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Uncontrollable reduced pressure zone backflow preventer. CA type (UNI EN 1717). Protection from category 1, 2, 3 fluids (UNI EN 1717). 3/4"F threaded union connections (ISO 228 - from EN 14367 standard). 1/2"F drain. UNI EN 12165 CW617N brass body. Internal filter in stainless steel. Internal stems in UNI EN 12164 CW614N brass. EPDM gaskets. Stainless steel spring. Phosphor bronze snap ring. Temperature range 5÷90 °C. Maximum working pressure 10 bar. Approved ASSE 1012 - CSA. EN 14367 compliant.