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Plastic Check Valve Manufacturers and Suppliers

IQS Directory is a top industrial directory listing of leading industrial plastic check valve manufacturers and suppliers. Access our comprehensive index to review and source plastic check valve manufacturers with preview ads and detailed product descriptions. These plastic check valve companies can design, engineer and manufacture plastic check valves to your specifications and application need. A quick and easy to use request for quote form is provided for you to contact these plastic check valve manufacturers and suppliers. Each company has detailed profile information, locations, phone number, website links, product videos and product information defined. Read customer reviews and product specific news articles. We are the right resource for your information requirement whether its for a manufacturer of plastic coolant check valves, plastic check flow valve, pvc foot check valves.

  • W. Des Moines, IA 515-224-2301

    Our check valves are manufactured with the customer in mind. We believe in offering superior products and services every time. No matter whether you are looking for small or large valves, we can meet your every needs. It is our goal to offer excellent prices and service to each customer. Contact us to learn more today!

  • Fenton, MO 800-233-1477

    Our team at Control Devices believes that all of our customers should receive products that exceed their expecations. That’s why we design and produce our check valves using the highest quality materials. We will work with each customer to help find a lasting solution. Our company is ISO 9001:2015 certified. Contact Control Devices today to learn more!

  • Maplewood, MN 651-330-3437

    When it comes to ball valves, you can count on Valve Check to manufacture ball valves and relief valves! Our valves can operate up to 10,000 PSI, and can be made from such materials as brass, aluminum, steel and stainless steel. Many standards and configurations available! For more information, call us today! We look forward to working with you!

  • Exeter, CA 800-331-0808

    We have been offering irrigation solutions since 1912. Waterman serves the wastewater industry by manufacturing control gates, butterfly valves, stainless steel butterfly valves, 3" - 12" round butterfly valves, 4" - 12" wafer butterfly valves and other irrigation equipment. For more information, contact GNI Waterman and a representative will be happy to assist you.

  • Butler, NJ 973-838-6500

    Manufacturing standard or custom check valves, pressure relief valves, needle valves, control valves, pressure regulators and instrument-quality tube fittings plus other flow and pressure control products is our business. Generant is ISO 9001:2000 certified. We have been in business for 75+ years.

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businessIndustry Information

Plastic Check Valves

Plastic check valves are unidirectional flow control devices made out of organic, synthetic or processed polymers. The purpose of these mechanisms, like all check valves, is to eliminate the potential damage that could be caused by backflow if left unchecked. Back pressure or reverse flow can result in mechanical failure, product contamination, pressure surges and flooding.

A plastic check valve, like all check valves, prevents backflow by allowing process streams such as water, corrosives, compressed air, liquid metal, hydraulic fluid, fuel, gasoline, syrup, acids, adhesives, slurry and sludge, to name a few, to flow freely in a downstream direction while simultaneously sealing itself should the direction of flow reverse. Plastic check valves provide this security with relatively simple devices. The body of the valve is a molded, extruded or die cast cylindrical element that is placed midstream in the plumbing. Because they require no external activation or actuation mechanism, these non return valves are easily installed into pre-existing pipeline configurations. The body holds in place a ring-like plastic element known as the seat. This extends from the inner walls toward the center-line of the pipe but does not fully close. A plugging mechanism, such as a piston or ball rests in the seat. Another plugging device is a swinging disk. When pressure is great enough, and going in the desired direction, the stopper is lifted away from the seat of the valve opening the gap to allow process stream to flow freely downstream. Reverse flow inversely pushes the plug back into the hole, creating an air tight seal that will not be opened again until forward flow pressure is greater than the back pressure.


As aforementioned, plastic check valves come into frequent contact with a number of different process streams. In order to provide reliable stream control, it is important to select a valve material that is chemically compatible with the flow composition. A number of different plastics are therefore available to suit check valve needs under any circumstances. PVC check valves are common as they provide good flexibility, smooth surfaces and are nontoxic. Polypropylene is also used and is similar to PVC but with additional benefits of resistance to UV, weathering and ozone exposure. PTFE is suited for use with highly corrosive substances while CPVC maintains integrity in high heat applications such as boiling water or molten metal transfer. Each of these acetal polymers offers high fatigue resistance and lubricity which help to increase product longevity. While metals may also be used in valve design, plastics are easily fabricated into precise shapes and offer many of the same qualities as metals with lower overhead cost. In addition to material considerations, manufacturers should consider plastic check valve dimensions, pressure ratings, thermal capabilities, connection types and curing technology, all of which can have a significant impact on the plastic check valve performance.

 

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