Precision Shaft Design: The 3/8-inch diameter shaft is optimized for secure coupling to diverse HVAC blower components

The 196688 is calibrated to specific factory standards

including popular D7CG and DF048 series packaged units and B1HN gas furnaces

provided the fitting sizes match the unit’s specifications

Parker Watts Fluid Air B35-02WHC Regulator 321702-401 Precision Shaft Design: The 3/8-inchThe Parker Watts B35 02WHC is a professional grade integral filter regulator engineered for precise pressure management and contaminant removal in pneumatic circuits. Part of the rugged B35 series, this 1 4" NPT filter regulator is built with a zinc body and a 1. 5 oz zinc bowl featuring a sight glass for immediate condensate monitoring. It manages a maximum inlet pressure of 250 PSI, delivering a reduced pressure range of 0 125 PSI with a 35 SCFM max