ArrowBack Pressure Valve:

 Arrow Back Pressure Valve is an integrated tool which can prevent downholekick from blowout,also keep off  theblowout accident. Thus reducing mud loss and ensuring a clean rig floor.Comparedwith the other back pressure calve,it possessed the advantage of highstrength,high pressure-resistant,safety and reliable,etc.

Arrow type back pressure valve is animportant tool preventing of blowout. The design of the arrow type backpressure valve allows for an on-site determination of back pressure to be setat surface.

The tool should be connected toneeded drilling position in operation.Under normal drilling condition,drillingliquid pass through valve body and water channel to furnish downward.Whenhappened well kick and blowout, underground pressure impel valve body to moveupward 14° pyramidal face of valve body isfitted tightly against gasket pyramidal face,they can prevent drilling liquidwithin the drilling from gushing and blowout upward.