Water Heater Vacuum Relief Valve Installation

Series n36 water service vacuum relief valves are used in water heater tank applications to automatically allow air to enter into the piping system to prevent vacuum conditions that could siphon the water from the system and damage water heater tank equipment.

Water heater vacuum relief valve installation.

Mount prvs in a vertical position which means upright and with the spindle vertical. A valve installed in any position other than vertical might not perform correctly. Hot in on one side cold in on the other and the tempered water out of the center to the system. Wrap the threads of the new tpr valve with plumber s tape or apply joint compound liberally.

Directly above the vertical line that feeds the tank my hot water tank is under the. With a bottom supply tank nothing except a check valve is going to keep the water in the tank once a hot water faucet is opened so air can break the vacuum in the tank. Screw the valve into the tank until it is hand tight and then use a wrench to tighten it until the outlet is facing towards the overflow drain pipe. A watts model n36 m1 vacuum relief valve shall be installed on domestic hot water supply tanks heaters unit heaters steam kettles as indicated on plans.

This is especially crucial for cast iron valves. In order to gain occupancy an inspector informed me that i need to install a vacuum relief valve on the cold water supply line for my hot water tank. I purchased a vacuum relief valve and the installation instructions that came with it states that it should be installed on a horizontal line above an elbow. Violating these codes may result in fines voiding your warranty or putting your family at risk.

Reconnect the drain pipe. Valve the purpose of a vacuum relief valve is to keep the water in the tank and prevent siphonage. The vacuum relief valve is installed at the highest point in the system. Tempering valves can be installed anywhere they are needed.

The vacuum relief valve shall have an all brass body and include a protective cap. They have a brass body construction with npt male inlet connection and a protective cap. In all cases air entry is required to enable the system to reach an equilibrium. Uma solar vacuum relief valve.

Understanding water heater installation code requirements can be a real pain. For flanged valves be sure to draw the bolts down evenly. Vacuum relief valves are used in water heater tank applications to automatically allow air to enter into the piping system to prevent vacuum conditions that could siphon the water from the system and damage water heater tank equipment.