Pentair Automatic Gas Shutoff Switch 140°F | MasterTemp HD 125 Pool & Spa Heater | 474368Z
Pentair Pool Products and Parts

Pentair Automatic Gas Shutoff Switch 140°F | MasterTemp HD 125 Pool & Spa Heater | 474368Z

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SKU:
474368Z

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About This Item

OEM Gas Shutoff Switch for the MasterTemp HD 125 Heater

The Pentair 474368Z is the OEM replacement automatic gas shutoff switch for the MasterTemp HD 125 Pool and Spa Heater, rated at 140°F.

⚠️ IMPORTANT: LICENSED PROFESSIONAL INSTALLATION REQUIRED
Gas and electrical heater components must be serviced by a licensed pool professional or qualified HVAC technician. Do not attempt to service gas or high-voltage components without proper certification.

The automatic gas shutoff switch is a safety-critical component in the MasterTemp HD 125 heater. When the heater reaches or exceeds its rated threshold temperature, this switch interrupts the gas supply to prevent unsafe operating conditions. A failed or tripped shutoff switch will prevent the heater from firing or cause it to shut down unexpectedly. Replace with the OEM part to ensure the switch operates within the heater's designed safety parameters.

Specifications

Pentair Part Number 474368Z
Temperature Rating 140°F
Fits MasterTemp HD 125 Pool and Spa Heater
Quantity Included 1

Pro Tip

Before ordering, confirm the part number printed on your existing switch matches 474368Z. The MasterTemp line includes multiple shutoff switches rated at different temperatures — ordering the incorrect temperature-rated switch will cause the heater to shut down prematurely or fail to protect against overtemperature conditions. Match the number on the original component, not just the heater model.

CALIFORNIA PROPOSITION 65 WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
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Pentair Pool Products and Parts

About Pentair Pool Products and Parts

Pentair is often considered the "gold standard" for pool professionals, and for good reason. Founded in 1966 (originally by five inventors making high-altitude balloons!), the company has evolved into the global leader in smart, sustainable water solutions. For the DIY homeowner, Pentair represents the intersection of rugged durability and silicon valley-tier technology. They pioneered the Variable Speed Pump revolution with the IntelliFlo®, saving American pool owners millions in energy costs. Today, their ecosystem focuses heavily on automation, allowing you to control your pump, heater, lights, and chemistry from a single app. While they are a favorite among professional builders, their "EC" (E-Commerce) line of equipment allows homeowners to access pro-grade technology with valid warranties for DIY installation.

Why We Trust Pentair Pool Products and Parts
Energy Efficiency Leaders: Recipient of the ENERGY STAR® Partner of the Year award for over a decade; their pumps are designed to pay for themselves in energy savings.

Smart Automation: The Pentair Home App and IntelliCenter systems offer best-in-class control over your pool ecosystem from anywhere in the world.

Professional Pedigree: The brand most often recommended and installed by pool builders for high-end residential pools.

Eco-Conscious: Dedicated to reducing water waste and energy consumption through "Green" technology innovations.

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