Abstract: A foot-operated valve includes a valve set with a hollow seat and a push rod that extends movably and slidably into the hollow seat and that has a bottom end with a plug provided therearound. The push rod is biased so that the plug blocks normally a distal bottom end of a tubular sleeve that is secured in the hollow seat. When downward pressure is applied on the push rod, the plug ceases to block the bottom end of the tubular sleeve to permit communication between outlet and inlet pipe connectors of the hollow seat. A retaining plate is biased by an extension spring so as to engage the push rod when the push rod moves downwardly, thereby maintaining communication between the outlet and inlet pipe connectors even when the downward pressure applied on the push rod is extinguished.

Abstract: A foot-operated valve includes a valve set with a hollow seat and a push rod that extends movably and slidably into the hollow seat and that has a bottom end with a plug provided therearound. The push rod is biased to a first position, wherein the plug blocks normally a distal bottom end of a tubular sleeve that is secured in the hollow seat. When downward pressure is applied on the push rod to move the push rod to a second position, the plug ceases to block the bottom end of the tubular sleeve to permit communication between water outlet and inlet holes of the hollow seat. A control unit is secured to the hollow seat and includes a button retaining seat, a button and a rotary member. The control unit is operable to retain releasably the push rod in a depressed state to maintain communication between the water outlet and inlet holes even when the downward pressure applied on the push rod is extinguished.