{"id":4732,"date":"2024-07-15T12:27:39","date_gmt":"2024-07-15T12:27:39","guid":{"rendered":"https:\/\/sinovalveco.com\/product\/piston-check-valve\/"},"modified":"2026-04-18T08:33:15","modified_gmt":"2026-04-18T08:33:15","slug":"piston-check-valve","status":"publish","type":"product","link":"https:\/\/ntgdvalve.com\/fr\/piston-check-valve\/","title":{"rendered":"Clapet anti-retour \u00e0 piston"},"content":{"rendered":"
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Last Updated:<\/strong> March 2026
Author:<\/strong> NTGD Valve Engineering Team<\/p>\n

This article is maintained by NTGD\u2019s engineering team and is regularly updated based on API standards, project experience, and real field application feedback. The information provided focuses on practical selection guidance, including Cv sizing, pressure-temperature considerations, installation practices, and performance behavior in steam, pump, and high-pressure systems.<\/p>\n

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A piston check valve is typically selected for piping systems where reverse flow could damage pumps, boilers, or other critical equipment. Compared with a swing check valve<\/a>, it uses guided linear disc movement and more controlled closure, making it a practical choice for high-pressure, high-temperature, and steam service where sealing stability matters.<\/p>\n

NTGD piston check valves are available in NPS 1\/2 to NPS 4<\/strong> and Class 150 to 2500<\/strong>, and are designed to API 602<\/strong> and tested to API 598<\/strong>. Depending on valve size, pressure class, and trim configuration, NTGD piston check valves can provide a wide Cv range for engineering selection, while guided piston closure helps reduce slam and water hammer risk in demanding services such as steam and boiler feedwater.<\/p>\n

This page is designed as a practical selection resource. It covers Cv and sizing guidance, working principle, technical specifications, pressure-temperature reference, piston vs swing comparison, installation notes, troubleshooting, testing, and RFQ support<\/strong> so engineers and buyers can make a more confident selection decision.<\/p>\n

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