| Customization: | Available |
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| Media: | Gas |
| Temperature: | Ordinary Temperature |
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Package and delivery
Selling units:Single itemSpecification
| Technical data |
| Port Dimension : 3/8''~1/2''or 10mm~12mm |
| Flow coefficient :Cv=0.8 |
| Internal diameter (id) : 0.31in.(8mm) |
| Maximum working pressure |
| Manual : 34.4bar(500psig) Pneumatic: 10bar(150psig) |
| Pneumatic actuator working pressure :4.2~6.2bar(60~90psig) |
| Working temperature |
| PCTFE:-23~65ºC(-10~150°F) |
| PFA:-23~150ºC (-10~302°F) Vespel:-23~204ºC(-10~400ºF) |
| Leakage rate (Helium) |
| Inside : ≤4×10^-9 mbar.l/s |
| Outside : ≤4×10^-9 mbar.l/s |
| Clean process |
| BA-grade : Welded joints are cleaned in accordance with our standard cleaning and packaging specifications. Ra 20uin.(0.51um) |
| EP-grade : Provides controlled surface finish, electrolytic polishing Ra0.13μm, ultrasonic cleaning with deionized water. To order, add the suffix -EP to the order number. Ra 8uin.(0.2 um) |
Definition
Pneumatic bellow valve is a kind of control valve widely used in the field of industrial automation, which is known for its high precision, high stability and high reliability.The bellow valve regulates the flow rate of the medium by adjusting the opening of the valve.
Working theory
The working principle of the pneumatic bellows valve is based on the pneumatic signal received by the actuator to control the movement of the bellows, so as to change the flow area of the valve and realize the adjustment of the medium flow. When the pneumatic signal is activated, the bellows is pushed to move, so as to adjust the flow area and achieve the purpose of changing the flow rate. When the pneumatic signal disappears, the flow area returns to its initial state, ensuring precise control of the medium.
Features
| Metal-to-metal gasket seal ensures no leakage. |
| Precision-constructed bellows for reliability. |
| Non-rotating stem tip increases cycle life. |
| Manual and pneumatic actuator options. |
| Pneumatic actuator rotates 360° for easy air line connection. |
| Panel and bottom mounting available. |
| Normally closed pneumatic valves can be supplied with indicating switches. |
FAQ
Founded in 2011, Wofly Technology specializes in high-purity fluid control valves and components, and provides integrated gas distribution systems. Our ISO 9001-certified product portfolio-including diaphragm valves, pressure regulators, and precision instrumentation valves-complies with CE, RoHS, and SEMI S2 standards. Engineered for critical applications in semiconductor fabrication, hydrogen energy infrastructure, and photovoltaic manufacturing, our solutions ensure leak-tight performance in ultra-clean environments. With 14-year commitment to advancing gas handling safety, Wofly delivers certified reliability through rigorous quality management systems, supporting global clients in mission-critical industries.
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