FIELD: sanitary engineering. SUBSTANCE: discharge and pressure cavities of body are separated by partition with through channel. Discharge cavity accommodates adjusting cutoff member connected with operating member while pressure cavity has safety cutoff member flexibly-loaded towards through channel and connected by pusher with operating member. The connection is of the separable type. The pusher is rigidly connected with one of the interconnected members by the safety cutoff member or with operating member, being connected to the other one with a provision for limited reversible movement. EFFECT: improved design. 4 cl, 8 dwg
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