this 2-way piloted diaphragm valve features a 5/8" orifice and 1/2" NPT pipe connections

The Antunes 8224212021 Pressure Switch (Model HGP-G) is a field-adjustable differential air pressure switch designed for high-accuracy sensing in commercial HVACR and process heating systems

the 1190303 is the current factory-authorized replacement for the discontinued 1184562

While primarily a York S1-025-35306-000 genuine component

FAN) for rapid industry-standard wiring and replacement

Crown Engineering H24-36 Spiralink Coupler 320788-702 this 2-way piloted diaphragm valveThe Crown Engineering H24 36 Spiralink Coupler is a heavy duty, single spring replacement solution engineered for HVACR circulator pumps. Designed to replace the traditional failure prone OEM multi spring "fly away" couplings, this 5 8" x 5 8" CCW coupler features a robust one piece construction that significantly reduces friction and mechanical noise. The counter clockwise (CCW) rotation and dual 5 8 inch bore diameters ensure precise alignment