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Rubber lined weir type diaphragm valve

Rubber lined weir type diaphragm valveRubber lined weir type diaphragm valve
Rubber lined weir type diaphragm valve

Rubber lined weir type diaphragm valve Product introduction

 China rubber lined weir type diaphragm valve manufacturer, factory and supplier. Rubber lined weir type diaphragm valve is designed with a raised weir on the fluid flow passage. The weir on the flow path helps to control diaphragm flexing to a minimum while maintaining streamlined and smooth fluid flow. As such, the diaphragm flexing stress is minimized resulting in longer diaphragm life. Rubber lined weir type diaphragm valve operates by moving the diaphragm up to allow fluid flow and when the diaphragm moves downwards it closes.

Rubber lined weir type diaphragm valve manufacturers design this valve for use in various applications from general use to specific industrial use. The use of the Rubber lined weir type diaphragm valve depends on the material used to make different parts such as the diaphragm, seals, and even the valve body. The body is mostly made of metallic materials such as carbon steel, stainless steel, and ductile iron. Such materials are very strong and they make the valve very strong against high pressure and impact damage. 


Rubber lined weir type diaphragm valve specification:

Nominal diameter DN15-600mm

 Nominal pressure 0.6-1.6MPa  

Operating temperature ≤80℃

Drive mode manual, worm gear,pneumatic actuator and electric actuator.

Connection mode internal thread, flange

Manufacturing standards German DIN, American standard API, ANSI, British standard BS, Japanese JIS, JPI, etc

Body material:cast iron, cast steel, carbon steel, WCB, stainless steel, 304, 304L, 316, 316L, etc.

Rubber lined weir type diaphragm valve working principle:

Rubber lined weir type diaphragm valve operates by employing vertical linear motion. This motion is initiated by the application of torque on the handwheel. This torque makes both the handwheel and stem start rotating. The rotary motion is converted to linear motion by threads on the stem. Since the stem is connected to the compressor, as it starts moving it forces the compressor to move either up or down. To open the fluid flow through the valve, the handwheel is turned to the clockwise direction. This forces the diaphragm connected to the compressor upwards which opens a passage for the fluid flow. The fluid then keeps flowing until the handwheel is turned counterclockwise forcing the diaphragm to move downwards and creating a tight seal against the fluid flow. This then prevents any attempts of the fluid to flow through the valve. Weir-type diaphragm valve manufacturers also recommend these valves for use in throttling flow applications. For throttling flow, the handwheel is turned slightly allowing some amount of fluid to flow through the valve.

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