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Sanitary Diaphragm Valves

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Sanitary diaphragm valves are carefully regulated to ensure clean processing of materials in industries such as dairy, food and chemical processing, medical, pharmaceutical, agricultural, brewing, beverage production, cosmetics, semiconductor and bio-processing. The Food and Drug Administration (FDA) is one of several regulatory bodies that require many of these applications to employ valves which are drainable, cleanable and able to be sterilized. Read More…

Sanitary Diaphragm Valves Sanitary diaphragm valves are process flow regulation devices constructed of sterile materials and designed to create an aseptic environment for liquid, gaseous and semi-solid material flows. Like all diaphragm valves, these mechanisms use a membrane made of elastomeric polymers to stop, start and modify the flow and pressure of process streams for a number industrial and commercial manufacturing applications.
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Leading Manufacturers

Irvine, CA  |  800-325-1405

Burkert Fluid Control Systems is a global process supplier of high-quality customized fluid control systems and products, including diaphragm valves.

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Burkert Fluid Control Systems $$$

Irvine, CA  |  949-458-3731

We make a wide range of products that are engineered solutions for you! Our diaphragm valves are number one in the industry when it comes to quality and production time.

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International Polymer Solutions $$$

Arlington Heights, IL  |  800-733-1344

Yamada® Corporation has been a leading producer of fluid handling products for over 60 years. As a leader in pneumatic pumping technology, Yamada® is known in industries worldwide for its innovative products, superior quality and unmatched reliability. Yamada’s ISO 9001 certification ensures quality procedures for manufacturing bellows pumps, dampeners and more.

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Yamada America, Inc. $$$

Wilmington, MA  |  800-282-8823

Watson-Marlow Fluid Technology is a leader in the diaphragm valve industry. Our expert team works side by side with our customers to ensure that our products fit their needs. For more information about our diaphragm valves, visit our website or give us a call today!

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Watson-Marlow Fluid Technology Group $$$

Lancaster, PA  |  717-509-2200

We manufacture a variety of butterfly control valves—stainless steel, lug, wafer butterfly valves, standard, custom, shut-off and more. ITT knows the various chemical, fluid and gas processes and engineers products accordingly. Our brand names include Fabri-Valve®, Richter™, Pure-Flo®.

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ITT Industries, Engineered Valves $$$
placeholder image Burkert Fluid Control Systems International Polymer Solutions Yamada America, Inc. Watson-Marlow Fluid Technology Group ITT Industries, Engineered Valves

Diaphragm valves offer each of these features in addition to being one of the most leak resistant valve models available. Zero static valves are often employed with sanitary applications as well to eliminate dead space, or valve recesses in which materials may accumulate and stagnate leading to potentially damaging and dangerous bacterial growth and contamination. Although seat valves can be sanitized, weir valves are more often used in hygienic valve applications as they ensure minimal product contact of surfaces, reduced hold-up volume and minimal entrapment areas.

The basic operating process of a diaphragm valve is fairly simple. The body of the valve, a cylindrical or spherical device is attached to the necessary pipeline or cistern. This component houses the actuating device and any connected hardware. Pneumatic, hydraulic, electrical and manual actuation may be used and so specific designs may vary significantly. The diaphragm is located in the center of the body, but in normal position is flush against the wall so as not to impede flow.

When the membrane is engaged, however, the diaphragm is stretched toward the opposite surface of the body to a specific depth. To completely halt the process stream, the membrane must cover the entire diameter, while slowing the flow means only extending the diaphragm partially. When the actuator relieves the pressure the diaphragm returns to its relaxed position and maximum flow resumes. As the diaphragm and the body of the valve come into contact with the process flow, they must be made of sterile materials in order for the valve to qualify as a sanitary diaphragm valve.

Common materials for each include stainless steel, copper, bronze, cast iron, PVC and CPVC among others. Forged, molded or die cast, each component is designed to prevent any foreign matter from collecting in the interior recesses of the valve. While the valve exterior is not strictly regulated, the internal surface which encounters the sterile materials should be smooth with no burrs that might dislodge in the process stream. Additional considerations for sanitary diaphragm valves include chemical resistance, clean room assembly, operational temperatures and pressures, diameter and overall dimensions.

Sanitary Diaphragm Valve Informational Video

 
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