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  • Drop In Type Check Valve - China

    price: contact company for price

    Retrievable Drop-In Check Valve provides a means of

    controlling back flow through the drill pipe during a kick

    or when tripping pipe into the hole against pressure.

    The landing sub is installed in the drilling string, usually

    just above the drill collars. The valve is kept on the

    surface until protection from back flow is required. The

    valve is introduced into the drill string and pumped down

    the drill string to the landing sub where it locks into


    Features: Pressure from below the landed valve energizes

    the packer, lock dogs and check valve. The check valve will

    open to allow circulation through the valve and

    automatically close when circulation is stopped. After use,

    the back pressure valve can be retrieved from the string

    with the retrieval tool run in on wire line.


    The landing sub body is manufactured from 4145 heat-treated

    and stress relieved material. Sizes not listed available on


    How to Order:Specify:

    Outer Diameter


    Minimum drill string I.D.

    Non-Retrievable Drop-In Check Valve operates in a similar

    manner as the retrievable valve, with the exception that

    once the valve is landed in the sub, it is not possible to

    retrieve it on wire line. The valve must be removed on the


    Features: Pressure from below the landed valve energizes the

    packer, lock dogs and check valve. The check valve will open

    to allow circulation through the valve and automatically

    close when circulation is stopped.

    How to Order:


    Company Contact:

    • Phone: 8613614631909

    • Address: Dongxu 2st, No.5, Aimin Dis, Mudanjiang , China

    • Email: Email

    Published date: February 10, 2014 -

    • Business Description: Mudanjiang Dongxu Machinery Co.,Ltd has been honored with API spec 7 1

      certificate by America Petroleum Institute. Our factory covers an area

      of 20000square meters with a very strong team of technicians and

      researchers, possesses reliable production lines and advanced


      Our products: drilling tools,fishing tools,coring tools, diamond core bit, milling tools and so on. Our team will manufacture from existing designs or collaborate with the customer to design and manufacture to their specifications.

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