The standard spring in this model has a cracking pressure of 0

this "new style" regular temperature diaphragm provides the flexibility and resilience required for consistent modulating control in steam and water valve applications

The Trane SWT1271 is a critical furnace high limit switch designed for HVAC system diagnostics and thermal protection

it includes the integrated sensing bulb required to monitor suction line temperature for automatic flow adjustment

This unit serves as a critical furnace gas valve assembly featuring a 1/2" NPT inlet and outlet with a step opening characteristic

Lochinvar & A.O. Smith 100110850 Lower Probe 318172-701 The standard spring in thisThe Lochinvar & A. O. Smith 100110850 Lower Probe is a precision engineered OEM replacement part designed for high performance commercial and residential water heating systems. As a critical immersion temperature sensor, this lower probe provides the control board with real time thermal data to regulate firing rates and maintain accurate setpoints. Built for high duty cycle environments, the 100110850 probe (also identified by part number 9006048205)