Description
Dometic/ Atwood Water Heater Pressure-Temperature Relief Valve, 1/2 in NPT, 150 PSI 91604
The Dometic/ Atwood 91604 Pressure-Temperature Relief Valve, 1/2 in NPT, 150 PSI is a pressure-temperature relief valve that releases water if tank pressure or temperature gets too high. It is a genuine OEM replacement part.
Part Number: 91604
Fits
Fits Atwood water heaters made before February 2006 with a 1/2 in relief valve port. Newer models use the 3/4 in valve 90028.
Specifications
- 150 PSI
- 210 F temperature rating
- 1/2 in NPT
- About 7-1/4 in overall
- Orange thread protector
Why Replace It
A relief valve that drips constantly, sticks or is corroded can no longer protect the heater. Replace it rather than plugging it.
Installation
Turn off the heater and water supply, relieve pressure, drain water below the valve, unscrew the old valve and thread in the new one with sealant.
Estimated Installation Time
20 to 40 minutes
Tools Required
Wrench, thread sealant
FAQ
Will this fit my water heater?
Check the model and serial number on your water heater's rating plate against the fit list above. If you're not sure, send us your model and serial number and we'll confirm the fit before you order.
Do I need a technician?
No. Most owners can replace this part themselves by following the steps above. If you're not comfortable working on a pressurized water system, you can always hire an RV technician to come out. If you need assistance with the install, we're here for you.
