The supply pressure is where the water enters the backflow preventer. It is the inlet pressure or the pressure at TC#1. Supply pressure is typically higher than the outlet pressure. Backpressure is the exception.
I know this video is old but I'm going to take a shot. Valves are banging in my rpz whenever my makeup water pump starts and stops like there's air trapped inside. How can I fix this?
Mikey - water hammer is the issues. can be corrected with the installation of a soft seated check valve downstream of the backflow prevention assembly.
The "Z" stands for the area between the first and second check valve "the Zone" - Some manufacturers refer to this type of backflow preventer as a "Reduced Pressure Zone Assembly" while other manufacturers refer to them as a "Reduced Pressure Principle Assembly"
Awesome video, thanks for putting this together!
Thanks for this detailed video. Good job! 👏🏼
Ingenious design
Thanks a lot
Hello. Which one is the supply pressure? I don't quite understand that part.
The supply pressure is where the water enters the backflow preventer. It is the inlet pressure or the pressure at TC#1. Supply pressure is typically higher than the outlet pressure. Backpressure is the exception.
I know this video is old but I'm going to take a shot. Valves are banging in my rpz whenever my makeup water pump starts and stops like there's air trapped inside. How can I fix this?
Mikey - water hammer is the issues. can be corrected with the installation of a soft seated check valve downstream of the backflow prevention assembly.
Or get a plumber in
@@JimmyBackflow thanks man! I had a plumber come in and try to change the whole RPZ , you definitely confirmed what I thought would fix it. 👍
@@Mikey2Times There's always a rotten apple in the bunch lol
Where does the Z come from lol. Video isn't bad. Thank you
The "Z" stands for the area between the first and second check valve "the Zone" - Some manufacturers refer to this type of backflow preventer as a "Reduced Pressure Zone Assembly" while other manufacturers refer to them as a "Reduced Pressure Principle Assembly"
@@JimmyBackflow oh wow, this comment was really helpful! Thanks!
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