Functional Devices PSH100AWB10 Power Supply R-22 whereas the 174A typically uses

whereas the 174A typically uses bronze bodies for lower capacity or domestic supply applications

It maintains the same 42 frame size

0 Cv high-flow capacity ensures minimal pressure drop across the system while maintaining spring return fail-safe operation

making it a staple for commercial and institutional boiler or water heater configurations

Antunes 8502100053 Limit Controller is a high-performance 24Vac TFH Series High/Low Temperature Limit Controller designed for critical equipment protection in industrial HVAC

Functional Devices PSH100AWB10 Power Supply R-22 whereas the 174A typically usesThe Functional Devices PSH100AWB10 is a heavy duty, 100VA enclosed power supply designed for high demand Building Automation Systems (BAS) and industrial control applications. Built with a single 120 to 24 VAC split bobbin transformer, this unit provides a reliable Class 2 output to power controllers, actuators, and sensors. The integrated 10 Amp main circuit breaker acts as a primary disconnect, cutting power to the entire unitincluding the 120 VAC