A diaphragm valve is a bi-directional valve which operates by applying an external force to a flexible element, or diaphragm. Diaphragm valves may be used for slurries or in hygienic applications. Learn more about diaphragm valves.

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Logo for Valco Instruments Co. Inc.Valco Instruments Co. Inc. (Houston, TX)
For 30 years Valco valves have been the industry standard in gas chromatography. Models are available with 3, 4, 6, 8, 10, 12, or 14 ports, with 1/32", 1/16", 1/8", or 1/4" fittings, and with bore sizes from 0.25 mm (.010") to 4 mm (.156").
Product(s) by Valco Instruments Co. Inc.
Logo for Asahi / AmericaAsahi / America (Malden, MA)
Diaphragm valves offer many combinations of body materials and elastomeric diaphragm materials. The valve design is abrasion-resistant and non-clogging.
Product(s) by Asahi / America
Logo for Dwyer Instruments, Inc.Dwyer Instruments, Inc. (Michigan City, IN)
Dwyer Instruments is a leading manufacturer in the controls and instrumentation industry, and we continue to grow and serve major markets including, but not limited to HVAC, chemical, food, oil and gas, and pollution control.
Product(s) by Dwyer Instruments, Inc.
 Carten Controls, Inc. (Cheshire, CT)
Our compact Duplex diaphragm valves are intended for bulk gas distribution service where containment, cleanliness and purity are of utmost importance.
 
 Aseptek Pharmaceutical Pipeline Components (Charleville, Ireland)
Aseptek Ltd. are part of the Flotek Group, which provides high quality pipeline & custom fabricated components to the pharmaceutical industry. We stock & distribute, Gemu Sanitary Diaphragm valves, AR Inox aseptic sample valves, Rubberfab sanitary gaskets, clamp components & fittings.
 
 H.O. Trerice Co. (Oak Park, MI)
Trerice air operated diaphragm control valves are actuated by 3-15 PSIG air signal from either a Trerice Model 87700 pneumatic controller or a Trerice Model 87700 pneumatic controller or a Trerice Model TAPAB I-P transducer used in conjunction with a Trerice Model TR863 electronic controller.
 
 Hoke, Inc. (Spartanburg, SC)
The DV1 Series Diaphragm Valves are totally free of springs, bellows, packing, o-rings and lubricants in the process wetted area. Metal-to-metal seals to atmosphere ensure that there is no leaching of undesirable elements into the flow stream, and no leakage of process material into the atmosphere.
 
 GO Regulator (Spartanburg, SC)
GO regulators and valves are designed to fulfill a wide range of applications, controlling pressures while accommodating low to moderate flow rates of many gases and liquids.
 
 Circor Tech (Spartanburg, SC)
The CIRCOR Tech line consists of µMS3® micro modular sample conditioning Systems, D-Series modular diaphragm valves and all related CIRCOR Tech Certified, NeSSI compliant 3rd-party components necessary to build modular sample conditioning systems for process analyzers.
 
 ITT Industries, Engineered Valves (Lancaster, PA)
 
 Jordan Valve (Cincinnati, OH)
 
 Doshi Ion Exchange & Chemical Industries Ltd. (Chennai, India)
 
 Flow-Tek Valves & Controls (Ahmedabad, India)
 
 Dip-Flon Engineering & Co. (Ahmedabad, India)
 
 Wenzhou Caminix Valve Co.,Ltd (Oubei, Yongjia, Wenzhou, Zhejiang, China)
 
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