PB Safety Sub

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PB Safety Sub

PB Safety Sub

This sub is designed to easily disconnect tubing from stuck downhole equipment during well operations. 

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  • for formation hydraulic fracturing;
  • for pumping water in injection wells;
  • for oil and gas wells operation;
  • for squeeze cementing and other well operations during which downhole equipment can get stuck.


  • in case equipment gets stuck disconnection is carried out by right hand rotation of the tubing string.


  • connection pressure-tightness is ensured without rubber sealing elements.


Parameter, unit of measurement PB-60 PB-73 PB-89
AХA 6.340.006 AХA 6.340.001 AХA 6.340.003
Maximum inner pressure , (inside the tubing), psi 10000
Dimensions, in, not more than:
- OD 3.07 3.67 4.48
- ID 1.97 2.44 3
- length, ft 1 1 1.11
Weight, lb, not more than 11 15.4 26.45
NUE connection thread* 2 3/8” 2 7/8” 3 1/2”
Top (box)
Bottom (nipple)

* Other threads are available upon request.

Safety subs with different sizes and various connection threads can be manufactured upon customer’s request. 


Dinar Sufiyanov
Dinar Sufiyanov
Director of sales development
+7 (34767) 5-21-01
+7 937 318-87-56
Skype: ved-paker
Timur Minnivaleev, Ph.D
Timur Minnivaleev, Ph.D
Deputy director for external relations
+7 927 468-33-87


E-mail: info@npf-paker.com

E-mail: info@npf-paker.com

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7, Severnaya Str., Oktyabrsky,
Republic of Bashkortostan, 452606, RUSSIA