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RE: Water Heater Relief Valve blowing

Posted by Terry on March 10th, 2003 08:25 PM
In reply to WATER HEATER by Chris Stewar on March 9th, 2003 03:06 AM [Go to top of thread]

The relief valve is DESIGNED to blow on Temperature OR Pressure; SO IF blowing, I would first check/ water temp, and replace thermostat; If relief is doing its job correctly with a bad thermostat, it is Preventing a tank explosion;

If thermostat bad (stuck ON), temp will rise to about 190-200; relief blows, which brings in new cold water and temp cools down; relief closes; and cycle starts again;

If CONSTANTLY LEAKING, it could just be a bad relief valve and a 10-minute $15.oo repair

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