Gas Valve & Thermostat, 120V

Rheem SP13846A LP Gas Control Valve and Thermostat – 120V OEM Replacement for Residential Applications

The Rheem® SP13846A is an OEM liquid propane (LP) gas control valve and thermostat designed for select Rheem residential water heaters. This control assembly regulates burner operation, controls tank water temperature, and integrates safety mechanisms including flame sensing and high-limit protection. It is configured for 120V systems and supports sealed combustion applications.

Application and Functionality

Intended for use in LP-fired tank-style water heaters, the SP13846A is a direct replacement component for units requiring electronic ignition and valve control at 120 volts. This valve manages gas flow to the burner while maintaining temperature consistency via built-in sensor feedback and thermostatic regulation. Always confirm compatibility using the model and serial number of the water heater before replacement.

Key Product Features

• ✅ LP Gas Control with Integrated Thermostat – Maintains target temperature and manages burner function through electronic control.
• ✅ Electronic Ignition Interface – Supports 120V operation with integrated spark ignition and flame monitoring.
• ✅ Safety Shutoff Capabilities – Includes high-limit protection and automatic shutoff in the event of ignition failure.
• ✅ OEM Configuration – Manufactured to meet original equipment dimensions and performance criteria for Rheem systems.
• ✅ Threaded Gas Connections – Facilitates secure connection to LP gas supply using standard NPT fittings.

Technical Specifications

• Part Number: SP13846A
• Fuel Type: Liquid Propane (LP)
• Voltage: 120V AC
• Application: Rheem residential water heaters (sealed combustion, LP models)
• Function: Burner gas flow control and water temperature regulation
• Mounting: Horizontal valve orientation with threaded connections

Installation Requirements

Installation of the SP13846A must be performed by licensed professionals with experience in LP gas systems. Proper leak testing, grounding, and system diagnostics are essential. Confirm the voltage, fuel type, and water heater model before proceeding with installation. Follow Rheem technical documentation for wiring, torque specs, and start-up procedures.

Contractor Notes

The SP13846A is frequently used in service calls involving burner ignition failure, temperature inconsistency, or valve malfunction. It is pre-calibrated and includes factory settings for integration with compatible control boards. Ensure correct probe depth, electrical continuity, and ignition sequence verification following installation.