What is the difference between SPST and SPDT aquastats in this application

SPST Normally Closed Contacts: Provides a straightforward NC limit switch interface for rapid diagnostic testing during service calls

This specific HVAC furnace ignitor replacement is a direct match for 80V systems

ensuring no modifications to the motor shaft or mounting depth are required

Designed for use in building automation systems and heavy-duty commercial HVAC environments

GC Valves KS211AF02C5FG9 Repair Kit Els PW 17895 What is the difference betweenThe GC Valves KS211AF02C5FG9 Repair Kit is a high grade OEM rebuild solution engineered specifically for KS Series solenoid valves. Designed for demanding HVACR and industrial fluid control applications, this solenoid valve rebuild kit includes the critical internal componentstypically the plunger, spring, and diaphragm or sealsrequired to restore factory spec pressure ratings and flow coefficients. Utilizing a GC Valves KS211AF02C5FG9 kit ensures