Forum Discussion

bondj007's avatar
bondj007
Explorer
May 02, 2016

Help! Water pump pressurizing when using hot water tank.

Decided to be a little proactive and replace my water pump. After install of my SHurflo 4008 I determined that my check valve on the hw tank needed replacing. That statement is simplifying 2 hours o...
Bobbo's avatar
Bobbo
Explorer II
May 04, 2016
bondj007 wrote:
Hmmm - Good point, however the one thing that confuses me is the pump pressurizing delay also happens when just running cold water - ie nothing should be coming from hw tank but still takes 5 secs to pressure up when hw tank bypass is off. Why would this be?

There is no check valve on the cold water line going into the water heater. When you open a cold water faucet, the cold water line pressure drops, and the water heater pressure drops too.

About Technical Issues

Having RV issues? Connect with others who have been in your shoes.24,187 PostsLatest Activity: Jan 14, 2025