F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
F16K35/00—Means to prevent accidental or unauthorised actuation
F16K35/14—Means to prevent accidental or unauthorised actuation interlocking two or more valves
D—TEXTILES; PAPER
D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
D06F39/08—Liquid supply or discharge arrangements
D06F39/083—Liquid discharge or recirculation arrangements