Diaphragm Valves/

Zero Static Valves

Zero static valves are multi-port diaphragm valves that serve to promote drainage and eliminate dead-leg, or process stream stagnation. These valves accomplish both measures not only by reducing the number of recesses where materials may be caught, but also providing an exhaust or purge port for materials that do become trapped. Manufacturers also use the third port for sampling or diverting process materials as needed for a given system.

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Burkert Fluid Control Systems
Irvine, CA
800-325-1405
Burkert Fluid Control Systems is a global process valve supplier of high-quality customized fluid control systems and products. Some of our products include hygienic, biotech, process, dual weir, zero static tee valves and more. For additional information, please visit our website. Burkert is one of the world's top companies for measurement, control and regulation technology.
 
Aquasyn California LLC
Chatsworth, CA
818-350-0423
Meeting the needs of the bio-pharmaceutical industry, our industrial diaphragm valves are developed with a bonnet design for high performance & with Tork-Tite® feet which hold our hygienic valves in place with controlled compression. This minimal entrapment feature leads to an extended valve life. Our industrial diaphragm valves meet the needs of the bio-pharmaceutical industry.
 
AP Tech
Napa, CA
707-259-0102
Advanced Pressure Technology (AP Tech), manufactures flow & gas handling devices. Among the products we produce is our springless diaphragm valve used for ultra high purity applications. Our hygienic valves are tailored to meet your specific needs & are backed by reliability & service support. Our gas handling components are used strictly for semiconductor and wafer fabrication.
 
MarcWorks
Nashua, NH
603-889-0300
Sanitary diaphragm valves are our focus here at MarcWorks. Choose from diverting valves, bypass valves, backpressure regulators, 2-way & 3-way valves, mixing valves, and much more. We offer our own pioneered ultra-high purity bellows gas diaphragm biotech valve used in the biopharmaceutical industry. Our sanitary diaphragm valves have warranties to be free of manufacturing defects.
 
PR Valves, LLC
South Houston, TX
713-947-8044
Our company can be summed up in one word - valves. PR Valves, LLC is a stocking distributor for all of your diaphragm valves that you have been seeking. We carry many name brand hard-to-find rare diaphragm valves in cast steel materials and in strainers - duplex and simplex styles. Check out our huge selection of valves - common, specialized, unique, or we can modify one for you.
 
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Industry Information

Zero Static Valves

Zero static valves, which are diaphragm valves, are capable of handling liquid, gaseous and even semi-solid process streams without the risk of leaking or stagnation. Alternative valve designs that use balls, reciprocating rods or flanges result in several exposed recesses which, without a zero static mechanism easily retain materials. If not promptly removed, process stream stagnation can quickly lead to bacterial growth which may corrode piping and contaminate the entire process stream. Many industries such as biopharmaceutical, agriculture, irrigation, plumbing, water treatment, chemical and food processing, pulp and paper, mining and energy production utilize these valves in their daily operations to ensure both equipment functionality and material purity. These valves can be installed inline or perpendicular to the pipeline by using weir valves or seat valves respectively. Hygienic valves, biotech valves and sanitary diaphragm valves utilize zero static valve components to further ensure aseptic operations.

With such a broad range of applications, it is important to consider zero static valves with regards for their intended use. Process streams commonly handled by these valves include silicones, adhesives, oils, chemicals, water, food, cleaners, sanitizers, coatings, fuel and more. Valve components must be made out of chemically compatible materials in order to promote product longevity and efficiency. Durable metals such as brass, steel and stainless steel as well as PVC, CPVC, polypropylene and other plastic materials are used to construct valve components. The diaphragm itself may be made of elasticized metals, though corrosion resistant polymers are more frequently used. The valve is installed directly behind the diaphragm and in close proximity to the main line. Compact models are especially popular as they can be installed even into flow lines or cisterns with complex geometries and limited space. As zero static valves are commonly referred to as point of use or downstream purge valves, it is important to be aware of product specifications in order to ensure the optimal valve for a given applications. Operating temperatures, production methods, number and size of ports, overall dimensions, flow compensation and actuator type in addition to the material concerns mentioned above should be scrutinized when selecting a zero static valve.