CMS Engineered Products LLC Corrosion Management Systems
CMS Engineered Products LLCCorrosion Management Systems
Lined diaphragm valve for corrosive chemical service

Industrial Diaphragm Valves

Fully Tefzel™ and PFA lined valve bodies in stock, including large diameter sizes


Weir style or straightway (excellent for slurries, sludges or viscous fluids) industrial diaphragm valves for your process flow applications. All diaphragm valves feature leak-tight performance, isolation between the bonnet assembly and the process fluid, no stem packing to fail or replace, simple in-line maintenance, low line pressure loss, sealable in either flow direction and drainable (if oriented properly). Industrial diaphragm valves are suitable for use in the chemical, food, paper, steel, mining, power generation and pharmaceutical industries.


  • Available in manual or actuated (on/off or modulating) service


  • Available in flanged (½” to 12” sizes); threaded (screwed), butt or socket weld end connections (½” to 3” sizes)


  • Available in cast iron, ductile iron, 316 stainless steel, Alloy 20 body materials


  • Available unlined or lined with the following:

Tefzel™ (ETFE), PFA, Kynar™ (PVDF), Halar™ (ECTFE), polypropylene (PPL), natural (soft) rubber, hard rubber, Hypalon, Butyl, Neoprene rubber and glass lined.


Pressure ratings up to 200.psi and temperatures up to 340.deg.F (depending on materials of construction, liner material and end connections)

Pneumatic actuated diaphragm valve assy.
Straightway diaphragm valve (cross-section)

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Contact Information

Corporate/shop address:

CMS Engineered Products LLC

1322 W Winona

Unit #3S

Chicago, IL  60640


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Corrosion resistant PTFE

We specialize in PTFE molded expansion joints/flex connectors - many in stock for immediate shipment; custom products available upon request.


Please also review our fully PFA lined ball & butterfly valve products for your corrosive and/or aggressive fluid transfer applications.


Biopharm, pharmaceutical, industrial-grade products available for immediate shipment.

All major credit cards accepted for immediate purchase
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