This unit is built with a standard 1/4" pilot outlet and a three-position gas cock dial (Off-Pilot-On) for simplified troubleshooting and maintenance during service calls

this combination gas control ensures reliable performance across diverse gas-fired appliances

The 8-inch extension ensures the thermostat is immersed in the top six inches of the tank water

you will need step-down bushings or reducers

It includes the internal moving parts and seals

Johnson Controls VG1241AD Valve 320819-301 This unit is built withThe Johnson Controls VG1241AD Valve is a high performance 1 2 inch NPT ball valve engineered for the precise regulation of hot and chilled water or 50% glycol solutions in commercial HVAC systems. Featuring a 1. 2 Cv flow coefficient, this two way control valve utilizes an integrated Amodel flow characterization disk to deliver a consistent equal percentage flow characteristic, ensuring linear heat transfer and stable temperature control across the