2011-01-19
High pressure ball valves are used in hydraulic, pneumatic,
steam, oil and gas, and high pressure fluid applications. They are also
used for coating, painting and electro-coating in numerous automotive
assembly plants. High pressure ball valve regulates the flow of a fluid
by opening or closing it. Hydraulic valves are used in power steering,
break system and the transmission of the car. Graders, front-end
loaders, dump trucks, cranes and more are also using hydraulic lines. In
the factories hydraulic ball valves are used for lifting, pressing,
positioning and formatting their products.
Areas of Usage
Pneumatic ball valves are used in sewage treatment, paper making,
environmental protection, power station, oil refining, chemical,
fertilizer, mining, metallurgy and urban construction etc. They are also
used in steel plants, cement plants, power plants, pulp and paper
mills, sugar mills, process plants, material handling equipments, waste
water treatments etc.
High pressure ball valves are used in PowerStation’s for
high-pressure water and steam isolation duties which makes the valve
easy to operate. Steam service ball valves can reduce lost energy, down
time and safety hazards associated with leaking valves in a steam
system. They resist the erosive nature of steam, thus improving
performance and enhancing safety.
Negative Side
Ball value residues are another problem faced by most of the
industries using high pressure valves. When it is used in fluids for
consumption such residues are likely to cause health hazards too. In
cases where fluid change is required over time contamination can also
occur by mixing of one fluid with other or with residues. Residue comes
when in the half open ball valve creates a gap in between body and ball
bore where fluid will be trapped. Such a cavity needs to be plugged for
avoiding fluid collection. This can be easily done in high pressure
valves by extending seats in a way that it is in contact with ball
always which is another added advantage. High pressure ball valve is one
of the most important items in a fluidic system. It controls the
insufficient flow at design conditions.
Usually when used in a pipeline valve used will be a bit smaller or
one pipe size smaller than the pipe in which valve is placed. Thus the
flow area will be smaller than the pipe. In such a case as the flow
discharge is constant and as both valve and pipe are of similar size
discharge will be equal to the area of flow too. In such a case the
velocity can be reduced by reducing the area of flow which is another
added advantage of high pressure valves.
Method Used
High pressure valve works on the principle of floating ball. This
system will be helpful in turning the ball in between the seals of ball.
This type of valves will ensure free and unrestricted complete flow. It
also ensures a positive shut of when used for gases or fluids when an
extreme condition requires so. For this valve ensures so much safety it
is usable with highly risky elements like petroleum products, oils and
gases. It can be used with water glycol as well. Usually oil industry
and gas power generation industries use this kind of valves while even
mining as well as sewage or water reticulation industries use this type
of valve to ensure safety.
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