Z series excavator hydraulic control valve
Introduction:
The Z series multiple directional valves are several direction valves and a variety of additional safety valve and valve combination of the blocks combination valve may require a combination of parts work for even less than 10 multi-valve blocks. It has a high-pressure work, compact, good safety performance, high reliability and general good and so on. This series of multi valve is all each joint with a one-way valve. According to the needs of the user, Can be installed the overload valve and oil charge valve between the any one of the working channel and backing channel. Can be composed of parallel, serial or parallel strings oil complex, and there are a variety of sliding valve function, positioning, reduction and control methods may also make use of the bridge body to the mouth of oil or other external agencies to provide oil to meet a wide range A host of different needs.It is mainly used for the following ZL40 loader and multi-loaders, excavators, and other small-scale engineering machinery hydraulic system, also used for hoisting and conveying machinery, mining machinery, agricultural machinery or other mechanical hydraulic system, the multi - In executing agency of centralized control.
Advantage:
Improved smooth flow way with great capacity of small pressure loss, oil, fine micro performance,easy in operation, small leakage (inner hole of high precision, high safety valve opening and closing properties.
Z L 15 H - O 4 T . M 6 T ... ... J - Zx
| Model |
Model code |
| Z |
Multiple directional control valve |
| L |
Thread connection |
| 15 |
(mm)Nom.Dia
15,20,25
|
| H |
Pressure grade and inlet and outlet positions(see table1) |
| O |
Spool function and oil circuit mode |
| 4 |
A,Auxiliary valves on port A and port B |
| T |
Control and positioning and returning modes |
| M |
See table |
| 6 |
See table |
| T |
See table |
| J |
Oil returning mode:
(Omitted)-Outlet valve body
J-Interim valve block
|
| Zx |
See in outline drawing
|
| Model |
Nom,Dia |
Nom.pressure |
Nom.flow |
Allowable back pressure |
Working oil |
Weight |
| Temp.range(℃) |
Visc.range(mm2/s) |
Filtrating accurancy(um) |
One piece |
Two pieces |
N pieces
|
| ZL15 |
15 |
31.5 |
63 |
≦25 |
-20~+80 |
10~400 |
≦10 |
12.4 |
17.7 |
7.1+5.3n |
| ZL20 |
20 |
100 |
20 |
27.5 |
12.5
+7.5n |
| ZL25 |
25 |
160 |
29.2 |
42.8 |
15.6+13.6n |
| Model |
Nom.Dia(mm) |
Pilot pressure(Mpa) |
Pressure range of relief valve,overload valve or secondary pressure valve(Mpa) |
Opening pressure of the make-up valve(Mpa) |
| E |
F |
G |
H |
| ZL15 |
15 |
0.5~2.5 |
4~16 |
6~20 |
8~25 |
10~32 |
≦0.2 |
| ZL20 |
20 |
| ZL25 |
25
|
