Timing Accessories
Also available in ATEX version for use in poten-
tially explosive atmospheres in accordance with
94/9/EC Directive
One-way in-line fixed
flow restritors
One-way adjustable flow restritor
Capacity for timing
Flow at 4 bars ? orifice (mm)
Nm 3 /h
0.18  ? 0.30 0.3    white
0.35  ? 0.50 0.4   yellow
0.58  ? 0.77 0.5      red
0.80  ? 1.06 0.6    green
1.10 ? 1.39 0.7     blue
1.45  ? 1.65 0.8     grey
2.30  ? 2.80 1      black
0.08  ? 0.12 0.25 white
10 ? 60 s
81
81
81
81
81
81
81
81
529
529
529
529
529
529
529
529
003
004
005
006
007
008
010
025
-
-
-
-
-
-
-
-
-
-
81 525 101
-
-
-
-
-
-
-
-
-
81 526 001
-
-
-
-
-
-
-
-
-
-
79 458 808
Symbol
Characteristics
Connection
Free flow
Orifice diameter
Operating pressure
Timing
Capacity
Sub-base page 4/14-4/15
Push-in connection for semi-
rigid tubing (NFE 49100)
Operating temperature
Weight
Nl/min
mm
bars
s
cm 3
mm
°C
g
Depending on orifice
Depending on orifice
1 ? 8
-
-
-
?4
-5 ? +50
8
30
0 ? 0.5
1 ? 8
-
-
l
-
-5 ? +50
60
200
0 ? 1.7
2 ? 8
-
-
l
-
-5 ? +50
70
-
-
-
10 ? 60
30
-
?4
-5 ? +50
40
4
Connections
For timing circuit
- One-way flow restrictor 81 525 1 - 81 529 0 (1)
- Reservoir 79 458 018 (2)
- Relay element 81 503 0 - 81 506 0 (3) page 4/6-4/7
Sub-base page 4/14-4/15
(1)
(2)
(3)
Principle of operation
Dimensions
One-way
with fixed flow
One-way
with adjustable flow
81 529
81 525 101
81 526 001
79 452 808
45
115
ATEX version products are available in the following catologues: Pneumatic products for explosive atmospheres or on our website
www.crouzet.com
52
www.crouzet.com
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