EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 E-240.A
An Eaton Brand
E
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
A - 50 spring
B - 25 spring
C - 12 spring
D - 4 spring
Flow - USgpm (105 SUS oil @120˚F)
Pressure Drop - (PSI)
1000
2000
3000
4000
5000
6000
70
140
210
280
350
420
0
0
Pressure drop - bar
Flow - L/min (21,8 cSt oil @ 49˚F)
0
5
19
10
38
15
60
20
76
25
95
30
114
35
132
40
151
A
B
C
D
Ratings and Specifications
Performance data is typical with fluid at 23,3 cSt (111 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 Range 3,4-275 bar (50-4000 psi)
Internal leakage 0.3 mL/min (5 drops/min) @ 85% of Pressure Setting
Cavity C-12–2 or C-12–2U
Standard housing materials Aluminum or steel
Temperature range -40° to 120°C (-40° to 248°F)
Fluids All general purpose hydraulic fluids such as:
MIL–H–5606, SAE 10, SAE 20, etc.
Filtration Cleanliness Code 18/16/13
Weight cartridge only 0.43 kg (0.94 lbs)
Seal kits 565803 Buna–N
566086 Viton
®
Viton is a registered trademark of E.I. DuPont
RV8-12 - 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
2
1
2
1
EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 E-241.A
An Eaton Brand
E
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
RV8-12 - Relief Valve
Poppet, direct acting, differential area
132 L/min (35 USgpm) • 350 bar (5000 psi)
77.8
(3.06)
“2”
“1”
44.45
(1.750)
1-1/16 - 12UN - 2A
ADJUSTMENT CODE “S”
Ø 23.73 - 23.77
(.934 - .936)
Model Code
RV8 12 (V) X (
*
)
***
(U)
**
/
** **
1 2 3 4 5 6 7 8 9 10
1 Function
RV8 - Relief valve
2 Size
12 - 12 size
3 Seal Material
Blank - Buna-N
V - Viton
®
4 Adjustment
C - Cap
K - Knob
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
7 Cavity
Blank - Cavity without
undercut
U - Cavity with undercut
8 Cracking Pressure Range
Note: Code based on pressure
in psi.
4 - 3,4-350 bar (50-5000 psi)
12 - 13-85 bar (200-1250 psi)
25 - 20-170 bar (300-2500 psi)
50 - 40-350 bar (600-5000 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
82.1
(3.23)
