Interstate Pneumatics PW7162 3/4" Female GHT x 1/2" Male NPT Inline Water Filter. Add longer life and durability to your pressure washer valves and seals. This Brass Filter will make sure your pressure washer operates for a long time. Features cleanable stainless steel metal screens that never needs to be replaced. One end is 3/4" female GHT threads, the other end is 1/2" MNPT (brass).