Watts 0556004 LLL100XL-150 3/4″ T&P Relief Valve 105,000 BTU

Description

Watts LLL100XL-150 Temperature & Pressure Relief Valve

The Watts 0556004 LLL100XL-150 is a 3/4″ temperature and pressure (T&P) relief valve rated at 105,000 BTU, engineered to provide dependable overpressure and overtemperature protection for residential and light commercial water heaters and hydronic systems. Built to Watts’ exacting quality standards, this valve automatically opens to safely discharge excess pressure or dangerously high temperatures before they can cause equipment damage or safety hazards.

Key Features

• 3/4″ inlet connection for straightforward installation on standard water heater ports
• 105,000 BTU relief capacity — suitable for a wide range of residential and light commercial water heaters
• 150 PSI pressure relief setting (LLL100XL-150) for precise overpressure protection
• Temperature and pressure dual-function relief in a single compact valve body
• Durable construction designed to meet ANSI/NSF and ASME standards typical of Watts T&P relief valves
• Lever-operated test function allows periodic manual verification of valve operation

Applications

• Residential and light commercial water heaters
• Hydronic heating systems and boilers requiring T&P protection
• Potable hot water storage tanks

Product Specifications

• Brand: Watts
• Model: LLL100XL-150
• SKU: 0556004
• Connection Size: 3/4″
• BTU Rating: 105,000 BTU
• Pressure Setting: 150 PSI
• Valve Type: Temperature & Pressure (T&P) Relief Valve