2W(UW)brass series water(hot water) gas solenoid valve 2W025-08A 2W-025-08 2W040-10 2W160-15 2W200-20 2W250-25 2W320-32 2W400-40 2W500-50 2W400-40F 2W500-50F 2W400-40K 2W200-20K TOP