Gas Cylinder Valves Series
Gas cylinder valves are critical for controlling the flow of gases in industrial, medical, and speciality applications.
Since 2004, DSW has specialized in designing and manufacturing gas valves specifically for gases like oxygen, carbon dioxide (CO2), nitrogen, and argon for customers overseas.
The QF Series Cylinder Valves are designed to switch gas flow in cylinders containing oxygen, argon, nitrogen, and air.
Features of Gas Cylinder Valves
- Medium Available
These valves are versatile for multiple applications because they can handle a range of gases, including oxygen (O2), carbon dioxide (CO2), nitrogen (N2), and argon (Ar). - Inlet and Outlet Threads
Standard thread specifications, like GB8335 PZ27.8 for the inlet and G5/8 for the outlet, ensure compatibility with industry-standard gas cylinders and fittings, promoting safe and secure connections. - Safety Device
These valves, equipped with a built-in pressure relief device (PRD) rated at 21±1.5 MPa, can prevent over-pressurization, a crucial feature for maintaining safe operating conditions. - Working Pressure and Bore Size
With a typical working pressure (WP) of 15 MPa and bore size (DN) of 4 mm, these valves are designed to handle high-pressure environments while providing efficient gas flow control.
Types of Cylinder Valves
DSW offers an extensive line of gas cylinder valves under its QF series, each designed for specific applications and structural styles:
| Type | Medium Available | Working Pressure (MPa) | Inlet Thread | Outlet Thread | Safety Device (MPa) | Nominal Diameter (DN, mm) | Structural Style |
| 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 |
Notes:
Please be aware that thread standards vary by country, impacting compatibility with your gas cylinder. To ensure proper fit and functionality, please review the thread specifications for each valve or fitting before placing an order.
Construction and Quality Assurance
DSW’s cylinder valves are built with premium materials to withstand high pressure and temperature variations. They feature a metal-to-metal seal and precisely machined internal components for optimal durability. This robust construction ensures low life cycle costs due to fewer replacements and repairs. Furthermore, each valve goes through automated assembly and testing processes, ensuring that every product meets international quality and performance standards.
Our valves are precision-made with high-quality materials and components meeting tight Compressed Gas Association (CGA) specifications.
With a vast selection of valve types and sizes at low prices, DSW is your go-to source in China for compressed gas cylinder valves.
