EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 E-300.A
An Eaton Brand
E
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
1GR100 - Relief Valve
Spool, direct acting
150 L/min (40 USgpm) • 40 bar (600 psi)
Description
This is a direct acting spool
type screw in cartridge relief
valve. Ideal for low pressure
applications, giving good con-
trol with fairly constant flow.
Also very quiet in operation
when applied on low flow or
unstable hydraulic systems.
Operation
The valve is held closed by the
spring until pressure on the
piston overcomes the valve set-
ting, allowing relief flow to tank
through a ring of radial holes.
Features
Stable, quiet operation.
Cartridge construction gives
maximum flexibility in mount-
ing. Offering good repeatability
and reseat.
Pressure Drop Curves
Performance Data
Sectional View
Ratings and Specifications
Figures based on: Oil Temp = 40°C Viscosity = 32 cStt (150 SUS)
Rated flow 150 L/min (40 USgpm)
Max setting 40 bar (600 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 A881 (See Section M)
Torque cartridge into cavity 60 Nm (44 lbs ft)
Weight 1GR100 0.31 kg (0.7 lbs)
1GR145 0.54 kg (1.2 lbs)
1GR150 0.91 kg (2.0 lbs)
1GR155 1.08 kg (2.4 lbs)
Seal kit SK190 (Nitrile)
SK190V (Viton
®
)
Recommended filtration level BS5540/4 Class 18/13 (25 micron nominal)
Operating temp -30° to +90°C (-22° to 194°F)
Leakage 15 milliliters/min nominal
Nominal viscosity range 5 to 500 cSt
Viton is a registered trademark of E.I. DuPont
1
2
Flow - US gpm
Flow - L/min
Pressure - psi
Pressure - bar
50
40
30
20
10
0
1GR100
725
580
435
290
145
0
0 30 60 90 120 150
0 8 16 24 32 40
Tank (2)
Pressure (1)
EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 E-301.A
An Eaton Brand
E
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
1GR100 - Relief Valve
Spool, direct acting
150 L/min (40 USgpm) • 40 bar (600 psi)
3 Port Sizes
1Basic Code
Model Code
1GR*** P 3W 16 S
1 2 3 4 5
4 Pressure Range
@ 4.8 l/min
Note: Code based on pressure
in bar.
0.6 - 0.3-6 bar.
Std setting 6 bar
2 - 5-25 bar.
Std setting 20 bar
4 - 5-40 bar.
Std setting 28 bar
Std setting made at 4.8 L/min
5 Seals
S - Nitrile (For use with most
industrial hydraulic oils)
SV - Viton (For high
temperature and most
special fluid applications)
Code Port Size Housing Number - Body Only
Aluminium Aluminium Steel Aluminium Steel
1GR145 1GR150 1GR150 1GR155 1GR155
3W
3/8" BSP C1084
4W 1/2" BSP B4851 C1044 C593
6W 3/4" BSP B3954 C1086 C4917
8W 1" BSP B1617 B4596
6T 3/8" SAE B10784
8T 1/2" SAE C7140
12T 3/4" SAE B10506 B10742
16T 1" SAE B1037 B24040
– –
Dimensions
mm (inch)
Complete Valve1GR145
Cartridge Only
Basic Code
1GR100
Complete Valve
3/8", 1/2", 3/4" Ports
Basic Code
1GR150
Complete Valve
1" Ports
Basic Code
1GR155
Note
: For applications above
210 bar, please consult our
technical department or use
the steel body option.
154.0
(6.06)
max
2 holes Ø10.3 (0.41) thro’
76.0
(2.99)
100.0
(3.94)
25.4
(1.00)
50.8
(2.00)
32.0
(1.26)
49.2
(1.94)
1
2
1
38.0 (1.50)
7.9 (0.31)
60.3
(2.37)
76.2 (3.00)
28.5
(1.12)
44.5
(1.75)
15.9
(0.63)
130.0
(5.12)
max
31.8
(1.25)
76.2
(3.00)
38.1
(1.50)
1
2
17.0 A/F
54.0
(2.13)
max
Hex socket adjust
4.0A/F
Tank (2)
Pressure (1)
56.7
(2.23)
1-14 UNS-2A
28.5 A/F
146.0
(5.75)
max
2 holes
Ø8.7 (0.34) thro’
25.4 (1.00)
1
1
2
38.1
(1.50)
6.3
(0.25)
50.8 (2.00)
12.7
(0.50)
35.0
(1.38)
71.4
(2.81)
92.0
(3.62)
31.8
(1.50)
50.8
(2.00)
