To be employed while perforation of casing string and wellhead sealing. In emergency cases (uncontrolled flowing) the cable may be automatically cut.

Working medium: oil, gas, gas-condensate, washing liquid, water as well as their mixtures.

Fluid temperature: 0 to +80^оС.

Manually operated.

To be employed in the regions with temperate and cold climate.

Charts of variants Perforation Gate

      

Features and advantages

• Perforation gate is sealed with the use of rubber and Teflon seals.
• When wedges shut off valve bore and working pressure is fed under the wedges, the bore may be opened only when counterpressure is fed upon the wedges.
• When valve is under working pressure, maximum torque at actuator screw necessary to close (open) it is no more than 0.25 kNm.
• While rotating handle clockwise the wedges, that join at inclined plane, shift. Simultaneously the wedges are pressed to the seats, and perforation gate is shut off. When handle is rotated conter-clockwise the holes in the wedges coincide with the seats. Perforation gate is opened.