Valves are mechanical systems used for controlling the pressure and flow
of liquids slurry and gases within a system. Ball valves Valve Repair plug valves Rexroth
Valves, gate valves Servo Valves,
globe valves, butterfly valve, pinch valve, and disc check valve etc. are some
of the commonly used valves. Valve
Repair is very expensive and thereforeit is very important to carry out
regular and timely preventive maintenance.
Ball valve: Ball valves are often operated asquarter turn valves. The
closure member is spherical in shape and it is a plug with a through hole.When
the through hole is in-line, valve is in open state and water flows through it.
By rotating the globe through ninety degrees, the hole becomes perpendicular to
the flow. The flow of water is stopped. It has a soft circumferential seat so
that tight shut-off is possible. They are not used for maintaining a partially
opened stage. Preventive maintenance is very important to ball valves like Rexroth Valves, Servo Valves etc.
Gate valve: Gate valves are
sliding type valves. In this type of valve, the closingis done with the help of
a metal plate. When the gate slides down the valve is closed. In fully opened
condition, the entire area of the pipe will be the flow area. Therefore, there
is negligible pressure drop in this case. These valves are ideal for using as
on-off valves. They are not suitable for use as throttling valves because in
the partially opened condition there are chances for the gate to be eroded.
These types of valves are very suitable for petroleum industry as they can be
used with metal sealing. Preventive maintenance is very important to ball
valves like Servo Valves, Moog Valves etc.
Plug valves: like ball valves plug valves are also quarter turn valves.
The plug used in this valve can be either conical or cylindrical in appearance.
There is a throughslit that remains in-line withflow when the valve is in open
condition. This slit becomes perpendicular in closed condition. Click here
Valve
Repair
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