Industrial BD034-0242RP Pressure Switch 125 PSI 4 Port

BD034-0242RP is a four-port bleeder pressure switch for air compressors that toggles the motor on and off at a set PSI to maintain steady pressure and efficient cycling. It is listed with a nominal operating range of 95–125 psi and is sold as a Black Diamond replacement part (also appearing under Powermate branding) with a 1/4" male fitting. The unit measures about 4.88 in long, 3 in wide, and 9.5 in high, and it weighs roughly 0.06 lb, making it a compact, lightweight upgrade for standard single- or multi-stage compressors. Its four ports with an integrated bleeder provide the plumbing and adjustment options commonly used to fine-tune cut-in and cut-out pressures, helping the system reach the desired operating range efficiently and reduce undesired short cycling.