MSS SP-71-1997

MSS SP-71-1997 Grey Iron Swing Check Valves, Flanged and Threaded Ends
standard by Manufacturers Standardization Society, 01/01/1997

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This standard practice covers gray iron swing check valves with flanged and threaded ends for general purpose service in essentially horizontal lines. The use of swing check valves in steeply inclined of vertical lines requirest special consideration.