Dead-End Lock-Up: The lever-acting design prevents pressure creep during periods of zero demand

You can use either code number for the same installation requirements

on its side

or the system getting stuck in a "soft lockout" after multiple unsuccessful ignition trials

Can this be used for steam boiler applications

Schneider Electric (Barber Colman) MA51-7203 Actuator Refrigerant Dead-End Lock-Up: The lever-acting designThe Schneider Electric (Barber Colman) MA51 7203 is a direct mount DuraDrive actuator engineered for high performance two position (on off) control in demanding HVACR applications. Operating on 24V AC DC, this spring return actuator provides a robust 220 lbf (979 N) force, making it a reliable solution for driving VB 7xxx and VB 8xxx globe valves without the need for complex linkages. Its internal spring return fail safe mechanism ensures the valve