Johnson Controls P74AB-1 Pressure Control Freon the 650SV prevents nuisance shutdowns

the 650SV prevents nuisance shutdowns caused by surging or foaming water

offering a seamless fit for contractors performing maintenance on 2-way valve assemblies

For technicians performing furnace board troubleshooting

Easy Diagnostics: Features a dedicated 1/4" Schrader valve port for direct attachment of a pressure gauge for accurate setpoint verification

Operating with a 24V coil voltage

Johnson Controls P74AB-1 Pressure Control Freon the 650SV prevents nuisance shutdownsJohnson Controls P74AB 1 Differential Pressure Control, SPST, Open on Pressure Increase, 8 Psi to 70 Psi, Manual Reset, Ammonia Use P74AB 1 is identical to P74AB 1C