The auxiliary end switch provides a dry contact closure when the valve reaches the fully open position

Utilizing an HVAC inducer motor kit like the 3H0373620004 is essential for ensuring the venter pressure switch closes reliably

921483 is the cross for C3BA-042C-B

The Johnson Controls P352PN-3 is a professional-grade electronic proportional pressure control designed for precise pressure management in commercial HVACR systems

you would require a Double Pole Double Throw (DPDT) variant from Intermatic

Ashcroft 25W1005H02L-0/60 Gauge 319848-301 The auxiliary end switch providesThe Ashcroft 25W1005H02L 0 60 is a high performance commercial pressure gauge designed for precision and durability in demanding HVACR and industrial environments. This 2 1 2" dial pressure gauge features a robust painted steel case and a reliable brass socket, ensuring long term structural integrity. Designed with a 1 4" NPT bottom mount connection, it provides a secure fit for standard piping systems. Operating within a 0 60 PSI range, this gauge