"B" /"H" EQUALIZING SUB

 

The Type “B” and “H” Equalizing Subs allow an equalization of a pressure differential across a locking mandrel so that the locking mandrel can be safely and properly retrieved. It alsoprovides a means to allow fluid to bypass around a locking mandrel as it is lowered into a landing nipple. A running prong and pulling prong are needed to equalize these subs. The prong lifts a spring loaded equalizing dart off “seat” which will alllow either fluid bypass or pressure equalizing. The Type “B” and “H” subs are identical except the internal diameters of the “H” subs are larger than the “B” subs.

 

SPECIFICATIONS - "B"

  2"  2 1/2" 3"  
O.D. 1.750"  2.150"  2.625"  
I.D. .531"  .719"  1.156"  
Thread Size 1 3/16"-14    1 9/16"-12    2"-12  
Flow Area (sq. in.)     .003"  .003"  .003"  

 

SPECIFICATIONS - "H"

  1 1/2" 2"  2 1/2" 3"
O.D. 1.418"  1.750"  2.150"  2.710"
I.D. .563"  .688"  .875"  1.50"
Thread Size 7/8"-14    1 3/16"-14    1 9/16"-12     2"-12
Flow Area (sq. in.)     .003" .003" .003" .003"

 

ASSEMBLY - "B"

  2”  2 1/2” 3”  
Part Number            20B00200      20B00250      20B00300  

 

ASSEMBLY - "H"

  1 1/2" 2"  2 1/2" 3"
Part Number    20H00150      20H00200      20H00250      20H00300

 

COMPONENTS - "B"

  2”  2 1/2” 3”  
Body  20B01461      20B01462      20B01465  
Valve Spring    90A01457 90A01457 90A01457  
Dart  20A00476 20A00476 20A00476  
Cap  20A00475 20A00475 20A00475  

 

COMPONENTS - "H"

  1 1/2" 2"  2 1/2" 3"
Body 20B01458 20B01459 20B01460 20B01463
Valve Spring    90A01457      90A01457      90A01457      90A01457
Dart 20A00476 20A00476 20A00476 20A00476
Cap 20A00475 20A00475 20A00475 20A00475