | O2,N2 | 15 | GB8335 PZ27.8 | Internal thread G5/8 | 4 | Needle form | |
| QF-8 | O2,N2 | 15 | GB8335 PZ27.8 | G1/2 | 4 | Shaft type | |
| QF-12 | O2,N2 | 15 | GB8335 PZ19.2 | G5/8 | 21±1.5 | 4 | Valve type |
| QF-20 | O2,N2 | 15 | GB8335 PZ19.2 | G1/2 | 21±1.5 | 2 | Diaphragm type |
| QF-21 | O2,N2 | 15 | GB8335 PZ19.2 | W21.8×1/14 | 21±1.5 | 2 | Diaphragm type |
| QF-22 | O2,N2 | 15 | GB8335 PZ27.8 | W21.8×1/14 | 21±1.5 | 4 | Valve type |
| QF-25 | O2 | 15 | GB8335 PZ19.2 | φ7 Hose | 2 | Needle form | |
| QF-27 | O2,N2 | 15 | JIS B 8246 V1 | W22×1/14 | 21±1.5 | 3 | Valve type |
| F-1 | O2,N2 | 15 | GB8335 PZ27.8 | Internal thread W23×1/14 | 21±1.5 | 4 | Valve type |
| F-2 | O2,N2 | 15 | JIS B 8246 V2 | Internal thread W23×1/14 | 21±1.5 | 4 | Valve type |
| F-3 | O2,N2 | 15 | BS341 1×1/14 | Internal thread G5/8 | 21±1.5 | 4 | Shaft type |
| DF-4 | O2,N2 | 15 | GB8335 PZ27.8 | G5/8 | 21±1.5 | 4 | Shaft type |
GAS CYLINDER VALVES 3/4″ -14 NGT – ARGON, HELIUM, NITROGEN
This DSW argon cylinder valve is made from heavy-duty forged brass and is specifically designed for use with argon, helium, or nitrogen in steel inert gas cylinders.
Typical applications include welding and other industrial uses.
PREMIUM CONSTRUCTION
Heavy-duty forged brass body for durability and high-pressure
Precisely machined internal components meet the most stringent international valve performance standards
Metal-to-metal seal below bonnet threads prevents pressure in the threads at the top of the valve body
GAS CYLINDER VALVES
Pressure relief device
Automated assembly and testing processes ensure exceptional quality
100% helium leak tested
Pressure Relief Device (PRD) is a unitized plug design that provides excellent flow characteristics, ensures proper assembly and tamper resistance
Direct-drive stem design with optimized O-ring or double O-ring seal reduces friction and operates at exceptionally low torque levels
Tapped for dip tube as required
