FIELD: valving.
SUBSTANCE: valving device comprises housing with flanges, opening and branch pipe for discharging fluid, and control member made of a flexible material. The device is also has input of remote control with the members for interference and mud protection, circuit for remote control composed of two electric valves, pressure drop relay, electric pump, inhibition element, and inverter with powerful outputs, switch amplifier, ring race, central rod, and stiffening rib. The housing is made of two sections. The casing is mounted at the site of the joint between two sections. The central rod is centered inside the casing. The control member is made of Archimedes spiral whose inner end is plugged and outer end is connected with the inner side of the race. The race and housing is provided with opening for supplying and discharging fluid into the space of the control member. The housing has third opening for discharging the fluid from the control member through the members of the remote control.
EFFECT: enhanced reliability.
1 cl, 4 dwg
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