pilot operated pressure relief valves with solenoid operated control
10.0~100.0 USD
| Min. Order: | 1 Set/Sets |
|---|---|
| Trade Term: | FOB |
| Supply Ability: | 20000pc/month |
| Place of Origin: | Zhejiang |
Company Profile
| Location: | Ningbo, Zhejiang, China (Mainland) |
|---|---|
| Business Type: | Manufacturer, Trading Company, Agent, Distributor/Wholesaler, Service |
| Main Products: | Hydraulic Orbit Motor, Piston Hydraulic Motors, Rexroth Pump Part, A10V Pumps, Auto Hoist Power Units |
Product Detail
| Model No.: | DB3U |
|---|---|
| Power: | Solenoid |
| Standard or Nonstandard: | Standard |
| Pressure: | High Pressure |
| Structure: | Control |
| Temperature of Media: | Others |
| Media: | Oil |
| Brand Name: | Power |
| Production Capacity: | 20000pc/month |
| Packing: | carton |
| Delivery Date: | 2 weeks |
Product Description
Section of pilot operated pressure relief valves with solenoid operated control
Features of pilot operated pressure relief valves with solenoid operated control:
-Subplate mounting
-Threaded connection
-Installation in manifolds
-3 adjustment elements:
Rotary knob
Screw with internal hexagon and protective cap,
Rotary knob with scale
-Solenoid operated control via mounted directional valve
Functional description of pressure relief valves with solenoid operated control with 3 adjustment elements:
Types DB3U pressure valves are pilot operated pressure relief valves.
Types DB3U pressure valves are pilot operated pressure relief valves.
They are used for the limitation of the operating pressure, and they may be switched over to different (2 or 3 pressure stage) by solenoids actuated.
The pressure relief valves consist mainly of the main valve. 4/3,4/1-Directional control valve (Type WE5...)
and three pilot valves. In the de-energised condition the pressure in port A is set by pilot valve (7).
The pressure present in port A acts on the main spool (1). At the same time pressure is applied via the control lines (12) and (4), which are fitted with orifices (2) and (3), on the spring loaded side of the main spool (1) and at the poppet(6) in the pilot control valve (7). If the pressure in port A exceeds the value set at the spring (8), the poppet (6) opens against the spring (8).
The signal for this comes internally via the control lines (12) and (4) from port A. The pressure fluid on the spring
loaded side of the main spool (1) now flows via the control line (3), poppet (6) into the spring chamber (9). In type
DB3U...30/... it flows internally via the control line (10) to tank, or in type DB3U..30/..Y.. externally via the port Y. Due to the orifices (2) and (3) a pressure drop occurs at the main spool (1), the connection from port A to port B is open.Now the pressure fluid flows from port A to port B while maintaining the value set operating pressure.
When solenoid "a" is energised:
The pressure in port A is set by pilot valve II
When solenoid "b" is energised:
The pressure in port A is set by pilot valve I
The setting pressure of pilot valve (7) should be higher than the setting pressure of the valve I and II.
Type DB2U:
Type DB2U pressure valves consist mainly of a directional control valve (Type WE5...) and three pilot valves
the function of this valve is basically the same as the valve type DB3U.
Ordering codes of pressure relief valves with solenoid operated control with 3 adjustment elements:
Symbols of pressure relief valves with solenoid operated control with 3 adjustment elements:
On code
Model "X"
Model "Y"
Model "Z"
Technical data of pressure relief valves with solenoid operated control with 3 adjustment elements:
Size | 8 | 10 | 15 | 20 | 25 | 30 | |
Flow L/min | Threaded connection | 100 | 200 | 400 | 600 | ||
Subplate mounting | - | 200 | - | 400 | - | 600 | |
Operating pressure (port Y) Mpa | A,B,X up to 31.5 | ||||||
Back pressure Mpa | To 31.5 | ||||||
Min. setting pressure Mpa | Flow dependent | ||||||
Max. setting pressure Mpa | 10 or 31.5 | ||||||
Pressure fluid | Mineral oil or Phospate ester | ||||||
Viscosity range mm²/s | 10~800 | ||||||
Temperature range ℃ | -30~+80 | ||||||
Size of directional valve | See directional valve 4WE5 | ||||||
Unit dimensions for subplate mounting (dimensions in mm)
Unit dimensions of ports (dimensions in mm)
Unit dimensions of remote control valve DBT2U (dimensions in mm)
Unit dimensionsof remote control valve DB3U (dimensions in mm)
Unit dimensions for cartridge connection (dimensions in mm)
