Parker's check valves optimised for extremes
Posted: 19 August 2003
Metal seating allows operation to +482ºC/900ºF
Parker Instrumentation has launched a new instrumentation check
valve which is optimised for reliable operation at extreme temperatures,
and high pressures.
High integrity is assured by means of a metal seat, allowing safe
operation over an extended temperature range from -148 to +482ºC,
and at pressures up to 6,000PSI CWP (-100 to +900ºF, up to
413 bar).
Fabricated in 316 stainless steel, Parker's LC Series of lift check
valves are available in 1/8, 1/4 and 1/2 inch sizes. Users may also
specify the valves for compatibility with existing systems or preferred
installation practices by choosing from integrated single (CPI)
or twin (A-LOK) ferrule compression tube fittings, or female NPT
pipe thread connections.
The forged body is very compact, and spans only 5.1cm/2inches in
its smallest 1/8 inch implementation.
The new metal-seated check valve is ideal for liquid service applications,
and provides a simple means of adding protection in any system where
back flow or pressure might cause a problem or damage.
The LC Series employs back pressure and a gravity-assisted poppet
to achieve a seal, and prevent flow in the reverse direction to
within 99.9 per cent of forward flow.
The high environmental specification of the LC Series makes the
valves a safe option for handling the temperature extremes found
inside power generation, petrochemical, and chemical processing
plants, within oil and gas transmission facilities, and on laboratory
test and evaluation equipment.
Typical applications include equipment where back flow can cause
contamination, such as analytical instrumentation, and on equipment
which can be damaged by back flow, such as pumping systems.
Further information: http://www.parker.com/ipd.
Background information
Parker Instrumentation manufactures tube fittings, valves, manifolds
and enclosures for process and plant instrumentation for the oil
and gas, petrochemical/chemical, alternate fuels and analytical/high
purity market sectors. Parker Instrumentation has its European HQ
in Barnstaple (UK), and serves customers throughout Europe, the
Middle East and the CIS
For more information see http://www.parker.com/ipd.
The organisation is a division of Parker Hannifin. With annual
sales exceeding $6 billion, Parker Hannifin is the world's leading
diversified manufacturer of motion and control technologies and
systems, providing precision-engineered solutions for a wide variety
of commercial, mobile, industrial and aerospace markets.
The company employs more than 45,000 people in 44 countries around
the world. For more information, visit the company's web site at
www.parker.com,
or its investor information site at www.phstock.com.
Posted by Richard Price,
Editor Pipeline Magazine
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