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On-off valve
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This product is recognized by UL. Representative samples
of this component have been evaluated by UL and meet
applicable UL requirements.
UL approval information
Product category code
YIOZ2 (USA),
YIOZ8 (Canada)
File number
MH19482
Considered standards
UL 429,
C22.2 No.139
UL mark
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Fitting and commissioning is to be carried out by quali-
fied personnel only in accordance with the operating
instructions.
Such qualified personnel must have several years of
training and experience in installing and commissioning
electrical and pneumatic industrial control systems.
• Please observe the applicable safety requirements
and standards.
Conversion or extension of the product with modules,
for which the Recognized Component Mark of UL does
not apply, will lead to loss of the UL certification.
• Contact Festo if you require information on UL-certi-
fied modules.
Technical data
Operating medium
Air or inert gas
Temperature range (ambient,
-10 ... +50 °C
medium)
(+14 ... +122 °F)
Operating pressure differential
4 ... 10 bar
range
(0.4 ... 1.0 MPa, 58 ... 145 psi)
External body pressure range
4 ... 10 bar
(0.4 ... 1.0 MPa, 58 ... 145 psi)
Eletrical (for each seperate pilot
24 V DC NEC Class 2 only,
valve)
max. 1.5 W
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Only for connection to a NEC Class 2 supply
Raccorder Uniquement a un circuit de Classe 2
This device is intended to be used with a Class 2 power
source or Class 2 transformer in accordance with UL1310
or UL1585.
As an alternative a LV/C (Limited Voltage/Current) power
source with one of the following properties can be used:
– This device shall be used with a suitable isolating
source such that the maximum open circuit voltage
potential available to the product is not more than
24 V DC and the current is limited to a value not exceed-
ing 8 A measured after 1 minute of operation.
– This device shall be used with a suitable isolating
source in conjunction with a fuse in accordance with
UL248. The fuse shall be rated max. 4 A and be installed
Note
in the 24 V DC power supply to the device in order to
limit the available current.
Note that, when more than one power supply or isolating
device is used, connection in parallel is not permitted.
Extracts )* from the UL report:
Conditions of acceptability:
In determining the acceptability of these valves in the
end-use, the following shall be determined:
– These valves are to be factory installed within a suitable
housing or mounted in a guarded and protected loca-
tion to prevent accidental contact in end-use product
since the Impact Test was not performed.
– The valve leads/connectors/terminals are intended to
be factory-wired only.
– The suitability of any mating fluid connector must be
determined in the end product.
– These valves are intended to be used on a regulated
pressure system with the maximum ratings as noted
under "Technical data".
– These valves are intended to be used in conjunctions
with air tubes with following outside dimensions:
Factory port Air tube
Size thread
1,2
12
G1/2
3
12
G1/2
)* taken over essentially without important changes
en
Torque (Nm)
15
15
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