FIELD: machine building.
SUBSTANCE: valve comprises body 1, shutoff ball 10 fixed inside said body 1, hollow rod 8 with seat 11 in top section and radial through channels under sear 11, ball up motion limiter, spring-loaded moving hollow piston 2 arranged at outer generatrix of hollow rod 8 to open and close radial channels 12, 13 of hollow rod 8. Hollow rod 8 is secured by bushing 6 furnished with axial bores 7. Ball up motion limiter is composed by cover 9 with beads while hollow piston 2 has radial channel made at its bottom.
EFFECT: easier start of borehole pump, lower servicing and repair costs, possibility to seal oil-well tubing.
3 cl, 4 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| DOWNHOLE VALVE UNIT | 2011 |
|
RU2455459C1 |
| RETURN VALVE OF ELECTRIC CENTRIFUGAL UNIT AND CLEANING METHOD OF FILTER AT PUMP SUCTION | 2013 |
|
RU2544930C1 |
| VALVE FOR LIQUID PUMPING INTO WELL | 2019 |
|
RU2734286C1 |
| METHOD FOR FLUSHING A DOWNHOLE SUBMERSIBLE PUMP AND A CHECK VALVE FOR IMPLEMENTING THE METHOD | 2022 |
|
RU2786177C1 |
| BYPASS CONTROLLED VALVE | 2020 |
|
RU2730156C1 |
| OIL WELL PUMPING UNIT WITH PACKER FOR EXTRACTING OIL UNDER ABNORMAL CONDITIONS | 2009 |
|
RU2412335C1 |
| HYDRAULIC DEVICE FOR SELECTIVE PROCESSING | 2018 |
|
RU2709852C1 |
| CHECK VALVE OF ELECTRIC CENTRIFUGAL PUMP FOR CLEANING OF SUBMERSIBLE EQUIPMENT FROM PRECIPITATION AND METHOD OF ITS IMPLEMENTATION | 2019 |
|
RU2737750C2 |
| WELL GAS-LIFT UNIT | 1994 |
|
RU2067164C1 |
| METHOD FOR UNDERGROUND WELL REPAIR TO REPLACE SUBMERSIBLE EQUIPMENT AND EXCLUDE INFLUENCE OF WELL-KILLING FLUID ON PRODUCTIVE PLAST | 2016 |
|
RU2623750C1 |
