FIELD: valving.
SUBSTANCE: check valve comprises housing with the seat and valving member composed of seat and shank mad of a cone with ribs. The seat is connected with the shank by means of, e.g., the thread joint. The seat has through passage. The shank is made of a material lighter than that of the seat.
EFFECT: reduced hydraulic resistance.
2 cl, 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| CHECK VALVE | 2006 |
|
RU2317461C1 |
| CHECK VALVE OF ELECTRIC CENTRIFUGAL PUMP FOR CLEANING OF SUBMERSIBLE EQUIPMENT FROM PRECIPITATION AND METHOD OF ITS IMPLEMENTATION | 2019 |
|
RU2737750C2 |
| METHOD FOR CLEANING CENTRIFUGAL PUMP OF OIL WELL FROM PRECIPITATION | 2017 |
|
RU2731007C2 |
| DOWNHOLE VALVE ASSEMBLY | 2004 |
|
RU2275492C1 |
| METHOD FOR UNDERGROUND WELL REPAIR FOR REPLACEMENT OF DOWNHOLE PUMPING EQUIPMENT WITHOUT ACTION ON FORMATION | 2015 |
|
RU2592903C1 |
| CHECK VALVE FOR ELECTRIC SUBMERSIBLE PUMPS FOR HIGH-RATE WELLS | 2021 |
|
RU2780756C1 |
| NON-RETURN VALVE FOR DRILLING STRING | 1996 |
|
RU2107805C1 |
| UNDERGROUND EQUIPMENT WITH DEVICE FOR CLEANING OF SETTLING WELL OF METHANE-COAL HOLE DURING ITS DEVELOPMENT AND MAINTENANCE | 2008 |
|
RU2382176C1 |
| VALVE FOR LIQUID PUMPING INTO WELL | 2019 |
|
RU2734286C1 |
| SLUDGE TANK | 2016 |
|
RU2651658C2 |
