A.o. Smith 100108600 T and P Relief Valve 2.5 in Shank

Product Description

The A.O. SMITH 100108600 is a residential temperature and pressure (T and P) relief valve designed as a direct replacement for water heater installations. Carrying model designation TP-103, this valve features a 2.5-inch shank length sized for standard residential water heater ports. The T and P relief valve is a critical safety component that opens automatically to release excess pressure or temperature buildup, protecting the tank and surrounding plumbing from failure. Licensed plumbers and water heater service technicians install this part during routine maintenance, water heater replacement, or valve failure calls.

This valve is intended for residential water heater applications and is confirmed compatible with all A.O. SMITH models, including direct vent water heater configurations. It is a drop-in replacement for a failed or expired T and P relief valve on existing residential units. The 2.5-inch shank fits the standard relief valve port found across the residential product line, making it a practical stock item for service technicians who regularly service A.O. SMITH equipment.

Key Features

• 2.5-inch shank length fits standard residential water heater relief valve ports
• Compatible with all A.O. SMITH residential models, including direct vent configurations
• Functions as a safety device, discharging under excess temperature or pressure conditions
• Direct OEM replacement under model designation TP-103
• Designed specifically for residential orientation installations

Compatibility

Fits all A.O. SMITH residential water heater models, including direct vent models, as stated by the manufacturer. This is a confirmed OEM-style replacement valve for residential units requiring a T and P relief valve with a 2.5-inch shank.

Installation Notes

T and P relief valve replacement is performed by a licensed plumber in accordance with local plumbing codes and IPC guidelines. Before servicing, shut off the cold water supply and disconnect power or gas to the water heater to allow the unit to cool. The discharge line connected to the valve must terminate at a safe point per code — never cap or plug a T and P relief valve discharge port. Inspect the new valve seating and port threads carefully before installation to ensure a leak-free connection.

Technical Specifications

• Model: TP-103
• Type: T and P Relief Valve
• Shank Length: 2.5 inches
• Application: Residential Water Heater
• Part Category: Replacement Part

Standard Information

• Brand: A.O. SMITH
• Manufacturer Part Number: 100108600