TECHNICAL INFORMATION
WORKING CONDITIONS
This catalogue shows technical specifications and diagrams measured through mineral oil of 46 mm2/s – 46cSt viscosity at 40°C - 104°F temperature.
|
Nominal flow rating |
|
50 l/min. |
|
|
Max. flow |
|
70 l |
|
|
Operating pressure (max.) |
Series-parallel (tandem) circuit |
315 bar |
4600 psi |
|
Back pressure (max.) |
on outlet port T |
25 bar |
360 psi |
|
Internal leakage A(B)®T |
Dp=100 bar – 1450 psi fluid and valve at 40°C |
3cm3/min. |
0.18 in3/min. |
|
Hydraulic fluid |
|
Mineral base oil |
|
|
Fluid temperature |
with NBR seals |
from - 20° to 80°C |
|
|
with FPM (VITON) seals |
from - 20° to 100°C |
|
|
|
Viscosity |
operating range |
from 15 to 75 mm2/s |
from 15 to 75 cSt |
|
Min. |
12 mm2/s |
12 cSt |
|
|
Max. |
400 mm2/s |
400 cSt |
|
|
Max. level of contamination |
|
19/16 – ISO 4406 |
|
|
Tie rods tightening torque (wrench 13) |
|
30 Nm |
22 lbft |
STANDARD THREADS
REFERENCE STANDARD
|
|
|
BSP |
UN-UNF |
METRIC |
|
THREAD ACCORDING TO |
|
ISO 228/1 |
ISO 263 |
ISO 262 |
|
|
BS 2779 |
ANSI B1.1 unified |
|
|
|
CAVITY DIMENSION ACCORDING TO |
ISO |
1179 |
11926 |
9974-1 |
|
SAE |
|
J1926 |
J2244 |
|
|
DIN |
3852-2 shape X o Y |
|
3852-1 shape X o Y |
PORTS THREAD
|
MAIN PORTS |
BSP |
OPTIONAL |
UN-UNF |
METRIC |
|
Inlet P |
G 3/8 |
G 1/2 |
3/4 – 16 (SAE 8) |
M18x1,5 |
|
Working ports A and B |
G 3/8 |
G 1/2 |
9/16 – 18 (SAE 6) |
M18x1,5 |
|
Outlet T and carry-over C |
G 1/2 |
- |
3/4 – 16 (SAE 8) |
M22x1,5 |
|
PILOT PORTS |
||||
|
Hydraulic ports |
G 1/4 |
|
- |
- |
|
Pneumatic ports |
G 1/8 |
|
- |
- |
DIMENSIONAL DATA
APPLICATION AREAS
This 50L GS directional control valve group is commonly used for mini excavators, compact front loaders, cranes, backhoe loaders.