Pneumatic diaphragm/piston shut-off valve
The Pneumatic Diaphragm/Piston Shut-Off Valve is a high-performance automatic isolation valve designed for rapid opening and closing control in industrial pipeline systems. Available with both pneumatic diaphragm actuators and pneumatic piston actuators, the valve provides reliable shut-off performance, fast response, and excellent operational stability.
The valve features a compact structure, high sealing reliability, and strong adaptability to various working conditions. The pneumatic actuator enables remote automatic control, emergency shut-off, and safe isolation of process pipelines. It is suitable for controlling steam, gas, water, oil, and chemical media in applications requiring frequent operation and high safety standards.
With durable construction, low maintenance requirements, and flexible actuator configurations, the Pneumatic Diaphragm/Piston Shut-Off Valve is an ideal solution for industrial automation and safety protection systems.
Pneumatic diaphragm/piston shut-off valve
We provide professional OEM manufacturing and customized valve solutions according to customer requirements, including:
Our Pneumatic Diaphragm/Piston Shut-Off Valves are manufactured under strict quality management systems and comply with international valve industry standards. Available certifications include:
We provide reliable shut-off valve solutions with advanced manufacturing technology, strict quality control, and professional OEM customization services.
Parameter Specifications
| Parameter | Specification |
|---|---|
| Product Name | Pneumatic Diaphragm/Piston Shut-Off Valve |
| Valve Type | Pneumatic Shut-Off Valve / Isolation Valve |
| Actuator Type | Pneumatic Diaphragm Actuator / Pneumatic Piston Actuator |
| Valve Structure | Globe Type / Angle Type / Straight Type (Optional) |
| Nominal Size | DN15 ~ DN500 (Customized Available) |
| Pressure Rating | PN16 ~ PN420 / Class 150 ~ Class 2500 |
| Body Material | Carbon Steel, Stainless Steel, Alloy Steel, Cast Steel |
| Trim Material | Stainless Steel, Hardened Alloy, Tungsten Carbide Coating |
| Connection Type | Flanged, Threaded, Butt Welded, Customized |
| Applicable Medium | Water, Steam, Gas, Oil, Chemical Fluids |
| Working Temperature | -196℃ ~ 600℃ (Customized Available) |
| Actuator Supply Pressure | 0.3 ~ 0.7 MPa |
| Control Mode | Pneumatic On/Off Control |
| Valve Operation | Normally Closed / Normally Open |
| Shut-Off Time | Fast Response Design Available |
| Leakage Class | ANSI Class IV / V / VI |
| Sealing Type | Soft Seal / Metal Seal |
| Control Accessories | Solenoid Valve, Limit Switch, Position Sensor Optional |
| Explosion Protection | Explosion-Proof Actuator Available |
| Anti-Corrosion Treatment | Special Coating Available |
| Fail-Safe Function | Fail Close / Fail Open / Fail in Place |
| Applicable Standards | IEC, ANSI, API, DIN, GB Standards |
| Inspection Standard | Pressure Test, Leakage Test, Functional Test |
Industry Applications
The Pneumatic Diaphragm/Piston Shut-Off Valve is widely used in industries requiring fast, safe, and reliable pipeline isolation.
Material customization plan
Customized 316L stainless steel valves forGerman chemical enterprises. Resistant tostrong corrosion, suitable for their acidicmedium transportation systems, with aservice life extended to over 8 years.
Structural optimization design
For the Saudi desert project, the valve stemsealing structure was changed to a doublebellows design to address the leakage issuein the high-temperature and dustyenvironment, and it was highly recognizedby the customers.
Interface standard adaptation
Customized API 600 standard valves for acertain company in the United States. Theflange size is fully compatible with ANSIB16.5, ensuring zero error during on-siteinstallation and reducing the constructionperiod by 30%.
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