Short-length reduced-pressure backflow preventor

摘要: A double check valve reduced pressure backflow preventor assembly is configured to have a relatively small length, volume and/or weight. The defines parallel, preferably coaxial, inlet (112) and outlet (128) directions. In one aspect, axis (312) of first the (314) second valves are at an angle, 90 degrees, in-line (110). relief (134) positioned spaced from First (718a) stop (718b) enclosed in same integral, unitary housing (142) which encloses and, preferably, some or all (134). shutoff (718a, 718b) along