4-port pressure switch for single-phase air compressors, 90-120PSI, with gauges for rapid pressure reduction

4 ports with caps to seal those not needed. Gauge and safety valve included. Piston design; flow rate is 30% higher than the traditional diaphragm type. Pressure range: 0.5-0.8 MPa (5-8 BAR) (90-120 PSI) The valve design features an anti-overflow port for rapid pressure reduction. The air compressor pressure valve switch offers high precision and a fast response. 18.5*10*11cm