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pressure control valve with hand override

Min. Order: 1 Set/Sets
Payment Terms: L/C, T/T
Supply Ability: 10000PCS/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.: DBW8...30B/
Means of Transport: Ocean, Air, Land
Power: Hydraulic
Standard or Nonstandard: Standard
Pressure: High Pressure
Structure: Control
Material: Casting
Temperature of Media: Normal Temperature
Media: Oil
Brand Name: Power
DBW relief valve: Rexroth
Back pressure: 6 (Mpa)
Max. flow: 100 L/min
Production Capacity: 10000PCS/MONTH
Packing: carton
Delivery Date: 15 day
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Product Description

Features of pressure control valve with hand override:
-Subplate mounting
-Pipe connection
-Insert connection
-Three adjustment elements:
. Rotary knob
. Hex. head screw with protective cap
. Lockable rotary knob with scale
-Solenoid operated unloading via a built-in directional spool valve


Functional description of pressure control valve with hand override:
General
         Types DB and DBW pressure valves are pilot operated pressure relief valves.
         They are used for the limitation (DB) or limitation and solenoid actuated unloading (DBW) of the control pressure.
         The pressure relief valves (DB) consist mainly of the main valve (1) with main spool assembly (3) and pilot operated valve (2) with pressure adjustment element.
Pressure relief valve type DB:
          The pressure presents in port A acts on the main spool (3) At the same time pressure is applied via the control lines (6) and (7), which are fitted with orifices (4) and (5), on the spring loaded side of the main spool (3) and at the poppet(8) in the pilot control valve (2). If the pressure in port A exceeds the value set at the spring (9), the poppet (8) opens against the spring (9).
          The signal for this comes internally via the control lines (10) and (6) from port A. The pressure fluid on the spring loaded side of the main spool (3) now flows via the control line (7), orifice bore (11) and poppet (8) into the spring chamber (12). In type DB...30/... it flows internally via the control line (13) to tank, or in type DB..30/..Y.. externally via the port Y. Due to the orifices (4) and (5) a pressure drop occurs at the main spool (3), 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.
         The pressure relief valve may be unloaded or switched over to a different pressure (second pressure stage) via port "X" (15).


Section of type DBW...30B/
Pressure relief valve with solenoid operated



Oil control forms of graphlic symbols
Pressure relief valve with solenoid operated


Ordering datails of pilot operated pressure relief valve plug-in connector
Pressure relief valve with solenoid operated



Technical data of pilot operated pressure relief valve plug-in connector:
Size
8
10
15
20
25
30
Max. flow            L/min
Threaded connections
100
200
200
400
400
600
subplate mounting
-
200
-
400
-
600
Operating pressure port A B X (Mpa)
To 31.5
Back pressure          (Mpa)
DB
To 31.5
DBW
To 6
Min. setting pressure   (Mpa)
Flow dependent
Max. setting pressure   (Mpa)
To 10 or 31.5
Pressure Fluid
Mineral oil or Phospate ester
Viscosity range    mm²/s
10~800
Temperature range   ℃
-30~+80
Characteristic of solenoid valve
See type WE5



Unit dimensions (dimensions in mm)

Subplate mounting:
Pressure relief valve with solenoid operated


Port Size 1
Pressure relief valve with solenoid operated


Threaded connection
Pressure relief valve with solenoid operated


Port Size 2
Pressure relief valve with solenoid operated


Cartridge connection:
Pressure relief valve with solenoid operated


Remark:
1. Low noise design can ensure the stability
2. Under the electronic control which can ensure pump and hydraulic system unloading or keep rated pressure.
3. Combine the remote valve,can actualize the 2-3 degree pressure control.

Ningbo Power has 10 sets of imported CNC machPowerng center and 5 sets of imported lath turning machPowerng center and digital control lathes, 5 sets of domestic digital control lathes and CNC multi-head drilling machine. Due to the strong process capability, the quality of main parts processed by CNC can be guaranteed well.

Not only the main parts of Power products used high-grade alloy steel material like 20CrMnTi, 42CrMo, but also adopted advanced heat treatment technology including treatment of carbon penetration, quenching, salt bath and nitrogen treatment to promise the product quality. The key parts such as screw cartridge valves, sealing, and screw bolts all were imported from USA, Germany, Italy, France and Taiwan...
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