Forum Discussion
Old-Biscuit
Nov 14, 2013Explorer III
The relief valve leaks due to the increased pressure from lack of air pocket.
The relief valve has a lever on it in order to operate the valve. Operating the valve will clear debris/scaling from valve. The valves are not just a one shot valve...they can be operated as designed.
Normal filling of WH typically establishes the air pocket. But the air can be absorbed during heating cycles and because RV plumbing is a closed system the air pocket needs to be re-established on occasion.
Using the PRV to drain water from top of WH tank is the recommended method.
The relief valve has a lever on it in order to operate the valve. Operating the valve will clear debris/scaling from valve. The valves are not just a one shot valve...they can be operated as designed.
Normal filling of WH typically establishes the air pocket. But the air can be absorbed during heating cycles and because RV plumbing is a closed system the air pocket needs to be re-established on occasion.
Using the PRV to drain water from top of WH tank is the recommended method.
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