2 switch can be installed directly onto the unit to add burner-interruption safety features

Universal valves often require manual bulb positioning and orifice sizing

and high taps to match specific system requirements

Note the critical mechanical upgrade: the -961 utilizes Rotolock connections (1-1/4" suction x 1" discharge)

2 Cv rating combined with equal percentage flow ensures tight control at low demand while maintaining high volume capacity

Lochinvar & A.O. Smith 100276831 Valve 321702-401 2 switch can be installedThe Lochinvar & A. O. Smith 100276831 Valve is a heavy duty 2 1 2" 3 way bypass valve engineered for precision flow control in commercial hydronic and potable water systems. Designed to handle the rigorous demands of high output boilers and water heaters, this 3 port diverting valve allows for seamless redirection of fluid between the primary loop and the bypass circuit. Its robust construction ensures long term performance in commercial HVACR