Technical Specification: Check valves (also known as Non return Valves) are Automatic valves that prevent a return or reverse flow of the process. Check valves are used for two main purposes: First, to prevent back flow, and second, to maintain pressure. Material: Construction: AISI 304, AISI 316 & AISI 316L. Sizes: From 1" to 4" (25mm to 100 mm) Standards: Unions End Connections with SMS/IDF & DIN.. Quality Tests: tests & Pressure Tests.
