API6D High performance pipeline ball valve

Product Description

API6D High performance pipeline ball valve series-RMD-GWB forged steel full weld G type trunnioned ball valve

RMD-GWB full weld ball valve has various kinds of advantages,for example,it is simple in structure,light in weight,high in strength,easy in operation.All the types of ball valves are fire safe in design with no need of maintenance.This type of ball valve has reliable performance,low cost and ling lifespan without malfunction.All these make it an ideal choice for pipeline contractor.
 

RMD-GWB high performance full welded forged steel G type ball valve has its unique features besides the API6D high performance pipeline ball valve advantages.

Unique body structure

The body of RMD-WBG ball valve is full welded,selects high quality forged material,and adopts the advanced forged forming technology to form two semi-spheres which are welded into a whole in the middle of the body.This welding technology differentiates the RMD-GWB ball valve form others,and makes the valve more spherically,so the valve structure is more compacter,lighter and stronger.Besides,the middle direct welding realize highly accurate valve body manufacturing,makes fully and completely sealing between the seat and ball.The full welding instead of bolts completely avoids the outside leakage,so RMD-GWB ball valve is the ideal product for under-ground,offshore working platform and under-sea equipments.

Adopting fixed plates or trunnion to support the ball

The top and bottom of the ball is supported by upper and lower fixed plates or stem and trunnion,and the ball is accurately placed in the center of the ball valve to achieve complete seals and precise movements.When plate adopted,the force exerted by the medium to the ball is distributed via the plate to the left and right bodies,so that the stem does not bear the blending moment from the medium,but only the torque from the ball rotation during the opening/closing of the valve.The low-friction PTFE Teflon composite bearings installed between the ball axis and fixed plate and between the stem and the trunnion can absorb ball moving action caused by the pressure of the medium.This structure brings stable actions and easy operations for the RMD-GWB ball valves,and the required operation torque can be reduced,so smaller actuators can be used,and the cost is cut down.

Unique seat sealing strcutre

RMD-GWB type ball valve seat is floating structure,means the seat can move along the medium direction,so that the seat can fit against the ball all the time.
（Ⅰ）Double piston effect structure seat
Seat design is special double pistons effect structure,it can ensure the seal wherever the medium flows into the ball valve.