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ENGLISH – Translated from original instructions
This manual gives indications for the installation,
operation and regulation of the valve, so it is an
integral part of it and must be read carefully before
any operation and preserved with care.
Strictly comply with the instructions contained in this
document in view of a safe and effective use of the
valve. Failure to comply with these instructions might
cause early faults and result in situations of danger,
in addition to voiding any warranty.
1 GENERAL INFORMATION
1.1 The automatic pressure regulator is a manually-
adjustable, pressure-operated device which, according to
its setting, limits the pump/system pressure by conveying
the excess of water to the by-pass.
Furthermore, when the outlet flow is blocked, completely
exhaust the flow rate leaving the system section after the
valve pressurized and reducing the pressure in the part of
the system that precedes the valve.
2 INSTRUCTIONS FOR PRESSURE SETTING: The
positions mentioned in the following instructions refer to
those shown in the spare parts catalogue (page 2).
3.2- Connect the valve to the water system and follow
these steps:
3.2.1- Unloose the nut pos. 2.
3.2.2- Unscrew the screw pos. 1 in order to completely
release the springs.
3.2.3- Open the gun or the water control device and start
the system. Make sure that the air contained in it is fully
ejected.
3.2.4- Keeping the gun or the water control device open,
start adjusting the pressure by screwing down the screw
pos.1. Alternate the adjusting operations with a few
openings and closings of the gun or of the control device.
When the desired pressure has been reached, open and
close the gun/control device a few times again in order to
stabilize the various components (seals, springs etc.).
Check the pressure value again and correct if necessary.
3.2.5- Screw down the lower nut pos. 2 up to contact and
lock it on the body.
3.2.6- In order to obtain working pressures lower than the
maximum set pressure, unscrew the screw pos. 1.
3- WARNINGS
3.1- As concerns the valves in the 600 bar version, the
outlet fitting shall be suited to the working pressure.
Therefore, we recommend the use of 17 4-PH fittings.
3.2- R3LP – R3XLP In order to optimize the pump-valve
coupling, it is necessary to keep the valve operation range,
as a function of the pump pressure and flow rate, within a
maximum power of 150 kW (205 HP). As shown in the
chart (pag. 4) , this means using pumps producing a flow
rate of approx. 341 l/min. for maximum working pressures
of 23 MPa (230 bar - 3336 psi), and generating a pressure
of approx. 15.7 MPa (157bar - 2277 psi) for maximum flow
rates of 500 l/min.
3.3- R3HP – R3XHP In order to optimize the pump-valve
coupling, it is necessary to keep the valve operation range,
as a function of the pump pressure and flow rate, within a
maximum power of 150 kW (205 HP). As shown in the
chart (pag. 4) , this means using pumps producing a flow
rate of approx. 174.5 l/min. for maximum working
pressures of 45 MPa (450 bar - 6527 psi), and generating
a pressure of approx. 23 MPa (230 bar – 3336 psi) for
maximum flow rates of 341 l/min.
In case of doubts, do not hesitate to contact the after-sales
service of Interpump Group.
IMPORTANT: During use, never exceed the maximum
values of pressure, flow-rate and temperature as
stated in this document and/or indicated on the
valve.
Copyright - The content of these operating instructions
is property of Interpump Group.
The instructions contain technical descriptions and
illustrations that cannot be copied and/or reproduced,
entirely or in part, nor distributed to third parties in any
form and without in any case authorized written
consent of the owner.
Offenders will be prosecuted according to the laws in
force and proper legal actions will be instituted against
them.
The information contained in this document may be
modified without notice.
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