CAT: BFP/VCAR
VUBA
IE/VUBA/002/2012 SHEET: 1/2
4
A
A1
A A1
VUBA08... VUBA12...
A A1
VUBA04... VUBA06...
0
0.5
1.0
1.5
2.0
2.5
3.0
0
510
15 20 25
30 35
40 45 50
04
06
06
0
0.5
1.0
1.5
2.0
2.5
3.0
0
25
50
75 100 125 150
08
12
Ch
Ch
I
G
A
VUBA..11..
VUBA..00..
C
C
L
A
VUBA..12..
A1
A1
C
C
ØM
ØF
ØN
A
A1
E
T
Q
H
C
P
CHECK VALVES FOR PIPES
HYDRAULIC SYMBOL
HYDRAULIC FEATURES
Max. Leakage (0 ÷ 5 drops/min) 0 ÷ 0.25 cm
3
/min
Hydraulic fluid DIN 51524 Mineral oils
Fluid viscosity 10 ÷ 500 mm
2
/s
Fluid temperature -25°C ÷ 75°C
Ambient temperature -25°C ÷ 60°C
Max. contamin. level class with filter ISO 4406:1999 - class 19/17/14
DIAGRAMS FOR “T” ADJUSTEMENT
Code C
Flow
min
(l/min)
Flow
max
(l/min)
Pressure
max
(bar)
E
(mm)
F
(mm)
G
(mm)
H
(mm)
I
(mm)
L
(mm)
M
(mm)
N
(mm)
P
(mm)
Q
(mm)
T *
(mm)
Ch
(mm)
Tightening
torque
(Nm)
Weight (kg)
VUBA..00. VUBA..11. VUBA..12.
VUBA0400..
1/4 BSP 4 25 350 8
0.5 - 0.6
0.8 - 1.0
1.2 - 1.3
1.5 - 1.9
2.0
11 17.5 61 61 2.4 8.5 9.5 5.5 0.2 ÷ 1.0 19 2 0.007 0.07 0.09
VUBA0600 ..
3/8 BSP 6 50 350 10.5 13 23 63 63 3.5 10.5 12.5 5.5 0.2 ÷ 2.0 22 3 0.012 0.10 0.11
VUBA0800 ..
1/2 BSP 16 80 350 12 14 25 72 65 4.5 13 15 7 0.4 ÷ 2.6 27 4 0.023 0.17 0.16
VUBA1200 ..
3/4 BSP 25 150 350 17 17 30.5 104 72 6 16 18 7 0.3 ÷ 2.8 32 10 0.047 0.25 0.21
Distance “T” must correspond to a flow rate of at least 50% top than the set flow.
The flow of checking flow may be ±10% on given curve.
Fluid used: mineral based oil with viscosity 46 mm²/s at 40°C.
Setting T (mm)
Setting T (mm)
CHECK VALVES
Checking flow Q (l/min)Checking flow Q (l/min)
The pipe-pressure check valve is fitted directly on cylinder connections to pre-
vent uncontrolled drops due to system faults.
Supplied on request with a flow reducer hole F on the plate to enable leakage
from A1 to A and allow the load to drop slowly.
Steel body and plate. Seal surfaces lapped.
* Specify distance “T” with decimal progression. Standard distance “T” is 0.5 mm (for 1/4 and 3/8 BSP valves) and 0.7 mm (for 1/2 and 3/4 BSP valves).
Response flow depends on distance “T” see “T adjustment curves”.
Page: 48
HOME INFO VALVES INDEX
CAT: BFP/VCAR
VUBA
IE/VUBA/002/2012 SHEET: 2/2
4
ØD
L
L1
L 2
SEDE
C H (mm)
1/4 BSP 11
3/8 BSP 11
1/2 BSP 15
3/4 BSP 16
VUBA04... VUBA06... VUBA08... VUBA12...
A
A1
A A1 A A1A A1A A1
Q (l/min)
P(bar)
0
1
2
3
4
5
6
7
8
0
12
24 36 48
60 72
84
T= 0.5
T= 1
T= 1.2
Q (l/min)
P(bar)
0
1
2
3
4
5
6
7
8
0
510
15 20 25
30 35
T= 0.5
T= 1
T= 0.2
Q (l/min)
P(bar)
0
1
2
3
4
5
6
7
8
0
816
24 32 40
48 56
T= 0.5
T= 1
T= 1.2
T= 2.0
T= 0.2
Q (l/min)
P(bar)
0
1
2
3
4
5
7
6
8
0
25
50
75
100 125 150
175
T= 0.5
T= 1
T= 2.5
T= 1.5
C
H min
VUBA ** ** T*** F**
KEY FOR TIGHTENING VALVE
SEAL
CHECK VALVES
FLOW PRESSURE DROP ACCORDING ADJUSTEMENT “T”
Code
key
For
valve
D
(mm)
L
(mm)
L1
(mm)
L2
(mm)
AVA184
VUBA04.. 11.3 120 110 60
AVA186
VUBA06.. 15
120
110 80
AVA188
VUBA08.. 18.8 120 108 80
AVA1812
VUBA12.. 24 120 108 80
Diagrams flow pressure drop according adjustement length of “T”
ORDERING CODE
SERVICE EXAMPLE
Series
Size
Versions
Setting T
Hole on
the plate
VUBA = Check valve
04 = 1/4 BSP
06 = 3/8 BSP
08 = 1/2 BSP
12 = 3/4 BSP
00 = Cartridge only
11 = Complete valve M/F
12 = Complete valve F/F
01 = Only column M/F
02 = Only column F/F
Standard, without hole (omit code)
Special holes (1)
05 = 0.5 (mm)
06 = 0.6 (mm)
08 = 0.8 (mm)
10 = 1.0 (mm)
12 = 1.2 (mm)
13 = 1.3 (mm)
15 = 1.5 (mm)
19 = 1.9 (mm)
20 = 2.0 (mm)
Standard settings (omit code)
0.5 mm for dimensions 04-06
0.7 mm for dimensions 08-12
Special settings (2)
020 ÷100 = 0.2 ÷ 1.0 mm for dimension 04
020 ÷200 = 0.2 ÷ 2.0 mm for dimension 06
040 ÷260 = 0.4 ÷ 2.6 mm for dimension 08
030 ÷280 = 0.3 ÷ 2.8 mm for dimension 12
NOTE:
(1-2) Special, minimum 100 pieces.
(2) Specify distance “T” with decimal progression (e.g. T020 = 0.20 mm).
Page: 49
HOME INFO VALVES INDEX
