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AQUA Check Valves.
Check valves are two-port valves, meaning they have two openings in the body, one for fluid to enter and the other for fluid to leave. There are various types of check valves used in a wide variety of applications. Check valves are often part of common household items. Although they are available in a wide range of sizes and costs, check valves generally are very small, simple, and/or inexpensive. Check valves work automatically and most are not controlled by a person or any external control; accordingly, most do not have any valve handle or stem. The bodies (external shells) of most check valves are made of  metal.

Body       : Carbon Steel ASTM A216 Gr. WCB/Stainless Steel A351 Gr. CF8/CF8M/Ductile
                 Iron ASTM A395/S.G. Iron EN 1563 No. EN-JS1024
Disc        : Stainless Steel ASTM A276 Type 410 / 304 / 316 / ASTM A217 Gr. CA15 /
                 Carbon Steel ASTM A216 Gr. WCB /
                 Stainless Steel ASTM A351 Gr. CF8 / CF8M / Ductile Iron
                 ASTM A395 / S.G. Iron EN1563 No. EN-JS1024
Spring     : Stainless Steel ASTM A240 Type 316 / ASTM A312 Type 316
O-ring      : EPDM , Nitrile , Silicon , Teflon

Hinge pin : Stainless Steel ASTM A276 Type 410 / 304 / 316

Coating
iiiii: Enamel

According to Standards : API 609/ BS5155 / IS 13095 / MSS SP-67

Sizes 1.5"to 48"
Check Valve
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