
INSTALLATION AND MAINTENANCE INSTRUCTIONS
INSTRUCTIONS D’INSTALLATION ET DE MAINTENANCE
INBETRIEBNAHME - UND WARTUNGSANLEITUNG
INSTRUCCIONES DE PUESTA EN MARCHA Y MANTENIMIENTO
INSTRUZIONI DI MESSA IN SERVIZIO E MANUTENZIONE
ALGEMENE INSTALLATIE- EN ONDERHOUDSINSTRUCTIES
520
Spool type control valve
X52052598300100
ATEX zone 1-21
EN
FR
DE
ES
IT
NL
520
ADAPTATION ON
THE BASE
Attaching the
distributor onto
(I)
the base by 2 M3
Flat seal
between base
(II)
and distributor
EN FR DE ES
screws
ADAPTATION
SUR EMBASE
Fixation du
distributeur sur
embase par 2 vis
M3
Joint plat entre
embase et distri-
buteur
ANPASSUNG AN
DIE BASIS
Befestigen des
Verteilers an der
Basis mit 2 M3-
Schrauben
Flachdichtung
zwischen Basis
und Verteiler
ADAPTACIÓN EN
LA BASE
Conexión del
distribuidor a la
base mediante 2
tornillos M3
Junta plana
entre la base y
el distribuidor
+L,
A
IT NL
ADATTABILE
SULLA BASE
Fissaggio del
distributore sulla
base con 2 viti M3
Guarnizione piatta
fra la base e il
distributore
q
AANPASSING
OP DE BASIS
Verdeler beves-
tigen aan de basis
met 2 M3schroeven
Vlakke afdichting
tussen basis en
verdeler
F
items N.m
A 1±0,5
526807-001 / A
2 3
Availability, design and specifi cations are subject to change without notice. All rights reserved.
+LL,
4 x Ø4,5
M3
G 1/4
526807-001526807-001

520
q
PNEUMATIC CONTROL SPOOL VALVE, THREADED BODY G 1/8
GENERAL INFORMATION
This installation and maintenance instruction sheet refers to the pneumatic control spool valve X52052598300100,
ATEX zone 1-21.
This component is not a security accessory. It is only designed for use that is compliant with, individual or integrated into devices of machines and installations.
DESCRIPTION
This pneumatic control spool valve X52052598300100 is envisaged for use in explosive atmospheres in the form
of gas, steam, mists and dust.
This product complies with the directive ATEX 2014/34/EU
The classifi cation into zones 1-21 is defi ned by the following markings II2GD IIC T85°C (T6) X
Compliance with essential health and safety requirements is guaranteed by conformity to the European Standard
EN 13463-1: 2009
!
#
SPECIAL CONDITIONS FOR SAFE “X” USAGE:
Ambient temperature range: +5°C to +50°C
SPECIFICATIONS
Fluids: Air or gas - neutral, fl uid, lubricated or not
Connection: G1/8
Working pressure: 1.5 to 8 bar (differential return)
Control pressure: 1.5 to 8 bar
Flow (qv at 6 bar) : 600 l/min (ANR ) - Kv : 8.5
Risk from electrostatic charges:
For the IIC Group, prevent electrostatic charging of external insulating surfaces by using the appropriate installation and cleaning measures. To clean external insulating surfaces use a damp cloth.
Connect the assembled product to the earth.
When assembling the distributor on the base, ensure that all metallic and conductive parts are always interconnected and linked to the earth to avoid signifi cant electrostatic charges being created.
The earth is connected to the assembled product by the downstream and upstream use of metal pipes connected
to the earth. If the pipes are non-conductive, earth connection should be performed by the fastening screws on
the base on a support adapted to the ATEX products.
Installation, commissioning and servicing and maintenance
These operations may only be carried out by authorised personnel and in accordance with the usage instructions.
Only carry out maintenance in zones where there is no explosive atmosphere.
If during maintenance it is established that wearing and spare parts need exchanging, contact an ASCO
Numatics reseller.
Any modifi cation of the product with parts not supplied by the manufacturer will invalidate the certifi cation.
PNEUMATIC PILOT
This distributor is envisaged to receive an electropneumatic pilot compliant with the ATEX Directive in accordance
with ISO 15218 -CNOMO size 15.
The special conditions for a safe use of the mechanical part are the same as those for the pneumatic version.
For the electrical part refer to its technical instruction notice of the pilot.
The assembly comprises components which are individually certifi ed (mechanical and electrical). Therefore assembly
comprised in this way does not generate any additional risk. Each component has a stamp which is bespoke to
that component and the assembly category corresponds to the most unfavourable category of one of the
components of the assembly.
ADAPTABLE ON THE BASE
SERIES 520-ATEX Zone 1-21
q
EN
4 5
526807-001526807-001