CDB series excavator hydraulic control valve
Introduction:
The CDB Series Multiple directional control valves are based on the company's 1-10T forklift, small loaders, small excavators hydraulic system of domestic and the introduction, digestion and absorption of advanced foreign technology and design to optimize the structure of the chip, CDB series multi-directional valves are characterized by wide function,good performance, compact, safe, reliable, easy maintenance.Applies mostly to forklift,loaders,compression garbage trucks and excavator.It also can be applied to other transport machinery, mining machinery system, is the host of imports of components to achieve the ideal of home-made products.
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.
CDB-F 15 He-A 20 T ... ...OT-1 Z
| Model |
Model code |
| CDB |
Multiple directional control valve |
| F |
Mpa
E=16 F=20 G=25
|
| 15 |
(mm)Nom.Dia
10,15,22
|
| He |
First block code:
U-M16X1.5Inlet body for Z port with M16X1.5
He-Inlet and outlet body for Z port with M16X1.5
Hh-Inlet and outlet body with right angle connector M16X1.5
Hh1-Inlet and outlet body for Z port with M16X1.5
Hh1-Inlet body for Z port with M16X1.5
HG-Inlet body for Z port with G1/4
U-Double pumps inlet body for Z port with ZG3/8
D-Inlet and outlet body without single way flow stabilizing valve
D1-Inlet body without single way flow stabilizing valve
|
| A |
Spool function
Parallel:O,Ox,R,A
Series-parallel combination:O,Ox,R,A,Y
|
| 20 |
Working port additional valve:
A,B:
0-Without first port(marked) 00-Without second port(omitted)
1-Secondary pressure valve
2-Overload valve(with make-up valve)
|
| T |
Positioning and returning modes
T-Spring returning
W-Ball returning
F-Recoiling return
|
| 1 |
Shape and position of spool end
1:Tongue shaped;End B
2: Fork shaped; End B
|
| Z |
Z-With operation support
Omitted if no requirement
(Dia.20,22 without support)
|
| Nom.dia(mm) |
15 |
20 |
22 |
| Nom.flow(L/min) |
80 |
160 |
200 |
| Nom.pressure(mpa) |
E |
F |
E |
F |
G |
E |
F |
G |
| 16 |
20 |
16 |
20 |
25 |
16 |
20 |
25 |
| Pressure range of relief valve(mpa) |
8~20 |
8~25 |
8~25 |
| Pressure range of steering relief valve(mpa) |
3~10 |
8~20 |
8~20 |
| Steering flow output range(L/min) |
11~16 |
22~32 |
22~32 |
| Overload valve pressure range(including secondary pressure valve)(Mpa) |
6.3~22 |
8~28 |
8~28 |
| Allowable back pressure (Mpa) |
2 |
| R spool control pressure difference(Mpa) |
<2 |
| Working oil |
Temp.range℃ |
Visc.range(mm2/s) |
Filtrating accurancy(um) |
| -20~+80 |
10~400 |
<10 |
| Weight calculation |
model |
1 |
2 |
3 |
N |
| CDB15 |
8.8 |
11.6 |
14.9 |
5+3.3N |
| CDB20 |
16.7 |
23.7 |
30.7 |
9.7+7N |
| CDB22 |
16.9 |
24.1 |
31.3 |
9.7+7.2N
|
