EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009H-180.A
An Eaton Brand
H
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
Operation
Flow into the inlet of the valve
passes through the adjustable
orifice and out of the regulated
port. The pressure drop across
the orifice is sensed on the
regulating sleeve and produces
a force which, at the required
Typical Flow Regulation
Cartridge only
flow rate, overcomes the
spring force. The resultant
movement of the sleeve
regulates the flow by closing
the radial valve ports.
The inbuilt check allows free
return of flow (2 to 1).
Features
Cartridge construction gives
versatility of application. A
valve may be fitted into a
line body, a custom designed
Hydraulic Integrated Circuit or
directly into a cylinder or other
actuator. Leakproof adjust
screw gives easy, accurate
adjustment to required flow
setting. Hardened and ground
working parts give accurate
flow control and long working
life.
20
24
12
16
Pressure differential across valve in psi
1000 2000 3000 4000 5000
70 140 210 280 350
75
60
45
30
15
Pressure differential across valve in bar
0
TYPICAL FLOW REGULATION
PRESSURE DROP FOR REVERSE FLOW
Flow - L/min (21,8 cSt oil @ 49 °C)
Flow - USgpm (105 SUS oil @ 120°F)
200
150
100
50
0 4 8 12 16 20 24
4
8
12
15 30 45 60 75
8
4
90
90
Flow - L/min
(21,8 cSt oil @ 49°C)
Flow - USgpm
Pressure drop - bar
Pressure drop - psi
(105 SUS oil @ 120°F)
Sectional View
Description
This is a two-port, restrictive
flow regulator with a built in
free flow check valve. Typical
uses include the control of
actuator speed by regulating
the flow into or out of the
actuator (meter-in or
meter-out).
The flow (and actuator speed)
will be largely independent
of the load and the pressure
conditions. If used to restrict
flow from a fixed supply, for
example a standard gear or
piston pump, the valve will
pass the required flow and any
surplus flow will normally pass
over the system relief valve.
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)
Min. pressure differential across valve 15,9 bar (230 psi)
Max. pressure differential across valve 329 bar (4770 psi)
Cartridge fatigue pressure (infinite life) 310 bar (4500 psi)
Rated flow 1,5–94,5 L/min (.4–25 USgpm)
Temperature range 40° to 120°C (–40° to 248°F)
Flow regulation accuracy 1,5–3,8 L/min (.4–1.0 USgpm) ±20% @5000 psi
above 3,8–68,1 L/min (above 1–18 USgpm) ±10% @3000 psi
above 68,1–94,6 L/min (above 18–25 USgpm) ±15% @3000 psi
3,8–56,8 L/min (1–15 USgpm) ±10% @5000 psi
above 56,8–89,1 L/min (above 15–23 USgpm) ±15% @5000 psi
Factory set maximum flow rate accuracy under
standard test conditions and within the above ranges
Reverse check crack pressure 1.7 bar (25 psi)
Leakage at shutoff position 0,5 L/min (30 in3/min)
Cavity C–12–2 & 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 material Aluminum or Steel
Weight cartridge only “S” 0,43 kg (0.95 lbs)
Seal kit 02–181304 (Buna-N)
02–181305 (Viton
®
)
Viton is a registered trademark of E.I. DuPont
Performance Data
FAR1-12 - Flow Regulator
Fully adjustable, pressure compensated with free reverse flow
1.5-94.5 L/min (0.4-25 USgpm) • 310 bar (4500 psi)
1
2
1
2