Inside Bop

Inside BOP

  • Available with a wide variety of sizes and end connections.
  • Two piece body with full drift bores.
  • Operating wrench and thread protectors included.
  • 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.

Description

Inside Bop

The Inside BOP is a non-return valve (check valve), also called Gray Valve or BVR, is a back pressure valve used in the drill string to prevent the well from flowing uncontrollably up the drill string.

It is used to hold the tool open therefore it is possible to stab the valve while the fluid is flowing through the drill pipe. With the Inside BOP valve installed in the drill string, it allows you to strip in hole without mud flowing through the drill sting. The Inside BOP valve should not be used for shut the well in while tripping.

We produce H2S resistance Inside Bop Valves, which adopt high quality import sulfur-resistance material.

Inside Bop

Thread connection O.D.
mm(inch)
I.D.
mm(inch)
OAL
mm(inch)
Working pressure(Mpa)
NC26 88.9 (3-1/2) 31.75 (1-1/4) 686 (27) 70 (35)
NC26 95 (3-3/4) 35 (1-3/8) 660 (26) 70 (35)
NC31 104.8 (4-1/8) 41.3 (1-5/8) 711 (28) 70 (35)
NC31 111 (4-3/8) 35 (1-3/8) 670 (26-3/8) 70 (35)
NC38 120.1 (4-3/4) 50 ( 2 ) 462 (30) 70 (35)
NC38 121 (4-3/4) 45 (1-49/64) 685 (26-31/32) 70 (35)
NC46 158.75 (6-1/4) 61.9 (2-7/16) 838 (33) 70 (35)
NC50 159 (6-1/4) 57.2 (2-1/4) 760 (29-59/64) 70 (35)
NC50 165 (6-1/2) 57.2 (2-1/4) 760 (29-59/64) 70 (35)
NC50 168.28 (6-5/8) 71.4 (2-13/16) 838 (33) 70 (35)
5 1/2FH 177.8 ( 7 ) 76.2 ( 3 ) 889 (35) 70 (35)
HT55 177.8 ( 7 ) 57.2 (2-1/4) 998 (38-57/64) 70 (35)
6-5/8REG 203.2 ( 8 ) 76.2 ( 3 ) 965 (38) 70 (35)
6-5/8REG 203.2 ( 8 ) 71.4 (2-13/16) 998 (38-57/64) 70 (35)
7-5/8REG 241(9-1/2) 71.4 (2-13/16) 998 (38-57/64) 70 (35)
7-5/8REG 241(9-1/2) 76.2 ( 3 ) 965 (38) 70 (35)

 

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