Apollo® Valves’ new RP 4A Series reduced pressure principle backflow features two “captured spring” check modules, independently accessible from the top. The check modules are removable and can be replaced or disassembled for normal maintenance. Four top-mounted test cocks also with the RP 4A Series. The relief valve is bottom centered with a separate access cover. The RP 4A Series are part of a new backflow preventer family from Apollo that also includes DC 4A double check assemblies and PVB 4A pressure vacuum breakers. All three new valves share the “captured spring” design and utilize interchangeable check valve modules in the same sizes. Stainless steel handles on the shutoff valves are standard and the all-bronze body of the 4A Series RP resists corrosion for extended service life. Maximum working pressure is 175PSI; operating temperature range is 33 to 140F. All Apollo 4A backflow preventers are manufactured and tested in the USA in ISO 9001:2000 registered facilities.
