4-circuit-protection valve, M16 x 1,5, M22 x 1,5, max. 20 bar, Po21: 7 bar, Po22: 7 bar, Po23: 7.3 bar, Po24: 7 bar, Pc21: 5 bar, Pc22: 5 bar, Pc23: 5 bar, Pc24: 5 bar 6.65054