Basic design

• To be "rigged up" at the very top of the pressure controlstring, in conjunction with 12" thru 16" diameter sheave wheel & bracket assembly (not shown).
• Design allows for leakage around line to be minimized by increasing pressure on internal seal inserts, this is accomplished by simply tightening the external hex-top pressure nut.
• If remote operation is required, unit is avalable with hydraulic operation package (hand pump also required).
• Unit also incororates an internal safety blow-out gland to effectively seal off well bore pressure in the event of
  a "pull-off".
• Also available with optional grease injection port.