Blowdown valve with ring seat, washing machine coupling, nonreturn screw valve and antireflux valve. Blowdown valve with ring seat, washing machine coupling, nonreturn screw valve and antireflux valve. Code A B C D E F 10023_904 95 70 85 1/2″ 44 11 Related Posts Union valve for washing machine chrome plated with nonreturn screw valve Union valve for washing machine chrome plated with nonreturn screw valve Union valve for washing machine chrome plated with nonreturn screw valve