High Pressure Kelly Valve for Oil Well Cementing | RFQ Sourcing Details
Belt Conveyors · Quote on request
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Product specs
Buyer's Digest
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Original product description
Kelly cock is also called kelly Cock or drill pipe safety valve. It is a manual control valve in the drilling string circulation system, which is one of the effective tools to prevent blowout. Kelly cock valves are divided into upper kelly cock valves and lower kelly cock valves.
The upper kelly cock valve is used between the lower end of the faucet connector and the kelly. The lower kelly cock valve is used between the lower end of the kelly and the upper end of the kelly. It can be switched by turning 90° according to the instructions with a special wrench.
In the drilling operation, in order to avoid the occurrence of malignant accidents, the kelly cock valve should be installed on the upper and lower ends of the kelly to prevent the loss of drilling fluid and blowout prevention.
The sealing principle for Kelly valve is to ensure a close seat between the ball and the ball seat. The lower seat is supported by a spring.
The force During normal drilling operation, the hole is kept unblocked by turning the stem to "on" position;In case of kick or blowout, turn the operating stem to "off" position to close off the internal bore of drill string, the kick or blowout accident is avoided due to a high pressure sealing situation between ball and the ball seat.
Model OD mm (inch) ID mm (inch) Connection AP1 Working Pressure MPa (PSI) XS 86(3 3/ /16) NC26 BxP ) XS 105(4 1/ /64) NC31 BxP XS 111(4 3/ /64) NC31 BxP XS 121(4 3/ /4) NC38 BxP XS /4) NC38 BxP XS 146(5 3/ /4) 4-1/2REG LH Bxp XS 159(6 1/ /4) NC46 BxP XS 168(6 5/ /16) NC50 BxP XS /16) 5-1/2FH BxP XS 197(7 3/ /8REG LH BxP XS /8REG LH BxP Major repair kits available for every valve.
Comes with certified test report. Identifiable open and close markings. Can be H2S corrosion resistant as per NACE MR0175.
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Key specifications
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- Type
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- size
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- Media
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- Origin
- ChinaBased on visible page data; confirm exact value in the RFQ.
- Actuator
- ManualBased on visible page data; confirm exact value in the RFQ.
- Material
- SteelBased on visible page data; confirm exact value in the RFQ.
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