XI 'AN ZZ TOP OIL TOOLS CO.,LTD
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Oilfield Downhole Check Valve 2 7/8" For API ESP Equipment
The check valve is installed about two to three joints above the ESP pump to maintain a full liquid column in the tubing string during equipment shut down period. The check valve is designed and used to prevent backflow through a pump, which uses a seat and plunger to block downward flow in the tubing string.. The check valve is a shuttle type poppet valve arrangement with a spring return. In installation without a check valve, it must be ensured that the tubing string completely drains back to the well through the pump before the motor is started again
Technical Parameter of Check Valve
| Name | Accessory | Material | Remark |
| 2 3/8", 2 7/8", 3 1/2" Check Valve Assembly | Valve Body | 316SS | Thread Standard: API 8RD EUE |
| Circlip for Hole | |||
| Spider Stop. | 316SS | ||
| Valve Clack | Ni-Resist 1 |
