How do I test this limit switch during a service call

this power supply includes integrated circuit breakers for overcurrent protection

and fuel gas

and mixed gas piping systems

Conbraco 19-MGFA-150 Valve R-410A How do I test thisThe Conbraco 19 MGFA 150 is a high capacity ASME Section I steam pressure relief valve engineered specifically for power boiler applications and pressure piping systems. Built with a 1 1 4" male NPT inlet and 1 1 2" female NPT outlet, this valve features a brass trim and metal seat configuration for durable performance in high temperature environments. Factory set at 150 PSI, it delivers a certified discharge capacity of 4,240 pounds per hour. The