1/2" Natural Gas Valve, 120V

Rheem SP13845A Natural Gas Control Valve – OEM Replacement for Select Rheem Water Heaters

The Rheem® SP13845A is an OEM natural gas control valve designed for use with specific Rheem residential gas water heaters. This valve serves as the primary control for gas flow regulation and burner ignition, integrating safety shutoff functions to ensure proper system performance.

Intended Use and Application

This control valve is engineered for natural gas water heater systems requiring integrated temperature control, gas regulation, and ignition management. It is a direct replacement component for models originally equipped with this part number and is not intended for use in propane (LP) applications. Compatibility must be confirmed using unit model and serial number.

Core Features

• ✅ Factory-Calibrated Safety Shutoff – Includes integrated temperature sensing and flame safeguard mechanisms.
• ✅ 1/2" NPT Inlet Size – Standard connection size for most Rheem tank-type gas water heaters using this model valve.
• ✅ Electronic Control Interface – Operates with 120V input from the appliance’s control system.
• ✅ OEM Fitment – Designed specifically to match mounting configuration and performance of factory-installed units.

Technical Specifications

• Part Number: SP13845A
• Fuel Type: Natural Gas
• Voltage Input: 120V
• Inlet/Outlet Connection: 1/2" NPT
• Application: Residential tank-type gas water heaters

Installation and Service Notes

This gas control valve should only be installed by licensed personnel trained in gas appliance service. Proper line purging, leak testing, and adherence to code requirements are essential. Unit must be grounded and connected to a compatible control system. Always verify model compatibility before installation.

Contractor Use Guidance

The SP13845A is commonly stocked for service and replacement of Rheem water heater gas valves. Its design allows for fast swap-out with existing components using standard threaded connections and bracket interfaces. It is important to verify voltage, gas type, and model number before replacement to prevent operational faults.