Description
Lochinvar & A.O. Smith 100208444 Temperature & Pressure Relief Valve
The Lochinvar & A.O. Smith 100208444 is an OEM-grade temperature and pressure (T&P) relief valve engineered to provide critical overpressure and overtemperature protection for commercial and residential water heaters and boiler systems. Designed to meet the demanding performance requirements of Lochinvar and A.O. Smith equipment, this valve delivers reliable, code-compliant safety protection with every installation.
Key Specifications
- Inlet Size: 3/4″
- Pressure Rating: 150 PSI
- Element Length: 3″
- BTU Capacity: 1,912,000 BTU/hr (1.912 mBTU)
- Valve Type: Temperature & Pressure (T&P) Relief Valve
- OEM Part Number: 100208444
- Compatible Brands: Lochinvar & A.O. Smith
Product Features & Benefits
- Provides dual temperature and pressure relief to protect water heaters and boiler systems from dangerous overpressure conditions
- 3/4″ inlet connection for straightforward integration into standard plumbing configurations
- 150 PSI pressure rating ensures robust protection for high-demand commercial and residential applications
- 3″ element length allows for proper immersion into the water heater or boiler tank for accurate temperature sensing
- High BTU discharge capacity of 1.912 mBTU supports large-capacity heating equipment
- OEM-specified replacement part ensures compatibility and maintains system warranty compliance
Application
This T&P relief valve is a direct OEM replacement for Lochinvar and A.O. Smith water heaters and boiler systems requiring a 3/4″ inlet, 150 PSI rated valve with a 3″ sensing element. It is ideal for service technicians and contractors performing routine maintenance, safety inspections, or emergency replacements on commercial and residential heating equipment.







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