3-A Sanitary Check Valve

Available from Check-All Valve Mfg.

The 3-A Sanitary Check Valve is an all 316/316L stainless steel check valve with a standard 32 Ra or better finish, (consult factory for finer finish availability) for use in new or existing sanitary systems. The 3S design seals on the ID of sanitary ferrules with 3-A specified materials (standard is EPDM). The valve seals inside fittings such as Alfa Laval Inc. Bevel Seat, and Tri-Clamp®, Waukesha Cherry-Burrell® Q-Line, and S-Line and others with ID dimensions equal to the "F" dimensions listed in the Sizes & Dimensions. The valve is designed to be easily disassembled for cleaning and spare parts are available.Note: USP Class VI o-rings can be supplied with certification.
Flange Insert valves are designed to fit between two mating ANSI flanges. The “Spring Housing” designated by the “A” dimension is designed to be inserted into the upstream pipe, thereby centering it in the pipe. Therefore, there must be clearance between the spring housing and the pipe or flange. Generally speaking, the FIV Class 150 and 300 valves (F1) are designed for standard schedule pipe or Class 150 or 300 flanges, and the FIV Class 600 (F6) valves are designed for schedule 80 pipe or Class 600 flanges.

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