ADCA RP45 Installation And Maintenance Instructions Manual

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INSTALLATION AND MAINTENANCE INSTRUCTIONS
GENERAL
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These instructions must be carefully read before any work involving products supplied by VALSTEAM ADCA
ENGINEERING S.A. is undertaken.
•
The installation procedure is a critical stage in the valve life time and care should be taken to avoid damage to
the valve or equipment.
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Reducing valves are designed to give accurate control of down-stream pressures. They give their maximum
performance only when the equipment associated with them is correctly sized and installed in accordance with
our recommendations.
Warning!
- At start up, the presence of small particles in the fluid (dirt, scale, weld splatters, etc) may cause an imperfect
closure of the seat. If this occurs, proceed to an accurate cleaning.
- Do not touch the equipment without appropriate protection during working operation because it may conduct heat
if the used fluid is at high temperature.
- Before starting maintenance be sure that the equipment is not pressurized or hot.
- The equipments must be used within the working temperature and pressure limits laid down for them, otherwise
they may fail (refer to nameplate and/or IS- Information Sheet).
- Do not remove the nameplate attached to the equipment. Serial number and other useful information stamped on
it.
- This valve is not suitable for oxygen service.
INSTALLATION
- Before to installation remove plastic covers placed on flanges or connection ends. The equipment has an arrow or
Inlet/Outlet designations. Be sure that it will be installed on the appropriate direction.
- Take care with jointing material to ensure that none may be permitted to block or enter the valve.
- Reducing valves are recommended to be fitted with the centre line of the valve in a vertical position to ensure that
the best results are obtained.
- An ADCA pipeline strainer should be installed upstream of the valve to protect from dirt which could damage the
valve or cause mal-functioning.
- The reducing valve pipework should be properly supported and free from strain and it should not be subjected to
undue surges of pressure.
For steam installations we strongly recommend that the reducing valve is positioned where condensation is unable
to collect or that, alternatively, separators and steam traps are fitted so that the pipework drains correctly. The
startup condition should be considered.
- A balance pipe must be connected downstream at least 1 meter from valve. See IS.RP45.01.
- RP45 is designed primarily for steam, compressed air and non-inflammable gases. It has limited use for neutral
liquids since the plug close in the same direction of the fluid flow, which can produce vibrations and water hammer
when used at less than 20% of capacity. To avoid this, valve can be installed with the fluid direction against the plug
under certain conditions. Please consult the factory.
At service conditions where the temperature is more than 100ºC it is necessary to protect the diaphragm against
overheating by using a seal pot.
Never size the valve according to the pipe diameter in which it has to be fitted but according to the required actual
flow .Pipe sizing must also respect the maximum recommended flow velocities according to the medium.
ADCA
VALSTEAM
RP45 - PRESSURE REDUCING VALVES
We reserve the right to change the design and material of this product without notice.
ADCA
IMI RP45.02 E 07.16