{"id":3469,"date":"2022-07-02T12:26:51","date_gmt":"2022-07-02T12:26:51","guid":{"rendered":"http:\/\/sinovalveco.com\/?p=3469"},"modified":"2026-03-10T08:13:22","modified_gmt":"2026-03-10T08:13:22","slug":"prv-valve","status":"publish","type":"post","link":"https:\/\/ntgdvalve.com\/pt\/prv-valve\/","title":{"rendered":"V\u00e1lvula PRV industrial: Princ\u00edpio de funcionamento, tipos de opera\u00e7\u00e3o direta versus piloto e guia de sele\u00e7\u00e3o"},"content":{"rendered":"

By Bruce Tseng, Valve Engineer at NTGD Valve<\/strong>
Technically reviewed by NTGD Engineering Team<\/strong>
Last updated: March 2026<\/strong><\/p>\n

A pressure reducing valve<\/a> (PRV)<\/strong> is used to reduce a higher and often fluctuating upstream pressure to a lower, controlled downstream pressure. In industrial piping systems, this function is essential for protecting downstream equipment, improving process stability, and maintaining safe operating conditions.<\/p>\n

If you are selecting a PRV valve for steam, water, compressed air, or industrial process service<\/strong>, the key question is not simply what a PRV is. The more important question is whether the valve is suitable for your pressure range, flow variation, control accuracy requirement, medium, and installation conditions<\/strong>.<\/p>\n

This guide explains how a PRV valve works, how direct-acting<\/strong> and pilot-operated<\/strong> designs differ, how a PRV compares with a pressure relief valve<\/strong>, what data is needed for proper selection, and how to troubleshoot common pressure control problems in real service.<\/p>\n

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