The normally closed pneumatic pipe clamp valve is a new type of valve improved on the basis of manual pipe clamp valve to meet the special working conditions of customers. It is composed of upper and lower cast iron, cast steel valve body, rubber pipe sleeve, large and small valve stems, gate plates, upper and lower guide columns, pneumatic devices and other parts. The driving device can also be selected according to the needs. Pneumatic pipe clamp valves are widely used in chemical industry, petroleum industry, power sector, metallurgical industry, sewage treatment and other fields.

Working principle

When the control medium is not input, the cavity between the rubber sleeve and the valve body is connected to the atmosphere, and the rubber sleeve is under outward tension due to fluid pressure. Due to the angled arrangement of reinforced fabric layers inside the sleeve, the axial and radial pressures of the sleeve are balanced, so the length and diameter of the sleeve will not change due to fluid pressure. When the control medium enters the cavity between the pipe sleeve and the valve body, the pipe sleeve deforms and intercepts under the pressure of the medium.

No leakage: No sealing point, completely isolated control medium space and valve channel, no internal or external leakage will occur.

Same diameter pipe valve: With a novel and simple structure, the rubber sleeve has the same inner diameter as the pipeline, resulting in minimal local resistance loss.

Containing impurities for closure: By relying on the deformation of the rubber sleeve to achieve opening and closing, even if the fluid contains solid particles or fiber impurities, it will not block and can be completely and quickly wrapped and closed.

Wide applicability: With a simple structure and only three components, it can replace large and complex valves, especially suitable for occasions with explosion-proof requirements.

Efficient and long-lasting: The unique rubber sleeve with reinforced curtain fabric can withstand high-frequency opening and closing operations, resist acid, alkali, and chemical media, and has a long service life.

Easy installation: The valve installation is non directional, and there is no need to clean the pipeline when using it. Once the rubber sleeve is damaged, it can be easily and quickly replaced.

Convenient control: It can achieve on-site or remote automated operation control as needed.

1. Scope of application: Chemical industry, power generation, alkali plant, mineral processing, cement, coal preparation, non-metallic and other industries, can quickly control pipeline concentration, sand particle flow rate and cut-off.

2. Media used: pulp, sewage, slag, coal slag, sediment, etc.

3. Applicable temperature: -30-85, higher temperatures can be customized separately.

4. Nominal pressure:- 0.3-2.5Mpa (order instructions).

5. Flange execution standards: (JB/80-91)。