Johnson Controls DPM17A 600R Repair Kit The Rheem Ruud SP10874GH Heating Element The Rheem Ruud SP10874GH Heating Element is a 120V 2000W screw in heating element engineered for high performance thermal transfer in residential and light commercial water heaters The single pole double throw (SPDT) configuration provides versatility for normally open (NO) or normally closed (NC) logic diaphragm failure is the primary cause of system hunting and inaccurate setpoint maintenance in HVAC mechanical control systems This kit provides the high tensile components required to rebuild the internal pressure chambers of compatible Johnson Controls diaphragm actuated valves and regulators