Backflow Preventor AND Pressure Reducing Valve???

[tlorenz (Terry J. Lorenz)]

Inspecting a boiler today and saw a pressure reducing valve, but did not see a backflow preventor. The pressure reducing valve had an arrow on the bottom pointing one direction, making me think that this was a combo device. Can you all look at the pic and help me out with this one?

Thanks!

Terry Lorenz
Gallatin Valley Home Inspections, Inc.
Bozeman, Montana

[tneumann]

Never seen a combo device such as that…any numbers or names on it besides something that reminds me of mexican food?

The arrow is always present on PRV valves…otherwise they won’t work properly…

As for it being a backflow device as well…not sure, but some numbers and manufacturer symbols might help…