Backflow Reference Manual - Orion

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3/4", 1", 3", 4"


This is a reduced pressure assembly. Production was originally under the Toro name and began approximately in 1976. Orion bought this design and produced it from 1980-2000. Febco bought the rights to produce this design in 2000 and discontinued it in 2001. All Orion models use a vertical piping configuration where water goes in the bottom and comes back down out of the bottom. The 3/4" and 1" sizes are constructed inside and out of celcon plastic except for the base and top cover which are made of bronze. These sizes also have ball valves built into the base of the unit. The bodies of the 3" and 4" sizes are constructed of a bronze base with stainless steel check canisters with a bronze top cover. Internal parts are plastic and bronze. All check and relief valve seats are replaceable. Check springs on all sizes are contained when the cover is removed. All sizes utilize an internal relief valve sensing line. Relief valves could be removed from the check bodies.


Common repair parts are a very small subset of the 10,000 plus items BAVCO stocks. Please feel free to contact us direct at 800-458-3492 for pricing on items not listed or backflow prevention devices.