Check Valve
A self-actuating valve that allows flow in one direction only, preventing backflow. Types include swing check (hinged disc), dual-plate (two spring-loaded half-discs, wafer pattern), tilting-disc, and piston-lift. Used after pumps, compressors, and in any line where backflow would damage equipment.
What is Check Valve?
A self-actuating valve that allows flow in one direction only, preventing backflow. Types include swing check (hinged disc), dual-plate (two spring-loaded half-discs, wafer pattern), tilting-disc, and piston-lift
Vajra Industrial Solutions is an engineering-driven industrial valve manufacturer and supplier. Concepts such as check valve inform how we select, manufacture, and document valves for industrial service.
Related Terms
Related Products
Applicable Standards
Specification for Pipeline and Piping Valves
API 6D is the most widely cited standard for pipeline and piping valves in the oil and gas industry.
Check Valves: Flanged, Lug, Wafer, and Butt-Welding
API 594 is the design and testing standard for flanged, lug, wafer, and butt-welding check valves including swing check, dual plate (double door), and tilting disc check valves.
Frequently Asked Questions
What is a Check Valve?
A self-actuating valve that allows flow in one direction only, preventing backflow. Types include swing check (hinged disc), dual-plate (two spring-loaded half-discs, wafer pattern), tilting-disc, and piston-lift. Used after pumps, compressors, and in any line where backflow would damage equipment.
What is a Check Valve used for?
Check Valves are used in industrial piping systems for on-off isolation, flow control, or backflow prevention depending on the valve type. They are selected based on the process fluid, operating pressure and temperature, required shutoff class, and pipeline size. Vajra Industrial Solutions supplies Check Valves certified to API 6D, ASME B16.34, and other applicable standards.
How do I select the right Check Valve for my application?
Selecting the correct Check Valve requires specifying: (1) nominal pipe size (NPS/DN), (2) pressure class per ASME B16.34, (3) body and trim material based on fluid compatibility and temperature, (4) end connections (flanged RF/RTJ, butt-weld, socket-weld, or threaded), (5) required certifications (API 6D, ISO 9001, fire-safe API 607). Contact Vajra Industrial Solutions at sales@vajravyuh.com with your specifications for a quote.
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