The valves fill up with crap.
Water coming from pressure relief valve on boiler.
The feed valve regulates water pressure into the system.
When the water in the system heats up it expands.
Extreme pressure within the system could cause the boiler or water lines to rupture.
These valves may look identical but they re set to go off at 30 psi.
So if the thing is leaking then it is unlikely that you are going to have a problem with the boiler running out of water because there is obviously water in the system.
Some boiler rooms have a bucket under the relief valve discharge pipe to mask the problem.
Relief valves are designed to open at a preset pressure or temperature level and relieve the system when it has exceeded the desired level.
The relief valve is working the way it s intended and water drained to reduce the pressure inside the tank.
To identify if you have an over pressure fault look at the gauge needle on your boiler it should be pointing in the green section set to around one bar.
Leaks at temperature pressure relief valves.
This article describes the causes of leaks drips or discharges from pressure relief valves temperature pressure relief valves or tp valves found on heating boilers water heaters or the simpler pressure relief valves found on water pressure tanks.
Some boilers have a tankless water heater or what is also known as a hot water coil.
The pressure relief valve also as known as a blow off valve is a vital component of a boiler.
When you see water coming out from the water heater release valve there are two most likely causes.
If it s in the red that indicates over pressure.
While it may appear to be inconsequential it could cause extensive damage to the heating system.
We offer a wide selection of relief valves for any application.
The valve s relief of elevated liquid gas or steam pressures prevents damage to the system.
If the pressure rises whether the boiler temp is rising or not then you may have a faulty feed valve.
Sometimes this coil will develop a pin in it and this causes pressure to seep into the boiler and leads to leaks in the pressure relief valve.
Reasons for water discharging from the relief valve.
If a pressure relief valve for a boiler is accidentally installed on a water heater it will leak like crazy from the start.
Turn off the water to the coil and check if the pressure stops rising.
The boiler pressure relief valve is designed to leak water as a safety protection feature to prevent damaging your appliances.
A common sight in a hydronic boiler room is water dripping from the discharge pipe of the boiler relief valve.
The following are some suggestions if you would like to resolve the problem.
We list the wide variety of possible tp valve leaks and how to find and fix each of those.
If it is the pressure release valve then it s there in case the water in the boiler goes over pressure it will open and release water.
