Circulating Sub OTTM Pin x Box NC-50 AISI 4145H



Circulating Sub OTTM Pin x Box NC-50 AISI 4145H

Circulation Sub is a downhole tool to control flow between the pipe and annulus. Once opened, the downward flow through pipe will be split. Partial of the circulating fluid will flow through the sideway ports to the annulus between wellbore and pipe. 

Preferred Connections

Regular Rotary (REG) Numbered Connection (NC),Full Hole (FH),Internal Flush (IF),Non-Preferred Connections,PAC Connections,Hughes Slim Hole (SH),Hughes Xtra Hole (XH),,Hughes H-90 (H-90),Hughes Slimline H-90 (SL H90),Hughes External Flush (HEF) ,API Specification 11B,Sucker Rod ,Polished Rod