EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 E-180.A
An Eaton Brand
E
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
RV4-10 - Relief Valve
Poppet, thermal relief with reverse flow check
1 L/min (0.25 USgpm) relief/45 L/min (12 USgpm) check • 350 bar (5000 psi)
Operation
As a check valve the valve
remains closed until the
pressure at port 1 exceeds
the 1.24 bar (18 psi) cracking
pressure. The valve will hold
pressure in port 2 until the
setting of the thermal relief is
reached.
Flow will then take place from
port 2 to 1. This flow should be
limited to that produced due to
the thermal expansion of the
oil in port 2.
Features
Very low leakage from port
1 to 2. Hardened and ground
working parts. Good re-seat.
Compact solution in a single
cartridge.
Performance Data
Sectional View
Description
This is a check valve with a
built in thermal relief. It is
ideal for protecting actuators
from damage when ambient
temperatures cause the locked
in oil pressure to increase. The
thermal relief is limited to 4 L/
min (1 USgpm) and should not
be over-flowed.
Pressure Override - psi
Pressure Override - bar
Flow - USgpm (105 SUS oil @ 120°F)
Flow L/min (21,8 cSt oil @ 49°C)
Thermal Relief (port 2-port 1)
0 0.5 1.0 1.5
0 1 2 3 4 5 6 7
0
350
250
200
100
50
0
150
300
1000
2000
3000
4000
5000
Pressure Drop - psi
Pressure Drop - bar
Flow - USgpm (105 SUS oil @ 120°F)
Flow L/min (21,8 cSt oil @ 49°C)
Free Flow (port 1-port 2)
0 8 16 24 32 40 48 56
0 2 4 6 8 10 12 14
0
1
2
3
4
5
6
7
0
20
60
100
40
80
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)
Rated flow – check valve 45 L/min (12 USgpm)
– relief valve 1 L/min (0.25 USgpm)
Relief cracking pressure ranges 28 - 350 bar (400 - 5000 psi)
Check valve cracking pressure 1,24 bar (18 psi)
Reseat pressure More than 90% of cracking pressure
Internal leakage, port 2 to port 1 0.3 mL/min (5 drops/min) at cracking pressure
Cavity C-10–2
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 0,11 kg (0.25 lbs)
Seal kits 565803 Buna–N
566086 Viton
®
Viton is a registered trademark of E.I. DuPont
Pressure Override &
Free Flow Curves
Cartridge only
1
2
2
1
EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 E-181.A
An Eaton Brand
E
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
RV4-10 - Relief Valve
Poppet, thermal relief with reverse flow check
1 L/min (0.25 USgpm) relief/45 L/min (12 USgpm) check • 350 bar (5000 psi)
Model Code
RV4 10 (V) F (S)
**
50/
**
00
1 2 3 4 5 6 7 8 9
1
Function
RV - Check valve with
thermal relief
2
Size
10 - 10 size
3
Seal material
Blank - Buna-N
V - Viton
®
4
Adjustment
F - Factory Set
5
Valve Housing Material
Blank - Aluminum
S - Steel
6
Port Size
Code Port Size Housing Number
Aluminum Aluminum Steel
Light duty Fatigue rated Fatigue rated
0 Cartridge only
3B 3/8" BSPP 02–175462 – –
2G 1/4" BSPP – 876702 02–175102
3G 3/8" BSPP – 876703 02–175103
6H SAE 6 – 876700 –
8H SAE 8 – 876701 –
6T SAE 6 566151 – 02–175100
8T SAE 8 – – 02–175101
See section J for housing.
7
Cracking Pressure Range
Note: Code based on pressure
in psi.
50 - 28-350 bar
(400-5000 psi)
8
Setting pressure
Within ranges in
7
User must specify settings in
7 bar (100 psi) steps, Coded as
in the following examples:
10 - 70 bar (1000 psi)
25 - 175 bar (2500 psi)
9
Special features
00 - None
(Only required if valve has special
features, omitted if "00.")
31,7
(1.25)
Ø 15,80 (0.622
)
19,1
(0.75)
1
2
0.875"-14 Thd.
25,4 (1.0) hex
•
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 - 47-54 Nm (35-40 ft. lbs)
S - 68-75 Nm (50-55 ft. lbs)
Installation Drawing (Steel)Cartridge Only
– – – – – –
63.5
(2.50)
2X 7.1
(0.28)
9.5
(0.37)
12.7
(0.5)
63.5
(2.50)
19.1
(0.75)
22.2
(0.87)
1
2
19.1
(0.75)
