Water Heater Vacuum Relief Valve Installation

Violating these codes may result in fines voiding your warranty or putting your family at risk.

Water heater vacuum relief valve installation. These valves are suitable for low pressure steam and water service and are ideal for use in water heaters and supply tanks table top heaters jacketed steam kettles unit heaters low pressure steam systems and steam coil heaters. Hot in on one side cold in on the other and the tempered water out of the center to the system. 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. Tempering valves can be installed anywhere they are needed.

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. T p valve the temperature and pressure relief valve is an important safety device which goes off when your tank exceeds 210 degrees fahrenheit or 150 psi. They have a brass body construction with npt male inlet connection and a protective cap. Uma solar vacuum relief valve.

Reconnect the drain pipe. The vacuum relief valve is installed at the highest point in the system. Mount prvs in a vertical position which means upright and with the spindle vertical. 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.

The vacuum relief valve shall have an all brass body and include a protective cap. 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. 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. In all cases air entry is required to enable the system to reach an equilibrium.

Wrap the threads of the new tpr valve with plumber s tape or apply joint compound liberally. Valve the purpose of a vacuum relief valve is to keep the water in the tank and prevent siphonage. The vacuum relief valve shall be ansi z21 22 rated and csa certified. 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.

A valve installed in any position other than vertical might not perform correctly. Understanding water heater installation code requirements can be a real pain. This is especially crucial for cast iron valves.