Imported lined diaphragm valve | fully lined diaphragm valve

The imported diaphragm valve is a special type of valve with a cut-off function. Its opening and closing parts are composed of a steel valve disc and a diaphragm made of soft materials (rubber and fluoroplastic composite), and separate the valve body cavity to achieve The purpose of cutting off the medium in the pipe. Basic structure
The composite diaphragm separates the lower cavity of the valve body from the inner cavity of the valve cover, and forms a direct flow channel with it, so that the valve stem, valve disc and other internal parts on the upper part of the diaphragm are completely isolated from the medium, eliminating the need for packing seals Structure, internal and external leakage of media can be avoided at the same time.
. Membrane parts used as actuators are prone to fatigue fracture due to frequent opening and closing. They should be replaced regularly depending on the working conditions and medium characteristics.
Please refer to the plastic lining performance table of valves and pipeline accessories for the anti-corrosion performance and recommended operating temperature of plastics.
Rubber-lined diaphragm valve driving method
Manual rubber-lined diaphragm valve, pneumatic rubber-lined diaphragm valve (normally open or normally closed), electric rubber-lined diaphragm valve
Rubber-lined diaphragm valve main component materials Table
Serial number

Part name

Gray cast iron

Cast steel

Stainless acid-resistant cast steel< br/>
Ultra-low carbon stainless acid-resistant cast steel















Valve body/bonnet















Disc /Stem















Lining/Seat

,,(soluble,



Diaphragm

(Neoprene) (soluble)/(ethylene propylene rubber)



Bracket









Stem nut









Fastening bolts





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Nut









Handwheel








Rubber lined diaphragm Main appearance and connection dimensions of the valve


Nominal passage






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