MIDMARK-RITTER Air Vent Solenoid Valve repair kit for the following Autoclaves
M9 020 thru 022 with S/N # prefixes RN, RP, RR & V
M9D 020 thru 022 with S/N # prefixes RW, RX & V
M11 020 thru 022 with S/N # prefixes RS, RT, RV & V
M11D 020 thru 022 with S/N # prefixes RY, RZ & V