German Clark KRACHT sliding piston pressure limiting valve HVFE series

German Clark KRACHT sliding piston pressure limiting valve HVFE series

HVFE40A1G1B80 is a German KRACHT HVFE series pilot operated sliding piston pressure limiting valve (with electromagnetic pilot control, different from the pure mechanical HV series), used for overpressure protection and remote electromagnetic control pressure relief in hydraulic/lubrication systems.

1、 Model complete decoding

HVFE: Pilot operated sliding piston pressure limiting valve (with electromagnetic pilot control, E=Electrical)

40: nominal diameter DN40

A1: Spring pressure range 1-12 bar (applicable to the same series)

G1: Connection method G1 'internal thread

B80: Factory set pressure of 80 bar (adjustable within the corresponding range)

2、 Core technical parameters

table

German Clark KRACHT sliding piston pressure limiting valve HVFE series

3、 Working principle (electromagnetic pilot+main slide valve)

Electromagnetic control: When the coil is powered on, the pilot valve core moves and opens the pilot oil circuit; The coil loses power, the pilot tan spring resets, and the pilot oil circuit is closed.

Overpressure protection: When the system pressure is ≥ 80 bar, the pilot valve opens first, creating a pressure difference between the upper and lower chambers of the main valve core, which pushes the main valve core to open and quickly release pressure, protecting the system.

Reset: When the pressure drops below the set value or the coil loses power, the pilot valve closes and the main valve core resets under the action of the spring, and the oil circuit returns to normal.

4、 Product Features

Electromagnetic pilot+sliding piston: can be remotely controlled, with high pressure regulation accuracy, fast response, and smooth operation without vibration.

Strong anti pollution ability: suitable for high viscosity media and harsh industrial environments.

German precision manufacturing: The valve body is made of high-strength ductile iron, with reliable sealing and long service life.

Easy installation and maintenance: compact structure, built-in exhaust screw, vertically installed to exhaust pilot chamber air

5、 Typical applications

Overpressure protection and remote electronic pressure relief for hydraulic stations and lubrication systems

Industrial hydraulic equipment such as injection molding machines, machine tools, and presses

Hydraulic circuit pressure control for wind power, ships, and mining machinery

6、 Selection and installation points

Confirm that the system pressure is ≤ 160 bar and the flow rate is ≤ 350 L/min.

The medium is mineral oil/synthetic hydraulic oil, with a temperature range of -20~80 ℃.

It is recommended to install vertically (with the adjusting screw facing upwards) to facilitate the discharge of air from the pilot chamber and avoid cavitation

Hydraulic oil needs to be filtered (recommended β 10 ≥ 75) to prevent valve core jamming.

Ensure waterproof sealing of electrical wiring to ensure reliable operation of the electromagnetic pilot.