EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 E-208.A
An Eaton Brand
E
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
2
1
RV8-8 - Relief Valve
Poppet, differential area
30 L/min (8 USgpm) • 350 bar (5000 psi)
Description
The RV8-8 is a direct acting
differential area, poppet type,
screw-in cartridge relief valve.
Operation
The RV8-8 remains closed
until the predetermined setting
is reached at port 2.
The force created by the
pressure acting on the
differential poppet area lifts
the poppet off the seat and
allows flow from port 2 to
port 1.
Features
Hardened and ground working
parts. Low leakage poppet
design. High flow rate for a
compact cartridge.
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) 280 bar (4000 psi)
Rated flow 30 L/min (8 USgpm)
Cracking pressure ranges 15: 3,4-100 bar (50-1500 psi)
30: 70-210 bar (1000-3000 psi)
50: 70-350 bar (1000-5000 psi)
Internal leakage, port 2 to port 1 Less than 5 drops/min @ 80% of cracking pressure
Temperature range -40° to 120°C (-40° to 248°F)
Cavity C-8-2
Fluids All general purpose hydraulic fluids such as:
MIL-H-5606, SAE 10, SAE 20 etc.
Filtration Cleanliness code 18/16/13
Housing material (standard) Aluminum or steel
Weight including coil 0,20 kg (0.43 lbs)
Seal kit 02-165874 (Buna-N), 02-165877 (Viton
®
)
Viton is a registered trademark of E.I. DuPont
Performance Data
Sectional View
Pressure Drop
Cartridge only
A - 50 spring
B - 30 spring
C - 15 spring
1
2
Inlet Pressure - bar
Inlet Pressure - psi
Flow - L/min (21,8 cSt oil @ 49°C)
Flow - USgpm (105 SUS oil @ 120°F)
C
0 4 8 1 2 1 6 2 0 2 4 2 8
6000
5000
4000
3000
2000
1000
0
0 1 2 3 4 5 6 7 8
B
A
0
70
140
210
270
345
400
EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 E-209.A
An Eaton Brand
E
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
RV8-8 - Relief Valve
Poppet, differential area
30 L/min (8 USgpm) • 350 bar (5000 psi)
Model Code
1
Function
RV8 - Relief valve
2
Size
8 - 8 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
S - Steel
A - Aluminum
For valve dimensions with manual
override option installed see page A-980.
Code Port Size Housing Number
Aluminum Steel
Fatigue Rated Fatigue Rated
0 Cartridge only
4T SAE 4 02-160730 02-160736
6T SAE 6 02-160731 02-160737
8T SAE 8 02-160732 02-160738
2G 1/4" BSPP 02-160727 02-160733
3G 3/8" BSPP 02-160728 02-160734
*Light duty housing.
See section J for housing details.
6
Port Size
7
Cracking Pressure
Ranges
15 - 3,4-100 bar (50-1500 psi)
30 - 70-210 bar (1000-3000 psi)
50 - 70-350 bar (1000-5000 psi)
8
Pressure Setting
Optional - Specify in 100 psi
increments. If not specied, set at:
15 - 52 bar (750 psi)
30 - 100 bar (1500 psi)
50 - 175 bar (25000 psi)
9
Special Features
00 - None
(Only required if valve has special
features, omitted if “00”.)
Note: Use J series, 23 W coils
with this solenoid valve.
1 2 3 4 5 6 7 8 9
RV8 8 (V) *
(*) ** ** **
00
Dimensions
mm (inch)
Torque cartridge in aluminum or
steel housing 34-41 Nm (25-30
ft lbs)
WARNING
Maintain 5-8 Nm
(4-6 ft lbs) maximum
torque on valve tube nut.
Over tightening may cause valve
failure.
WARNING
Aluminum housings
can be used for pres-
sures up to 210 bar (3000 psi).
Steel housings must be used for
operating pressures above 210
bar (3000 psi).
••
–
– –
– – –/
Cartridge Only
12,7 (0.50) hex
Torque to 3-6 N m
(4-8 ft. lbs)
“C”Adjustm ent
Torque to 3-6 N m
(4-8 ft. lbs)
2
1
76,5
(3.02)
72,6
(2.85)
Full
out
67,8
(2.67)
53,8
(2.13)
4,0 hex (0.15)
27,8
(1.09)
Ø 12,62 (0.497)
“S” Adjustm ent
22,2 (0.87) hex
0.750"-16 Thd.
81,5
(3.20)
Full
out
K option knob
Ø 31,8 (1.25)
nominal
