... their working life.(1) Filtering Grade: 25 μm(2) Proof Pressure: 1.5Mpa(3) Max. Working ... 2", 3/4", 1"2. QAC- F.R.L (Three Combination) (1) All Models: AC2000-01, AC2000-02, AC3000-02, AC3000-02 ... , AC4000-04,AC4000-06, AC5000-06, AC5000-10(2) Metal Protective Hood: ... AC2000-01, AC2000-02 are not available. Others ...