An overview of signal words and warning signs used in the text
DANGER
WARNING
CAUTION
An overview of other symbols and abbreviations used in the text
Symbol, designation
AC, DC
ATEX
EPL
IEC
NBR
PA
PE
Glossary of technical terms used
› A hydraulic mechanism
is one in which energy is transmitted via the compressive energy of the working fluid.
› A hydraulic directional control valve
› The volumetric flow rate Q
m
s
, in practice the unit
l/min
3
-1
› The control solenoid
is designed to reposition the valve spool that interconnects or closes the ports in the body. The solenoid consists of
an excitation coil which, by passing an electric current through the winding, generates a magnetic field which exerts a force on the armature of
the mechanical control system.
› Pressure
is the force acting per area unit (SI unit
1. Use of product
The RPEX3-06 hydraulic valve
nominal clearance of DN 06 according to ISO 4401. The product is designed to control the movement direction of the hydraulic cylinder piston rod
or the rotation direction of the hydraulic motor output shaft by connecting the individual channels via a spool in the valve body. By stemming the
fluid flow through the valve spool, the movement of the appliance can be stopped.
Valves with ATEX certification
standards may be used in explosive atmospheres consisting of mine gas, gas or dust. The valves are marked with the CE Ex mark of conformity and
are accompanied by a Declaration of Conformity.
Use in explosive atmospheres:
Class
I, mines, where the explosive atmosphere of mine gas is prodominantly methane
The valve has a high degree of protection (EPL = Mb), which makes iniation unlikely during the interval between gas discharge and valve shutdown.
It is designed for category M2 devices that remain off after gas discharge.
Class
II, where the explosive atmospere consists of gasses other than mine gas
The valve has a high degree of protection (EPL = Gb) which allows the valve to be used in zones 1 and 2. There is a risk of explosion.
The valve is certified for all gas groups - IIA (typical is methane), IIB (typical is ethylene) and IIC (typical is hydrogen).
Class
III, where the explosive atmosphere consists of dust and combustible flammable particles
The valve has a high degree of protection (EPL = Db) which allows the valve to be used in zone 20. There is a risk of explosion.
The valve is certified for all dust groups - IIIA (combustible flying particles), IIIB (non-conductive dust) and IIC (conductive dust).
Area of application:
CLASS I – MINES
CLASS II (IIG) - GAS
Category M1–
NO
Zone 0 -
Categorie M2
(the device remains
switched off)
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Signal word combined with a warning sign used to signify that a dangerous situation which could result in
death or serious injury is imminent.
Signal word combined with a warning sign used to signify a potentially hazardous situation which, if not
avoided, may result in minor or moderate injury.
Signal word combined with a warning sign used to signify the occurrence of a potentially dangerous situation
that could result in death or serious injury if not avoided.
Description of the meaning of the symbol, designation
Designation for alternating (AC) and direct (DC) current, voltage
Explosive Atmospheres
Equipment Protection Level (see EN 60079.0)
International Electrotechnical Commission
Rubber used for the manufacture of seals
Polyamide
Polyethylene
is a valve designed to control the direction of movement or stop the output component of an appliance.
is the amount of liquid in volume units that flows through a given flow cross-section per unit time (SI unit is
is used)
Pascal
(1 Pa = Nm
is a directly controlled, solenoid operated spool valve. The valve body has a connection pattern at the base with a
according to Directive 2014/34/EU and
NO
IIA (methane)
Zone 1
IIB (acetylene)
Zone 2
IIC (hydrogen)
), in practice the unit used is
bar
-2
IECEx
certification according to IECEx OD 009 and related harmonized
CLASS III (IID) - DUST
Zone 20 -
NO
Zone 21
Zone 22
Subject to change_RPEX3-06_14054_1en_03/2022
(1bar = 0,1MPa)
IIIA (combustible particles)
IIIB (non-conductive dust)
IIIC (conductive dust)
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