English; Technical Features - Pratissoli S455 Mode D'emploi

= ENGLISH =

FLOW RATE
Q**
MOD.
min - max
l/min g.p.m.(USA)
S455LP
80-500 21-132
S455HP
**
The exact values of Q, SP and WP are stated on the valve plate.
«Translated from original instructions»
THIS DOCUMENT PROVIDES THE INSTRUCTIONS FOR
THE INSTALLATION, USE AND MAINTENANCE OF THE
VALVE, THEREFORE IT IS AN INTEGRAL PART OF
THE VALVE ITSELF AND MUST BE READ CAREFULLY
BEFORE ANY USE AND KEPT WITH CARE.
STRICTLY COMPLY
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 S455 safety valve is a manually-adjustable,
pressure-operated device which, according to its setting,
releases the excess of water when the pressure inside the
pump/system exceeds the adjusted value, thus reducing the
pressure. The normal working conditions can be restored by
turning off and then restarting the system.
The valve has been designed to protect positive-
displacement pumps or components (such as containers
and pipes) of high pressure water hydraulic systems up to
category II.
1.2- Since the S455 valve is used in connection with a high
pressure water pump/system, which shall be called
hereafter only "system", installation and use must be suited
to the type of system used and comply with the safety
Regulations in force in the Country where the valve is used.
1.3- Before installing and using the valve for the first time,
we suggest you check that it is undamaged and make sure
that the rated features correspond to the required ones. If
this is not the case, do not use the valve and contact the
after-sales service of Interpump Group for information.
1.4- Before using the valve, make sure that the system the
valve is used with is certified to comply with the relevant
Directives and/or Regulations.
2- PACKAGE
2.1- Packages must be handled in compliance with the
instructions stated on the packages themselves and/or
provided by the manufacturer.

TECHNICAL FEATURES

SETTING PRESSURE
RANGE
min - max
MPa
6-24 60-240 870-3480
25,4-54 252-540 3654-7830 45
WITH THE INSTRUCTIONS
SP**
bar p.s.i.
2.2- In case the valve is not used immediately, it must be
stored in its integral package and placed in areas which are
not exposed to the weather and protected from excessive
humidity and from direct sunlight. Moreover, it is advisable
to place wooden pallets or other types of pallets between
the package and the floor, in order to prevent the direct
contact with the ground.
2.3- The package components must be disposed of in
compliance with the relevant laws in force.
3- INSTRUCTIONS FOR INSTALLATION:
3.1- The setting pressure (SP) is adjusted and fixed by
sealing by Interpump Group and cannot be changed.
The values of the setting pressure and suggested
maximum working pressure (WP) are stated on the
valve.
3.2- The maximum flow rate depends on the setting
pressure and ranges from 80 to 500 l/min. The exact value
is stated on the valve.
3.3- The setting pressure is the pressure at which the valve
opens, thus determining the maximum pressure value that
the system cannot exceed.
3.4- The installation must be made by qualified and
authorized staff only, who must have the required skills to
handle high pressure systems and be informed of the
operating and
document.
3.5- Tighten the fittings as follows:
G3/4 fitting – torque wrench setting 180 Nm ±5%.
In order to ensure the seal, fit a metal washer with a rubber ring
between the fittings, or use a proper sealant on the thread.
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.
IMPORTANT: In order to effectively protect
the system, we suggest that the valve is
installed close to the pump. Also make sure
of the absence of any on-off devices.
- -
6
WORKING
PRESSURE
WP**
max
MPa bar p.s.i.
20 200 2900
450 6525
safety instructions
TEMP.
MASS
max
°C °F kg lbs
85 185 3,2 7,2
contained in this