Pilot operated pressure relief valve 1kg

Functional description of Pilot operated pressure relief valve 1kg:

Pressure relief valve types ZDB and 22DB are pilot operated and are of sandwich plate design. They are used to limit the pressure within a hydraulic system. They basically consist of the housing (7), together with one or two pressure relief valve cartridges.

The system pressure is set by means of adjustment element (4).

At rest, the valve is closed. Pressure in port A acts on the spool (1). At the same time pressure passes through orifice (2) on to the spring loaded side of spool (1) and via orifice (3) to the pilot poppet (6). If the pressure in port A rises above the value set on spring (5), the pilot poppet (6) opens. Fluid can now flow from the spring loaded side of spool (1), orifice (3), and channel (8) into port T. The resulting pressure drop then moves spool (1), causing this to open connection A to T, while the pressure set at spring (5) is maintained.

Features of Pilot operated pressure relief valve 1kg:

-Sandwich plate valve

- 4 pressure ranges

- 5 circuit options

-With one or two pressure relief cartridges

- 4 adjustment elements:

. Rotary knob

. Sleeve with hexagon and protective cap

. Lockable rotary knob with scale

. Lockable rotary knob


Ordering details of pressure relief valve with one or two pressure relief cartridges :




Symbol: 1=valve side, 2=plate side



Technical data of pressure relief valve with one or two pressure relief cartridges:

Pressure Fluid		Mineral oil or Phospate ester
Temperature range      ℃		-30~+80
Viscosity range       mm²/s		10~800
Oil contamination level		Recommend a filter with a minimum retention rate of β10≥75
Max. operating pressure   (Mpa)		To 31.5
Max. setting pressure   (Mpa)		to 5\to 10\to 20\to 31.5
Max. flow            L/min		To 60
Weight (kg)	ZDB 6	Approx 1
	Z2DB 6	Approx 1.2

Unit dimensions (dimensions in mm)

Type ZDB6 VA...




Type ZDB6 VB... and Type ZDB6 VP...


Type Z2DB6 VC... and Type Z2DB6 VD...

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