The Water Valve is an OEM part for GE electric dryers. Located near the bottom of the machine, it controls water flow into the condenser system during moisture-sensing cycles. The moisture sensing function uses this valve to introduce precise amounts of water vapor into the exhaust air stream periodically. This allows the condenser to capture moisture readings accurately and determine optimal cycle time based on humidity levels.  Causes of failure include mineral buildup restricting flow, worn seals enabling leaks, or misaligned internal components hindering valve movement. Symptoms of a faulty water valve are:  Loss of moisture sensing ability Incomplete or improper readings affecting cycle times   Water leaks from the valve area Failure to inject water vapor as needed This part is also compatible with some Kenmore models using GE components.Part Number WE4M503 (AP4980901) replaces 1811211, AH3487193, EA3487193, PS3487193, WE04M10009.