Specifications

Back-pressure valve
1.API standard
2.Practical National Patent Certificate
3.new-style inside BOP

Back-pressure Valve

 

Nera back-pressure valve is according to API standard and achieved the National Utility Model.

Floating valve is a new-style blowoutpreventer within the drill. The valve is open through which the drill fluid can circulate when drilling goes normally. The valve will close to prevent blowout when well kick or blowout happens.

It can effectively prevent drill fluid flowing back and prevent sands flowing into the drill pipe to avoid blocking up. It is a specific tool for blowout preventing in drilling.

The structure of floating valve is so scientific that it can avoid corruption and short lifetime which are the common problems of their kind to insure of the protection in the whole procedure of drilling.

 

Size (mm)	DC size	Effective length (mm)	Bearing pressure (MPa)	Connection
FJ105	4-1/8”	510	70	NC31
FJ121	4 -3/4″	500	70	NC38
FJ165	6- 1/2″	700	70	NC46/NC50
FJ172	6 -3/4″	700	70	NC46/NC50
FJ178	7″	700	70	NC50
FJ203	8″	750	70	NC56/6-5/8REG