pressure relief valves with solenoid operated control with 3 adjustment elements from China manufacturer

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 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.

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

pilot operated pressure relief valves with solenoid operated control

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

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