EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 E-230.A
An Eaton Brand
E
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
RV3-12 - Relief Valve
Poppet, direct acting, differential area
132 L/min (35 USgpm) • 350 bar (5000 psi)
Operation
This valve remains closed
from port 2 to 1 until the
predetermined setting has
been reached at port 2.
The pressure acts on the
differential area between the
seat and the seal diameter on
the poppet.
Features
Hardened and ground working
parts. Low leakage poppet
design. High flow rate for a
compact cartridge.
Performance DataSectional View
Description
This is a fast, direct acting
differential area screw-in
cartridge relief valve. The valve
is ideal for the protection
against shock pressures that
can damage actuators.
Pressure Drop Curves
Inlet pressure - bar
A - 40 spring
B - 22 spring
C - 8.5 spring
D - 2.5 spring
Flow - USgpm (105 SUS oil @120˚F)
Pressure Drop - psi
500
1000
1500
2000
2500
3000
3500
4000
4500
5000
0
0 5 10 15 20 25 30 35
Flow - L/min (21,8 cSt oil @ 49˚F)
35
70
105
140
175
210
245
280
315
350
0 19 38 60 76 95 114 132
A
B
C
D
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 132 L/min (35 USgpm)
Cracking pressure ranges 3,4-275 bar (50-4000 psi)
Temperature range -40° to 120°C (-40° to 248°F)
Cavity C-12-2 or C-12-2U
Fluids All general purpose hydraulic fluids such as:
MIL-H-5606, SAE 10, SAE 20, etc.
Filtration Cleanliness Code 18/16/13
Standard housing materials Aluminum or steel
Weight cartridge only 0,49 kg (1.08 lbs)
Seal kit 02-165889 (Buna-N)
02-165888 (Viton
®
)
Viton is a registered trademark of E.I. DuPont
Endurance tested to 1 million cycles at full rated flow and pressure.
2
1
2
1
EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 E-231.A
An Eaton Brand
E
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
RV3-12 - Relief Valve
Poppet, direct acting, differential area
132 L/min (35 USgpm) • 350 bar (5000 psi)
95.4
(3.75)
“2”
“1”
44.7
(1.76)
1-1/16 - 12UN - 2A
1-1/4 HEX
Adjustment Code C
Ø 23.73 - 23.77
(.934 - .936)
Model Code
RV3 12 (V)
*
(
*
)
***
(U)
**
/
** **
1 2 3 4 5 6 7 8 9 10
1 Function
RV3 - Relief valve
2 Size
12 - 12 size
3 Seal Material
Blank - Buna-N
V - Viton
®
4 Adjustment
C - Cap
K - Knob
F - Factory set
S - Screw
5 Valve Housing Material
Omit for cartridge only
A - Aluminum
S - Steel
6 Port Size
Code Port Size Housing Number
C-12-2 C-12-2U C-12-2 C-12-2U
Aluminum Aluminum Steel Steel
Fatigue rated Fatigue rated Fatigue rated Fatigue rated
4G 1/2" BSPP 30189-1 30189-2 30915-1 30915-2
6G 3/4" BSPP 31090-1 31090-2 30916-1 30916-1
10T SAE 10 31087-1 31087-2 30913-1 30913-2
12T SAE 12 31088-1 31088-2 30914-1 30914-2
See section J for housing.
7 Cavity
Blank - Cavity without
undercut
U - Cavity with undercut
8 Cracking Pressure Range
Note: Code based on pressure
in psi.
2.5 - 3,4-17 bar (50-250 psi)
8.5 - 13-55 bar (200-850 psi)
22 - 20-150 bar (300-2200 psi)
40 - 40-275 bar (600-4000 psi)
9 Setting Pressure
Within ranges in
8
Blank - Normal factory
setting at approximate
mid-range.
Optional - User requested
settings in 3,45 bar (50 psi)
steps, Coded as in the
following examples:
10 - 70 bar (1000 psi)
10.5 - 72,4 bar (1050 psi)
10 Special Features
00 - None
(Only required if valve has special
features, omitted if "00.")
•
WARNING
Aluminum housings
can be used for
pressures up to 210 bar (3000
psi). Steel housings must be
used for operating pressures
above 210 bar (3000 psi).
Dimensions
mm (inch)
Torque cartridge in housing
A - 81-95 Nm (60-70 ft. lbs)
S - 102-115 Nm (75-85 ft. lbs)
Installation Drawing (Steel)Cartridge Only
– – – – – – – –
12.7
(0.50)
63.5
(2.500)
63.5
(2.500)
88.9
(3.50)
88.9
(3.50)
28.7
(1.13)
12.7
(0.50)
2 X Ø 10.31
(0.46)
25.4
(1.00)
50.8
(2.00)
1
2
95.4
(3.75)
