The Weil-McLain 450-021-242 isolates the combustion chamber from external wind conditions and chimney draft variations

for older systems with mineral oil

which allows it to control higher pressures and larger flow volumes compared to typical direct-acting models

Operating on 24VAC low voltage

or hot surface ignition systems

Setra 2561015PG2M11 Pressure Transducer Refrigerant The Weil-McLain 450-021-242 isolates theThe Setra 2561015PG2M11 Pressure Transducer is a ruggedized industrial sensor engineered for precision gauge pressure monitoring in demanding HVACR and process control environments. This specific configuration features a 0 to 15 PSI pressure range and delivers a standard 4 20 mA output, ensuring seamless integration with building automation systems and industrial PLCs. Built with a durable die cast aluminum enclosure and NEMA 4 IP65 rated protection,