Incredible Pressurizing A Home Water Holding Tank References. Up to 8% cash back pressurewave 34.34 gal. After the tank is full of water open a faucet or shower head and test the pressure.

You’ll need a dial or digital pressure gauge to check your water tank pressure. Turn off the pump’s power supply and the outgoing valve to the plumbing. Many require at least 10 psi to operate properly.