Peerless Relief Valve Discharge / Overpressure

Boiler leaks water from the pressure relief valve discharge pipe

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Failed expansion tank, overfilled system, faulty pressure relief valve, overheating

Safety first: Hot water can cause burns. Allow system to cool before working on it.

Steps:

Check pressure: Read the boiler gauge. If near or above 30 psi, shut off the boiler.
Inspect expansion tank: Test and recharge or replace the diaphragm expansion tank as needed.
Verify fill valve: Ensure the automatic fill valve is not overfeeding. Replace if it does not regulate properly.
Replace relief valve: If pressure is normal but valve continues to drip, replace the Peerless-rated 30 psi relief valve.

Hard 4/5

Pressure relief valve

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