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Ningbo Power Hydraulic Motor Co., Ltd.
Ningbo Power Hydraulic Motor Co., Ltd.  

Gold Index: 20032

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pressure relief valves with solenoid operated control with 3 adjustment elements 

Price: 10.0~100.0 USD 
Place of Origin: Zhejiang, China (Mainland) 
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Product Detail

Model No.: DB3U
Packing: carton
Power: Solenoid
Pressure: High Pressure
Temperature of Media: Others
Brand Name: Power
Production Capacity: 20000pc/month
Delivery Date: 2 weeks
Standard or Nonstandard: Standard
Structure: Control
Media: Oil

-Three adjustment elements:
. Rotary knob
. Hex. head screw with protective cap
. Lockable rotary knob with scale

Section of pilot operated pressure relief valves with solenoid operated controlPressure Relief Valves

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.
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:
pilot operated pressure relief valves with solenoid operated control


Symbols of pressure relief valves with solenoid operated control with 3 adjustment elements:
On codepilot operated pressure relief valves with solenoid operated control


Model "X" pilot operated pressure relief valves with solenoid operated control


Model "Y" pilot operated pressure relief valves with solenoid operated control


Model "Z"pilot operated pressure relief valves with solenoid operated control


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)
pilot operated pressure relief valves with solenoid operated control

Unit dimensions of ports (dimensions in mm)
pilot operated pressure relief valves with solenoid operated control

Unit dimensions of remote control valve DBT2U (dimensions in mm)
pilot operated pressure relief valves with solenoid operated control

Unit dimensionsof remote control valve DB3U (dimensions in mm)
pilot operated pressure relief valves with solenoid operated control

Unit dimensions for cartridge connection (dimensions in mm)
pilot operated pressure relief valves with solenoid operated control


Mr. shawn
skype Mr. shawn

Tel: 86-574-87193975
Fax: 86-574-23671688
Mobile: 86- 181 5744 9077
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Company Info

Ningbo Power Hydraulic Motor Co., Ltd. [China (Mainland)]


Business Type:Manufacturer, Trading Company, Agent, Distributor/Wholesaler, Service
City: Ningbo
Province/State: Zhejiang
Country/Region: China (Mainland)

shawn:   skype

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