High Pressure RP backflow Device
High Pressure RP backflow Device
(OP)
I have a situation where I need a Reduce Pressure Principal Backflow Prevention Assembly to meet a maximum operating pressure of 235 psi. The agency standards require a RP not a double check. The problem is most of the common manufacturers all have told me no one makes one rated for that high of pressure. They all top out at 175 psi operating pressure. The situation I have does not allow for a pressure reducing valve. Any one run into this problem before?





RE: High Pressure RP backflow Device
Why can you not use pressure reducing valve? If the higher pressure is a requirement, I would recommend using a pressure reducing valve upstream of the backflow to reduce the pressure, then use a booster pump downstream to bring the pressure back up. Make sure the fittings/parts are rated for the higher pressure.
RE: High Pressure RP backflow Device
RE: High Pressure RP backflow Device
If that doesn't work, then you have to have a tank with an air gap to protect your source and have a booster pump to bring it back up to pressure.
RE: High Pressure RP backflow Device
If the source is not pressurized, boost the initial pressure to your lower pressure needs and then install another booster pump after the BFP for the higher pressure needs.
You don't really give enough details for us to know your exact circumstances, so I'm just throwing it out there and seeing if it will stick.
RE: High Pressure RP backflow Device
RE: High Pressure RP backflow Device
RE: High Pressure RP backflow Device
Why not redundant check valves?
RE: High Pressure RP backflow Device
RE: High Pressure RP backflow Device
Another thought is to have an actuated valve so when the pump turns off, the valve closes and there is no backflow. You could add a check valve in there as well.