Check Valve

View: 344 - Date Submitted: 24/12/2019

Check valves are found in almost every industrial application acting as one-way or non-return valves. Check valves are simple devices, perform a vital function by preventing reverse flows, therefore preventing damage and ensuring efficient operations. For example, reverse flow can result in water hammer. This phenomenon can see repeated extreme pressure surges in connected pipework, valves and pumps that may fatally damage or rupture the system and its pipework. Even if a failure does not occur immediately the repeated impact of water hammer can promote fatigue that may also ultimately result in a loss of system integrity.

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Content

Product Description

Category: Check Valve

Size Range	NPS 2"-48"(DN50-DN1200)
Pressure Rating	ASME Class 150-1500(PN16-PN250)
End Connection	Wafer, Lug, Double flanged
Body Material	Carbon steel, Stainless steel, Alloy steel, Duplex stainless steel

Application: Petrochemical, Power plant, Refining, Oil & Gas, Metallurgy etc.

API 594 dual plate check valve is widely used in the flow control industry. Due to its short face-to-face dimension, it requires smaller installation space and has a lower weight, which offers competitive life cycles costs compared with the swing check valve.

Featuring a single inlet and outlet, check valves are operated by a pressure differential. Above a certain upstream pressure, the valve will automatically open without requiring any other intervention. Known as the cracking pressure, this minimum operational pressure is one of the key characteristics specified in all check valves. Chemicals, pulp and paper, food processing, water and wastewater treatment, industrial, marine and mining, pumps, pipelines, power generation and HVAC are among the many fluid flow and pumping applications that feature check valves.

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