EATON Vickers Screw-In Cartridge Valves V-VLOV-MC001-E4 September, 2007H-8
2
3
1
1
2
3
10
15
20
100
200
300
5
0
A
B
Flow – L/min (21,8 cSt oil @ 49 °C)
Flow – USgpm (105 SUS oil @120 °F)
40 60 80 1000 20
10 15 20 25 300 5
Pressure Drop – psi
Pressure Drop
– bar
A - Piloted open port 1 to port 2
B - Free flow port 2 to port 1
RATINGS AND SPECIFICATIONS
Performance data is typical with fluid at 21,8 cSt (105 SUS) and 49˚C (120˚F)
Typical application pressure (all ports) 350 bar (5000 psi)
Cartridge fatigue pressure (infinite life) 350 bar (5000 psi)
Rated flow 114 L/min (30 USgpm)
Cracking pressure @ 1 L/min (0.25 USgpm) 30 - 62-210 bar (900-3000 psi)
50 - 186-350 bar (2700-5000 psi)
Internal leakage 5 drops/min. max. Port 1 to Port 2 @ 77% of crack pressure
Temperature range -40˚ to 120˚C (-40˚ to 248˚F)
Cavity C-12-3S
Pilot ratio 4:1, 10:1
Fluids All general purpose hydraulic fluids such as:
MIL-H-5606, SAE 10, SAE 20, etc.
Filtration Cleanliness code 18/
1166//1133
Standard housing materials Aluminum or steel
Weight cartridge only 0,36 kg. (0.79 lbs.)
Seal kit 02-180095 Buna-N
02-165887 Viton
®
Viton is a registered trademark of E.I. Dupont
Functional Symbol
Sectional View
Pressure Drop Curves
Cartridge only
CBV1/2-12
Counterbalance valve
For 4:1 Ratio
Pilot pressure, =
Cracking pressure + (5 x Port 2 pressure) - Port 1 pressure
4
For 10:1 Ratio
Pilot pressure, =
Cracking pressure + (11 x Port 2 pressure) - Port 1 pressure
10
Description
The CBV*-12 is a 3-ported,
externally piloted, screw-in
cartridge type counterbal-
ance valve.
Operation
The counterbalance valve
allows free flow from port 2
to port 1. Flow from port 1
to port 2 is blocked until
either the predetermined
pressure setting has been
reached or sufficient pilot
pressure has been applied
to port 3 (pilot).
WARNING
For pressure over
210 bar (3000 psi)
use steel housing.
CAUTION
Adjustments
exceeding 350 bar
(5000 psi) may
damage the body.
www.Go2Hydraulics.com
1800-232-0646 (Intl.) +1-206-319-9433
www.Go2Hydraulics.com
1800-232-0646 (Intl.) +1-206-319-9433
EATON Vickers Screw-In Cartridge Valves V-VLOV-MC001-E4 September, 2007 H-9
H
CBV
*
– 12 (V) –
*
–
*****
–
*
–
**
/
**
– 00
1 2 5 6 7 93 10 11 124 8
Model Code
CBV1/2-12
Dimensions
mm (inch)
Torque cartridge in housing:
A - 81-95 Nm (60-70 ft.lbs)
S - 102-115 Nm (75-85 ft.lbs)
1.063”-12 Thd.
Ø 23,75 (0.935)
31,75
(1.2 5)
hex
Ø 22,17 ( 0.873)
13,0 (0.50) hex
3
2
1
70,4
(2.77)
Nom.
75,4 (2.97)
(Nom.
full out)
70,0 (2.75)
(Nom.
full in)
66,8 (2.63)
Nom. full out
53,8 (2.12)
Nom. full in
57, 7
(2.27)
Ø 31,75 (1.25)
nom.
4,0 (0.16 ) hex
Note
Turn screw or knob clock-
wise to reduce pressure
setting and release load.
“C” Adjustment “K” Adjustment “S” Adjustment
Valve function
CBV - Counterbalance valve
Pilot ratio
1 - 4:1
2 - 10:1
Valve size
12 - Size 12
Seals
Blank - Buna-N
V - Viton
Adjustment
S - Screw with locknut
C - Cap over screw
K - Hand knob
Valve body
O - Cartridge only
I - Inline body
B - SAE 4 - Bolt pad
N - Close coupled, nipple
mounting
G - Gasket mounted, single
D - Dual counterbalance,
line mounted
M- Dual counterbalance,
line mounted with
integral shuttle valve
P - Dual counterbalance,
gasket mounted
Valve housing material
A - Aluminum
S - Steel
Free flow crack pressure
A - 2,0 bar (25 psi) (standard)
B - 0,30 bar (4 psi)
(anti-cavitation)
C - 1.4 bar (20 psi) with low
leak pilot *
D - 0.28 bar (4 psi) with low
leak pilot *
* Low leak pilot is only available on
CBV2-**.
Only apply B and D options if required in
your application, these are not preferred
options.
CBV Valves should not be applied with
closed center directional valves.
Pressure range
30 - 62-210 bar
(900-3000 psi)
50 - 186-350 bar
(2700-5000 psi)
Pressure setting
(optional)
(Specified by customer in 100
psi increments) for example:
20 - 140 bar (2000 psi)
35 - 240 bar (3500 psi)
Special features
00 - None
(Only required if valve has
special features, omit if 00)
11
12
10
9
6
5
4
3
2
1
7
Housing port sizes
PORT SIZE VALVE BODY CODES
I B N/G/P D/M
SAE 8 --8T -
SAE 10 10T --10T
SAE 12 12T --12T
1/2" BSPP 4G - 4G 4G
3/4" BSPP 6G ---
SAE-Code 61 6T
For housing part numbers and dimensions see section J.
8
www.Go2Hydraulics.com
1800-232-0646 (Intl.) +1-206-319-9433
www.Go2Hydraulics.com
1800-232-0646 (Intl.) +1-206-319-9433
