Product Overview

Pentair 474980 MasterTemp 125 LP Gas Orifice Kit

The Pentair 474980 Gas Orifice Kit is a genuine Pentair replacement orifice kit for Pentair MasterTemp 125 propane (LP) pool and spa heaters. The gas orifice meters the flow of fuel to the burner, so the correct orifice for the heater model and fuel type is essential for proper combustion and heater performance.

Ideal For

Service and repair of Pentair MasterTemp 125 propane heaters

Replacing a damaged, worn or incorrect gas orifice

Pool heater technicians performing burner-system service

Key Features

Genuine Pentair OEM part: part number 474980.

Propane (LP) orifice kit: for MasterTemp 125 heaters configured for propane.

Model-specific: made for the MasterTemp 125 burner system.

Specifications

Warranty & Compatibility

Compatibility Notes

This orifice kit is listed for the Pentair MasterTemp 125 heater. Pentair offers a separate, complete natural-gas-to-propane conversion kit for the MasterTemp 125; confirm whether your job requires the orifice kit alone or the full conversion kit by checking the heater's parts diagram, model number and serial number before ordering.

Installation Notes

Gas orifice replacement and any fuel-type conversion should be performed only by a qualified gas appliance or pool heater technician in accordance with Pentair's instructions and local codes. Turn off gas and electrical power before service, and after installation leak-test all gas connections and verify proper burner operation and gas pressure.

Customer-Facing Q&A

Q: What is the Pentair part number for this orifice kit?
A: The part number is 474980.

Q: What is the UPC?
A: The UPC is 788379864439.

Q: What heater does it fit?
A: It is listed for the Pentair MasterTemp 125 heater, propane (LP) configuration.

Q: Is this a complete natural gas to propane conversion kit?
A: This listing is the gas orifice kit. Check the heater's parts diagram to confirm whether a full conversion kit is required for your conversion.

Q: Can I install this myself?
A: Gas orifice work should be done by a qualified gas or pool heater technician.