Full Bore Closed Body Pinch Valve with Replaceable Rubber Sleeve

Available sleeve types include:

Basic type

Extra-thick type

High-pressure type

Conical type

Negative-pressure resistant type

The above provides basic information about the valve sleeve (for more details, please refer to the valve sleeve page).

When the valve reaches the end of its service life, replacing the sleeve restores the pinch valve to an almost like-new condition.

Sleeve replacement diagrams for pinch valves (partial exploded views included).

Automation of the control valve

Pneumatic (double-acting, single-acting, adjusting, manual actuators)

Electric (switch type, adjusting type, linear type)

Manual (handwheel, turbine)

Explosion diagrams of components

Features

Full bore – no flow restrictions

Unobstructed full-port design allows unrestricted media flow, minimizing pressure loss.

Centerline shut-off – extended sleeve life

The valve sleeve is compressed symmetrically along the centerline, reducing wear and extending service life.

Only the sleeve contacts the medium – only one wear part

The valve sleeve is the sole component exposed to the process medium, making it the only replaceable wear part.

Self-cleaning function – clog-free operation

The design inherently provides a self-cleaning action during each cycle, preventing blockages.

Various sleeve materials available – compatible with different media

A wide selection of sleeve materials is available to suit different fluids and operating conditions.

Robust valve body – extended maintenance intervals

The durable metal valve body ensures long-term reliability and reduces maintenance frequency.

The core of a pinch valve is the rubber sleeve, which is the only component in direct contact with the process medium. Its performance largely determines the durability and sealing capability of the valve.

Sectional view of the pinch valve

(Mainly highlighting the 3D model of the valve sleeve)

The valve sleeve can be custom-designed based on the customer's specific operating conditions to achieve optimal performance and longevity.

Technical specifications

Size Range: 15–2000 mm (½"–84")

Pressure Rating: 1–10 MPa. The bursting pressure is twice the operating pressure, ensuring a 1:2 safety factor.

DN15–200: Carbon steel, ductile iron, aluminum alloy, stainless steel (casting process)

DN250–2000: 45# steel, stainless steel (welding process)

Natural rubber (NR), EPDM, chloroprene rubber (CR), nitrile rubber (NBR), butyl rubber, fluororubber (FPM), Hypalon.

Working Status of Pinch Valve

Fully Open: The full-bore elastic valve sleeve provides an unrestricted flow path without gaps or dead zones.

Closing: The sleeve closes along the central axis, minimizing turbulence and abrasion. The valve sleeve forms a smooth, enclosed Venturi shape that enables self-cleaning with each operation.

Fully Closed: Ensures bi-directional zero leakage when fully shut. The internal sleeve design eliminates the need for separate sealing elements, offering inherent safety and maintenance-free operation.