API6D API607 Top Entry Ball Valve , Anti-Fire Forged Steel Ball Valve
Quick Detail:
Size & Pressure : 150# DN150-DN1200
300# DN150-DN1200
600# DN50-DN1200
900# DN50-DN900
1500# DN50-DN600
2500# DN50-DN300
Description:
OUYI TOP ENTRY BALL VALVE is mainly used in pipeline and industry system and it has a top
entry and on line maintenance function.It has a lot of advantages,such as small fluid resistance,
simple structure,small volume,light weight,reliable saaling,convenience for operation and
maintenance,open and close quickly,as well as start and close flexibly.
1.One piece body
One piece body is used for the body to guarantee sufficient strength and rigidity under maximum
rated operating pressure.The internal parts of valve are carefully designed and selected to ensure
reliability under all kinds of operating condition.Enough margin wall thckness and adaptation of
high strength connective bolts are convenient for valve maitenance and sufficiency to support the
stress from piping.
2.Top entry
Its most difference from common ball valve is that its maintenance can be made on pipe line and
without dismounting from the pipe line.The back space seat structure is adopted for the seat and
the rear portion of seat retainer is oblique angle to prevent accumulation of impurity from affecting
back space of seat.
3.Low operation torque
OVIKO top entry series ball valve has a trunnion mounted ball,whose surface is ground,polished
and hard face treated.The ball and stem is integrated,sliding bearing is installed on the external
bore so that the friction radius is small and operation torque is very low.
4.Emergency sealing
Compound injection holes are designed and compound injection valves are installed at locations of
stem/cap and body support of side valve.When sealing of stem or seat is damaged to induce leakage,
the compound can be used to do the second time sealing.A concealed check valve is installed in
side of each compound injection valve to prevent compound from out flowing due to the action of
transmitter substance.The top of the compound injection valve is the connector for fast connection
with compound injection gun.
5.Reliable sealing
The seat sealing is formed by seat sealing and metal retainer component.The seat retainer floats
axially and low pressure sealing of valve seat is reached by pre-pressure of spring.In addition,the
piston effect of valve seat is designed reasonably,which realized high pressure sealing by the
pressure of operating medium and realize the interception of retainer to form the sealing of the body.
The expansion graphite ring is designed to realize sealing under fire condition.
6.Double block&bleed(DBB)
When ball is full open or close position,the transmitter substance in center cavity
