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 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.
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! 👏🏼
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
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.
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!