It is mainly used for well control when surfce layer drilling is operating. It is used together with

hydraulic control system, spool, valve etc., so as to transport the low pressure fluid (liquid, gas) in

well to the apointed safe place in a regular way, ensure the safety for operators and equipments. It

can seal all shapes and sizes of kelly, drilling pipe, drilling pipe sub, drilling collar, casing etc., at

the same time, it can divert and relief the fluid in well.

FFZ75-3.5 Diverter stack (Technical parameters)

* Bore : Φ749.3mm

* Rated working pressure : 3.5MPa

* Control pressure: ≤12MPa (Recommanded≤10.5MPa)

* Stroke length of piston: 355mm

* Scope of capping: Φ127mm~Φ749.3mm

* Max. oil volume for closing: 238L

FFZ75-3.5 Diverter stack (Product features) 

* It adopts the connection method of claw chuck between body and upper housing. So it is convinient for

assembling and removing, it is compact and has a high bearing capacity.

* The hydro-cylinder is single-acting, closed by hydraulic, opened by piston gravity and rubber element elasticity.

* The anti-corrosion measures are taken for all the moving surface, so as to prevent from drilling fluid corrosion

and electrochemical corrosion, improve the performance and prolong the using life.

* The wear plate is mounted on upper housing, so as to prevent the fiction wear between support plate of rubber element and upper housing.

* Body is integrated and totally enclosed.