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  • Product Kelly Manual Valve - China

    price: contact company for price

    Kelly valve is a manually operated ball type drill stem

    valve; it is divided into upper Kelly valve and lower Kelly

    valve. The upper Kelly valve is connected between lower end

    of swivel and upper end of Kelly; the lower Kelly valve is

    connected between upper end of drill pipe and lower end of

    Kelly or connected between lower end of Kelly saver subs.

    The Kelly valve can be opened on or closed off by only

    turning the special operating wrench at 90° according to

    indicating direction. During drilling operation, the Kelly

    valve shall be connected at upper end and lower end of

    Kelly.

    The sealing principle for Kelly valve is that the ball is

    positioned and provided with proceeding stress by the lower

    seat supported by spring load and a close seal between ball

    and ball seat is provided. During normal drilling operation,

    the hole is kept unblocked by turning the stem to be " on"

    position; In case of kick or blowout, turn the operating

    stem to be " 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 ball

    seat.

    When ordering please specify:

    Upper or Lower type;

    Tool OD;

    Working Pressure: 5, 000 / 10, 000 / 15, 000 PSI;

    Tool connection.


    Company Contact:


    • Phone: 00862131150073

    • Address: No.2999 Xinyang Road,Fengxian District, Shanghai, China

    • Email: Email


    Published date: January 9, 2014 -

    • Business Description: Tianhe Oil Group is a comprehensive enterprise of equipment

      manufacturing and oilfield service providing. The company is specialized

      in innovation, manufacture and sales of drill and petroleum extraction

      tools, equipments and oil field services.

      Tianhe Oil Group is the council member of CPEIA (China Petroleum and Equipment Industry Association), rewarded as national level of Hi Tech enterprise. The company is a Chinese well known trademark enterprise. It has been certified to ISO, API, NS 1, and HSE management system.

      The company has developed a strong domestic sales network covering all oilfields of CNPC, SINOPEC and CNOOC. Currently, our products and equipments have been exported to 45 countries, overseas business has covered 80% of our company sales.

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