45 100/110 ED
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45 100/110 ED
PERFORMANCES HYDRAULIC SYMBOL
OPERATING PRINCIPLEPRESSURE DROP ∆P-Q
—VR
*
-I valves are one-way check valves cartridge type
construction and can be used in blocks or panels.
— In rest conditions, the valve poppet, which is a cone on
edge seal type, is kept closed by a spring with fixed
setting.
— The poppet opens when the pressure in the intake line “A”
exceeds the set value of the spring, added to any
pressure in the outlet line “B”.
— Available in three sizes for flow rates of up to 300 l/min
and with three different cracking pressures.
– Add the cracking pressure to the values shown
in the diagram.
– Curves measured using mineral oil with
viscosity of 36 cSt at 50°C.
VR
*
-I
CHECK VALVES
SERIES 32
CARTRIDGE TYPE
p max (see table of performances)
Q max (see table of performances)
valve
code
nominal
dimension
maximum
flow rate
[l/min]
mass
[kg]
max operating
pressure
[bar]
continuous peak
VR 2- I 1/4” 50 0,1 320 320
VR 5- I 3/4” 150 0,2
250 320
VR 7- I 1¼” 300 0,8
Ambient temperature range °C -20 / +50
Fluid temperature range °C -20 / +80
Fluid viscosity range cSt 10 ÷ 400
Fluid contamination degree
according to ISO 4406:1999
class 20/18/15
Viscosità raccomandata cSt 25
45 100/110 ED
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DUPLOMATIC OLEODINAMICA S.p.A.
20015 PARABIAGO (MI) Via M. Re Depaolini 24
Tel. +39 0331.895.111
Fax +39 0331.895.339
www.duplomatic.com e-mail: sales.exp@duplomatic.com
VR*-I
SERIES 32
REPRODUCTION IS FORBIDDEN. THE COMPANY RESERVES THE RIGHT TO APPLY ANY MODIFICATIONS.
A
6e
6
H
3
21
- 0,01
- 0,03
- 0,01
-
0,03
C
EG
B
A1
F
A
ø0.1
6H
B
15°15°
A
Max.Max.
0.5x45°0.5x45°
1.6
B
L
M
1.6
A
C
H8
D
1 - IDENTIFICATION CODE
Seals:
omit for mineral oils
V = viton for special fluids
Series No.: (the overall and mounting
dimensions remain unchanged from 30 to 39)
Cartridge type
Nominal dimension:
2 = 1/4” 5 = 3/4” 7 = 1¼”
Cracking pressure:
1 = 0,5 bar 3 = 5 bar 4 = 10 bar
3 - OVERALL AND MOUNTING DIMENSIONS
Check valve
dimensions in mm
V R - I / 32 /
NOTE: the dimension A1 must be at least 1 mm higher than the dimension A indicated in the table herebelow.
2 - HYDRAULIC FLUIDS
Use mineral oil-based hydraulic fluids HL or HM type, according to ISO 6743-4. For these fluids, use NBR seals. For fluids HFDR type
(phosphate esters) use FPM seals (code V). For the use of other kinds of fluid such as HFA, HFB, HFC, please consult our technical
department. Using fluids at temperatures higher than 80 °C causes a faster degradation of the fluid and of the seals characteristics.
The fluid must be preserved in its physical and chemical characteristics.
A B ØC
ØD
max
E F G H L
ØM
max
1 2 3
tightening
torque
VR 2 - I 41 M24x1,5 22 9 10 22 4 14 9 9 OR 119 (15.08x2.62) OR 3068 (17.13x2.62) Parbak 8-115 25 Nm
VR 5 - I 43 M30x1,5 27 15 13,5 26 4,5 12 11 12
OR 3081 (20.24x2.62)
90 Shore
OR 2093 (23.52x1.78) Parbak 8-021 50 Nm
VR 7 - I 72 M45x2 41 21 20 40 7,5 22 16,5 16 OR 3137 (34.60x2.62)
OR 4137 (34.52x3.53)
90 Shore
Parbak 8-220 80 Nm
