Max. flow 600 L/min pilot operated pressure relief valve from China manufacturer

Max. flow 600 L/min pilot operated pressure relief valve

Payment Terms:	T/T,L/C
Place of Origin:	Zhejiang, China (Mainland)


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Product Detail

Model No.: DB30...30B/

Production Capacity: 10000PCS/MONTH

Delivery Date: 15 day

Standard or Nonstandard: Standard

Structure: Butterfly

Temperature of Media: Normal Temperature

Brand Name: Power

DB relief valve: rexroth china

Means of Transport: Ocean

Packing: carton

Power: Hydraulic

Pressure: High Pressure

Material: Casting

Media: Oil

Max. flow: 600 L/min

Back pressure: 31.5(Mpa)

The pressure relief valves (DB) consist mainly of the main valve (1) with main spool assembly (3) and pilot operated valve (2) with pressure.....

Functional description of Max. flow 600 L/min pilot operated pressure relief valve:
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).

Features of pilot operated pressure relief valves rexroth china:

-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

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

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

Ordering datails of Max. flow 600 L/min pilot operated pressure relief valve Pressure relief valve with solenoid operated

Technical data of pilot operated pressure relief valves rexroth china

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...