SVR Global is a prominent Check Valve Manufacturer in USA. We have a broad product line of industrial valves to meet customer requirements. Our products in this diverse market provide another example of our customer-driven, problem-solving capabilities.
What is a Check Valve?
A Check valve is classed as a self-actuated, straight-line valve. An interesting feature of this valve is the possibility to set the valve opening with a specific pressure value, to ensure that the fluid reaches users, with a certain pressure value.
A Check valve is a mechanical device that allows only unidirectional fluid flow. It is also called 'One-way valve', 'Clack valve' or 'Non-return valve' since it only allows media to flow in one direction.
It has two media ports, one inlet and one output. Usually, a check valve is formed by a shutter, a spring and a gasket.
How does a Check Valve work?
The operating principle is very simple: as soon as the fluid pumped into the pipe reaches a pressure value that overcomes the force of the spring, the shutter will open and it will let the fluid flow through. The higher the fluid pressure, the bigger the shutter opening will be. When the pressure value falls below the value that counteracts the force of the spring, the shutter closes, preventing any backflow.
Applications of a Check Valve:
Virtually every plumbing or fluid transfer application imaginable, be it industrial, commercial, or domestic, employs check valves. Check valves are often utilized for one of four reasons in a number of applications because of how they work:
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To prevent backflow damage to downstream equipment
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To avoid contamination as a result of reverse flow
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To avoid siphoning
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To maintain a vacuum seal
Advantages of a Check Valve:
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Backflow prevention
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Capability to withstanding both high and low pressures
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Can be utilized horizontally and vertically
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Used as a backup and safety system
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Self-actuated
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Fast-acting
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Reduce downtime and production losses.
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Avoid water hammer.
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Reduce unexpected valve failure.
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Maintenance expenditures are reduced.
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Adaptable to changing flow conditions
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Operating without the use of electricity
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Minimal pressure drop
Disadvantages of a Check Valve:
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Non-operational in pulsating system
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The closing part may bang, resulting in seat damage and wear.
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Work in a completely confined environment.
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Impossible to tell whether they are open or closed.
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Internal components cannot be examined.
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Occasionally, discs become caught in the open position.
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Slamming discs are noisy
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Hammering with water
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Problems with reverse flow
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Tapping & Chattering
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Disc banging in the open position, resulting in damage and wear.
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Cannot be operated with fluid containing solid particles as they may accumulate between the seat and disc and stop the disc from closing.
Industries that use Check Valves:
Check valves are used in sewage, water treatment, medical, chemical processing, power generation, hydropower, petrochemical, and food, and beverage processing industries for effective backflow prevention. Offshore and onshore oil and gas production, gas plants, LNG, liquid gases, refineries, petrochemical, chemical, fertilizer, terminals, pipelines, power, desalination, water, and other industries all employ check valves.
Types of Check Valves-
Also known as Silent Check Valve, a Dual Plate Check Valve is an automatic mechanical non-return valve, which opens with a forward flow and shut to a reversal inflow. It consists of 2 discs attached to the valve body by a pin and operated by the action of springs, which immediately start closing the valve when the fluid stops.
Forging steel check valves are compact, sturdy, and ideal for high-pressure and high-temperature applications. These are non-return valves that only operate in one direction. The body is built of forged steel and is available in two-port configurations: full and standard. A forged steel lid sits atop the body.
Swing check valves use a swinging disc on a hinge to regulate the flow of a liquid, gas, or solid stream in one direction while preventing backflow from contaminating the source fluid. In other words, like all check valves, the swing valve is a non-return valve.
Swing check valves are the most common type of large check valve, and a typical example is a toilet flushing valve that rises and lowers. Swing valves normally require some type of physical motion to activate them, therefore manual twisting of the handle is a common subject. In some internal pipe systems, however, a spring check valve is integrated with the swing valve to eliminate the need for human intervention.
Description of Check Valves:
SVR Global is a prominent Check Valve Manufacturer in USA that offers check valves having the following features-
Class:
150- 2500; PN10- PN450
Ends:
Threaded, Buttweld, Socketweld
Material:
Cast Iron and Cast Steel [LF2, A216, WCB, WCC, LCB, LCC, WC6, WC9], Ductile Iron, Stainless Steel [SS316, SS304, SS316L, SS904L, CF8, CF8M, F304, F316, F31L, F91], Duplex and Super duplex Steel [F51, F53,F55] Forged Steel [A105, A105N, F11, F22, F304, F316, F91], Alloy20, Hastelloy ALBR.
Size:
1/2” to 80”
Visit us to know more about various valves provided by SVR Global - https://svrglobal.net/products/check-valve/
