By connecting the high and low-side hoses to the appropriate test cocks and slowly opening the needle valve

this Honeywell-sourced gas valve ensures stable BTU input and consistent flame rectification for larger Weil-McLain boiler applications

the 49L90 is technically identical to the 49L9001

Balanced Port Design: Maintains stable performance despite wide changes in operating pressures

With 1-1/8" sweat connections and integrated access valves

ASCO 8262H261 Valve 319852-301 By connecting the high andThe ASCO 8262H261 Valve is a high performance 2 way normally open solenoid valve engineered for precision fluid control in demanding HVACR and industrial environments. This direct acting general service valve features a 1 4" NPT connection and is powered by a reliable 120Vac coil. Built with a rugged brass body and high grade NBR seals, it ensures exceptional durability and tight shutoff (0. 21 Cv flow factor). This model is designed to handle a