EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 E-320.A
An Eaton Brand
E
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
1VR200 - Relief Valve
Spool, ventable, pilot operated
200 L/min (52 USgpm) • 350 bar (5000 psi)
Description
This is a ventable, internally
pilot operated relief valve
designed to limit pressure in a
system. Good for continuous
duty and accurate pressure
control with constant or
varying flows. The vent feature
can be used with remote pilot
section for a two-pressure
system or to allow manual
or remote ‘unloading’ of the
pump.
Operation
When inlet pressure exceeds
the setting of the valve, the
pilot section opens. The
pilot flow causes a pressure
imbalance across the main
section spool causing it to
open, allowing relief flow to
tank.
When ‘vented’, pilot flow is
referenced directly to tank,
bypassing the pilot section.
This flow through the vent
causes a pressure imbalance,
opening the main section
and dumping the pump at
minimum pressure drop.
Features
High accuracy of pilot operated
design. Hardened working
parts give long, reliable,
trouble-free life. Ventable
for versatility of application.
Cartridge construction for
installation into your own
manifold.
Pressure Drop Curves
Performance Data
Sectional View
Ratings and Specifications
Figures based on: Oil Temp = 40°C Viscosity = 32 cSt (150 SUS)
Rated flow 200 L/min (52 USgpm)
Max setting 350 bar (5000 psi)
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 A16102 (See Section M)
Torque cartridge into cavity 100 Nm (73 lbs ft)
Weight 1VR200 0.74 kg (1.6 lbs)
1VR250 1.82 kg (4.0 lbs
Seal Kit SK173 (Nitrile)
SK173V (Viton
®
)
Recommended filtration level BS5540/4 Class 18/13 (25 micron nominal)
Operating temp -30° to +90°C (-22° to +194°F)
Leakage 35 milliliters/min @ 280 bar
Nominal viscosity range 5 to 500 cSt
Viton is a registered trademark of E.I. DuPont
1
2
3
Flow - L/min
Pressure - psi
Pressure - bar
Flow - US gpm
0 50 100 150 200 250
0 13 26 39 52 65
400
350
300
250
200
150
100
50
0
5800
5075
4350
3625
2900
2175
1450
725
0
Flow - L/min
Pressure - psi
Pressure - bar
Flow - US gpm
0 50 100 150 200 250
0 13 26 39 52 65
100
75
50
25
0
1448
1086
724
362
0
Vented pressure
drop
Vent (3)
Tank (2)
Pressure (1)
EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 E-321.A
An Eaton Brand
E
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
Dimensions
mm (inch)
1VR200 - Relief Valve
Spool, ventable, pilot operated
200 L/min (52 USgpm) • 350 bar (5000 psi)
3 Port Sizes
Code Port Size Housing Number - Body Only
Aluminium Steel
8W 1" BSP B3496 B3497
16T 1" SAE B6807 B11555
1 Function
1VR200 - Cartridge Only
1VR250 - Cartridge and Body
2 Adjustment Means
P - Leakproof Screw
Adjustment
G - Tamperproof Cap
(See page E-7 for
dimensions)
Model Code
1VR*** F 10W 35
1 2 3 4 5
5 Seals
S - Nitrile (For use with most
industrial hydraulic oils)
SV - Viton (For high
temperature and most
special uid applications)
Cartridge Only
Basic Code
1VR200
Complete Valve
1" Ports
Basic Code
1VR250
4 Pressure Range @ 14 l/min
Note: Code based on pressure in bar.
20 - 10-210 bar. Std setting 100 bar
35 - 30-350 bar. Std setting 210 bar
Std setting made at 14 L/min
Note: For applications above
210 bar, please consult our
technical department or use
the steel body option.
Note: Tightening torque of “F"
adjuster locknut - 20 to 25 Nm.
Hex Socket
Adjust 4.0 A/F
81.5
(3.21)
40.5
(1.59)
max
Tank (2)
Vent (3)
1-5/16-12 UN-2A
38.0 A/F
17.0 A/F
100.0
(3.94)
2 holes
Ø9.0
(0.35) thro’
115.0
(4.53)
58.0
(2.28)
20.0
(0.79)
155.5
(6.12)
max
25.4
(1.00)
50.8 (2.00)
1
3
2
80.0
(3.15)
12.0
(0.47)
44.0 (1.73)
68.0 (2.68)
76.2 (3.00)
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