Hydraulic Valves/

Hydraulic Check Valves

Hydraulic check valves are automatic mechanical devices that allow hydraulic fluid to flow in one direction and prevent flow reversal. They have two openings: an inlet in which the fluid enters and an outlet through which the fluid exits. Because check valves operate automatically, they do not have manual switches or handles that activate the device.

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Fulflo Specialties, Inc.
Blanchester, OH
937-783-2411
Established in 1912, Fulflo Specialties Co. mission was to strive to be a worldwide leader in the manufacturing industry. Today, this dream is a reality as they serve customers around the world with the quality hydraulic check valves they require. For products you can depend on and service you can trust, choose Fulflo Specialties Co. for all of your manufacturing needs.
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The Lee Company
Westbrook, CT
860-399-6281
At The Lee Company, we maintain an international sales force of graduate engineers ready to assist you in solving your fluid flow problems. Lee`s unique capabilities in miniaturization and engineering expertise keep the company at the forefront of fluid flow technology. Contact Lee by phone or website for assistance with your upcoming hydraulic check valves order.
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Westfield Hydraulics Inc.
Pacoima, CA
818-896-6414
Westfield Hydraulics is a customer responsive company with big company manufacturing and management capabilities. Today`s original equipment manufacturers have to know that the products they specify and receive from their suppliers, are of the highest quality and have been thoroughly tested before they arrive. For hydraulic check valves, depend on Westfield.
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Western FluiDyne
Fraser, MI
800-842-5377
At Western FluiDyne, we promise to serve and respect the distributors and resellers of North America and the global market with high quality new and remanufactured pumps, motors, filters and filter elements. Single, double and triple pumps with many shaft options are available. When it comes to your hydraulic check valves needs, we offer your perfect solution.
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DC Hydraulics, Inc.
Canton, MI
734-416-8999
For over a decade, DC Hydraulics has been providing customers with the hydraulic check valves and power systems they need. Their outstanding customer service staff will work closely with you to determine the perfect product for your application. Let us help solve all of your application needs. E-mail us your requests and within 24 hours we will respond.
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Northman Fluid Power
Carol Stream, IL
630-588-8488
Northman Fluid Power was founded in 1971, since then they have grown into a global manufacturer able to cater to all of your hydraulic check valves needs. At Norman, you can count on working with a team that is dedicated to quality and customer service. The company will work closely with you to provide the exact products you need to assist with all of your projects.
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Hydraulic Check Valves

The mechanics of the valve are as follows: the cylindrical valve is attached to the head of the pump on the inlet and outlet lines of a liquid system, be it a small system like that of a car engine or a large system like that of a water treatment plant. A seat inside the cylinder is where the plugging device sits, although there is enough room that the liquid flow from one direction is able to move past it easily. It is when the pressure moves backwards that the plug will seal itself against the check valve walls, which will stop the reverse flow and prevent contamination of the liquid source. Hydraulic check valves are available in several plug designs: swinging disc, ball, plunger and poppet. The swinging disc is attached to a hinge and will open when enough pressurized flow from a single direction is applied. However, if that flow reverses, the swing disc will close and seal. The ball check valve uses a spherical plug that varies in material based on the liquid flow it is controlling. Hydraulic check valves may be made from sturdy, corrosion resistant metals like stainless steel or aluminum, as well as varieties of plastics.

Hydraulic check valves work in conjunction with hydraulic cylinders, pumps and motors. Hydraulic check valves are used in applications that require hydraulic pumps, such as automotive braking systems and construction tools and vehicles. The size and shape of a check valve can vary greatly, depending on its application. This is a very important piece of machinery, because without the ability to control the pressure of fluids as well as the flow of those fluids within a hydraulic process, the system could become unsafe and ineffective. Hydraulic check valves are often working in a system of hydraulic valves with other major styles of valves involved as well. There are also other styles that are very similar to the check valves. For example, hydraulic solenoid valves also work to control uni-directional flow of liquids with a plunger, except they are controlled electrically. Hydraulic proportional valves are specialized to control exactly how much liquid is released through the system. It is also a subcategory of hydraulic control valves.