EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 E-650.A
An Eaton Brand
E
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
Ratings and Specifications
Figures based on: Oil Temp = 40° C Viscosity = 32 cSt (150 SUS)
Rated flow 200 L/min (52 USgpm)
Max setting Inlet 350 bar (5000 psi)
Reg 30–350 bar (435–5000 psi)
Max Differential 210 bar (3000 psi) between 1 and 2
Cartridge material Working parts hardened and ground steel.
External surfaces zinc plated.
Body material Standard aluminium (up to 210 bar*).
Add suffix "377" for steel option.
Mounting position Unrestricted
Cavity number A16102 (See Section 17)
Torque cartridge into cavity 100 Nm (76 lbs ft)
Weight 1PA200 0.72 kg (1.59 lbs)
1PA250 1.06 kg (2.34 lbs)
Seal kit number SK173 (Nitrile) SK173V (Viton®)
Recommended filtration level BS5540/4 Class 18/13 (25 micron nominal)
Operating temp -30°C to +90°C (-22°C to 194°F)
Pilot Flow 550 milliliters/min @ standard setting
Nominal viscosity range 5 to 500 cSt
Viton is a registered trademark of E.I. DuPont
1PA200 - Pressure Reducing Valve
Spool, pilot operated
200 L/min (52 USgpm) • 350 bar (5000 psi)
Description
This is a pilot operated
pressure reducing valve
designed to maintain a
constant downstream pressure
lower than the inlet pressure.
Ideal for use in two pressure
systems or to protect low
pressure actuators such as
brake cylinders.
Operation
This valve is normally open,
allowing oil from the inlet to pass
through to the regulated port of
the cartridge.
When the regulated pressure
reaches the valve setting, the
pilot section opens causing
a pressure imbalance across
the main spool which moves,
throttling the inlet flow,
preventing any further pressure
rise in the regulated line.
Features
Internal parts hardened, match
ground and honed to give long,
trouble-free life. Pilot style
design allows for high flows and
accurate performance.
Pressure Drop Curve
Performance DataSectional View
2
3
1
Flow - US gpm
Flow - L/min
Pressure - psi
Pressure - bar
5800
5075
4350
3625
2900
2175
1450
725
0
400
350
300
250
200
150
100
50
0
0 50 100 150 200 250
0 3 26 39 52 65
Drain (3)
Inlet (2)
Reg (1)
EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 E-651.A
An Eaton Brand
E
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
Code Port Size Housing Number
Aluminium Steel
Single Single
8W 1" BSP 1/4" BSP Drain Port B3496 B3497
12T 3/4" SAE 1/4" BSP Drain Port B10786
16T 1" SAE 1/4" SAE Drain Port B6807 B11555
Cartridge Only
Basic Code
1PA200
Complete Valve
1PA250
1PA*** P 8W 35 S
1 2 3 4 5
1PA200 - Pressure Reducing Valve
Spool, pilot operated
200 L/min (52 USgpm) • 350 bar (5000 psi)
Model Code
3 Port Sizes - Bodied Valves Only
4 Pressure Range
@ zero flow
Note: Code based on pressure
in bar.
20 - 10–210 bar
Std setting 100 bar
35 - 30–350 bar
Std setting 280 bar
Std setting made at zero flow
(dead head)
5 Seals
S - Nitrile (For use with most
industrial hydraulic oils)
SV - Viton
®
(For high
temperature and most
special fluid applications)
Dimensions
mm (inch)
1 Basic Code
1PA200 - Cartridge Only
1PA250 - Cartridge and
Body
2 Adjustment Means
P - Leakproof Screw
Adjustment
R
- Handknob Adjustment
G - Tamperproof Cap (See
page E-7 for dimensions)
41.0
(1.61)
max
80.0
(3.15)
Hex socket adjust
4.0 A/F
17.0 A/F
38.1 A/F
1-5/16-12 UNF-2A
Drain (3)
Inlet (2)
Reg (1)
– –
Note. Tightening torque of “F"
adjuster locknut - 20 to 25 Nm
Note. For applications above
210 please consult our techni-
cal department or use the
steel body option.
76.2
(3.00)
156.0 (6.14) max
80.0 (3.15)
20.0
(0.79)
8.2
(0.33)
56.0
(2.20)
20.0
(0.79)
58.0
(2.28)
115.0 (4.53)
32.2
(1.27)
25.4
(1.00)
50.8
(2.00)
1
2
3
2 holes
Ø8.5 (0.33)
thro’
