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That would depend on the size and heating capacity of the water heater. You need a temperature and pressure relief valve ( not a pop valve which is pressure only) with an ASME rating at or above the input rating on the water heater.
For example: a domestic, gas fired, 40 US gallon water heater might have 36,000 BTU per hour input rating. The pressure relief might be set to 125 or 150 psi, but the temperature rating would have to be at least 36,000 BTUH. A 3/4" T&P relief valve typically is rated at 100,000 btu per hour.
If you are dealing with a larger unit ( a 50 or 60 gallon tank, or a cyclone ) you will have to check the rating plate to get the proper relief valve.
What else can I help you with?
How much pressure does a water heater put off when it explodes?
You would need to specify the size of the heater
How do you replace the pressure relief valve on a water heater?
To replace the pressure relief valve on a water heater, first, turn off the power and water supply to the heater. Allow the water to cool down. Next, locate the valve on the top or side of the heater and unscrew it using a wrench. Replace it with a new valve of the same size and pressure rating. Finally, turn the water and power back on and check for leaks.
What are the necessary hot water heater fittings required for installation?
The necessary hot water heater fittings required for installation include a pressure relief valve, a shut-off valve, a drain valve, and appropriate pipe fittings for connecting to the water supply and hot water lines. It is important to ensure that all fittings are compatible with the specific type and size of the hot water heater being installed.
Tankless Water Heater?
form_title= Tankless Water Heater form_header= Repair or install a tankless water heater in your home! Do you need a tankless water heater repaired or installed?*= () Repaired () Installed What size water heater do you need?*= _ [50] What is your budget on the water heater?*= _ [50]
What is the appropriate water heater breaker size according to the water heater breaker size chart?
The appropriate water heater breaker size is determined by the water heater's wattage and voltage, as indicated in the water heater breaker size chart. It is important to match the breaker size to the specifications of the water heater to ensure safe and efficient operation.
How can I replace a water heater pressure relief valve?
To replace a water heater pressure relief valve, first turn off the water and gas or electricity supply to the heater. Drain some water from the tank to relieve pressure. Unscrew the old valve and replace it with a new one of the same size and pressure rating. Use Teflon tape on the threads for a secure fit. Finally, turn the water and power back on and check for leaks.
What size Full Port Ball Valve do I need for 18 gallons of water at 50 psi?
Depends what size your pipe is
What size wire should be used for a hot water heater?
The size of wire needed for a hot water heater depends on the heater's wattage and the distance from the electrical panel. It is recommended to consult a professional electrician to determine the appropriate wire size for your specific hot water heater.
What size water heater for 3000 square foot home?
what size water heater for 3000 sq ft 4 bathroom house
What size breaker do you need for a 40 gallon electric water heater?
Usually 30 amp
How can I choose the best water heater for my sink?
When choosing a water heater for your sink, consider the size of your sink, the amount of hot water you need, and the energy efficiency of the heater. Look for a heater that fits your sink's dimensions, provides enough hot water for your needs, and has a high energy efficiency rating to save on utility costs.
Why does the hot water run out before the bathtub is full?
This is just a guess but you either need a new water heater or you need to adjust the temperature of the one you have.
