Diaphragm Valve
A diaphragm valve is a linear motion valve that uses a flexible diaphragm to control fluid flow.The diaphragm is connected to a compressor mechanism,which presses it against the valve body seat to shut off flow,or lifts it to allow flow.Its...
A diaphragm valve is a linear motion valve that uses a flexible diaphragm to control fluid flow.The diaphragm is connected to a compressor mechanism,which presses it against the valve body seat to shut off flow,or lifts it to allow flow.Its unique design isolates the working mechanism from the medium,making it ideal for corrosive,abrasive,sanitary,and hazardous fluids.
Key Features
Leak‑tight sealing:The diaphragm provides a bubble‑tight shutoff and prevents cross‑contamination.
Corrosion resistance:Suitable for strong acids,alkalis,slurries,and viscous media.
No packing gland:No stem leakage,no contamination to the pipeline.
Easy maintenance:Simple structure,diaphragm can be replaced without removing the valve from the line.
Sanitary&hygienic:Smooth flow path,no dead space,widely used in food,beverage,pharmaceutical industries.
Good throttling performance:Can be used for regulating flow as well as on‑off service.
Main Materials
Body:Ductile iron,cast steel,stainless steel(304,316L),plastic(UPVC,CPVC,PVDF)
Diaphragm:EPDM,PTFE,FKM,rubber reinforced with fabric
Bonnet:Cast iron,stainless steel,plastic
Common Standards
API 607,BS 5156,ANSI B16.104,DIN 3512,JIS B2071,GB/T 12239
Applications
Chemical processing:acids,alkalis,salts,corrosive liquids
Pharmaceutical&biotechnology:sterile processes,pure water systems
Food&beverage:dairy,brewing,juice,edible oil
Water treatment:sewage,sludge,chemical dosing
Mining&pulp&paper:abrasive slurries
Semiconductor&electronics:high-purity fluids
