Blowout preventer stack consists of annular blowout preventer, single and double ram blowout preventer and drill spool. It can meet the requirements of land and offshore platform drilling. It has reasonable structure and superior sealing and its basic technical parameters conform to API 16A.

F28-70 Blowout Preventer Stack

• The annular blowout preventer use spherical rubber packing with lower operation pressure and more effective in shutting off the well.

• The piston of annular blowout preventer is positioned low so only moves a short distance, beside it has wear resistant ring protector to keep it from abrasion.

• Ram blowout preventer using inner flow, the loading chain is separated from hydraulic chain. Ram blowout preventer has a floating ram. There are higher support ribs at the bottom of the Ram chamber and sand slots slanting to well bore.

•  Ram blowout preventer can be connected in many different ways according to customers’ choices. The sizes of side outlet and the ways connection of Ram blowout preventer can meet different requirement of customers.

• The flange grooves of blowout preventer and Drill Spool are stainless steel lined.   

F35-70 Blowout Preventer Stack

• The annular blowout preventer use spherical rubber packing with lower operation pressure and more effective in shutting off the well.

• Ram blowout preventer using inner flow and floating ram. The flange grooves of blowout preventer and Drill Spool are stainless steel lined.

• The rubber packing unit on the annular blowout preventer is changeable with similar products made by

• Ram blowout preventer can use same type of rams which made by oversea producer.

• Ram blowout preventer can be connected in many different ways according to customers’ choices.

• The sizes of side outlet and the ways connection of Ram blowout preventer can meet different requirement of customers.

F35-105 Blowout Preventer Stack

• The annular blowout preventer use spherical rubber core with characters of massive storing volume, little force of friction while opening and closing, excellent well sealing features and being changeable with similar products made by oversea producers.

• The bonnet of annular blowout preventer is hemispherical shaped, no stress concentration while under pressure endured by the body can be evenly distributed.

• The piston of annular blowout preventer is positioned low so only moves a short distance, beside it has wear resistant ring protector to keep it from abrasion.

• The body and side door of Ram blowout preventer id made from alloy steel. Assembly seal rings with excellent well sealing features are used to seal the side door of Ram blowout preventer.

• With floating ram, the foreside rubber core of the Ram blowout preventer is separated from the top one so that it is more reliable in sealing function and easy to change with another.

• Ram blowout preventer using inner flow, the loading chain is separated from hydraulic chain.

• Two sides of the body chamber of Ram blowout preventer are arc-shaped as well as the transition of four corners so that they can reduce the maximum pressure the body endure.   

• The flange grooves of blowout preventer and Drill Spool are stainless steel lined.