Natural Gas Valve and Thermostat for Water Heater

Rheem SP14339B Natural Gas Control Valve and Thermostat Assembly

The Rheem SP14339B is a factory-specified natural gas valve and thermostat assembly designed for use with select Rheem and Ruud commercial-grade water heaters. This unit provides integrated control of gas flow and water temperature, supporting consistent burner operation and system safety.

Engineered for compatibility with high-capacity water heaters, the SP14339B meets critical performance requirements for systems operating under continuous demand. It is built with durable components and configured to ensure proper ignition, shutoff, and temperature regulation in natural gas applications.

Application & Compatibility

• Compatible Models: RHGPRO75F, RUGPRO75F, 42V75F, PH2-75F (natural gas)
• Use Case: OEM replacement in commercial or high-demand residential installations
• Fuel Type: Natural Gas
• Connection: 1/2" NPT inlet

Functional Features

• Temperature Regulation – Maintains consistent hot water output per manufacturer-specified parameters.
• Integrated Safety Controls – Includes automatic shutoff and fail-safes for burner operation.
• System Compatibility – Designed to match the combustion control and mounting configurations of specified models.
• Durable Build – Built to withstand thermal cycling and long-term exposure in high-demand water heating systems.

Installation Guidelines

Installation of the SP14339B should be completed by qualified personnel familiar with gas-fired water heater components. Ensure all gas connections are sealed and leak-tested. Follow all applicable code requirements, and verify that the thermostat dial, sensing bulb, and pilot assembly are positioned correctly.

Contractor Notes

This control valve assembly is intended as a direct replacement for factory-installed units in compatible Rheem and Ruud natural gas water heaters. It simplifies service by aligning with OEM wiring and mounting standards. Always confirm model match and inspect for damage prior to installation.