HYDRAULIC OR
PNEUMATIC PRESSURE SWITCH

FOR WATER AND OIL IN 2/2 AND 3/2 WAY-SEAT VALVE DESIGN DN 3 AND DN 6 MAX. 320 BAR FOR WATER, OIL AND AIR MAX. 100 BAR FOR GAS FOR PLATE MOUNTING MAX. 320 BAR

  • Protection against accidental operation
  • Each switching element can be rotated  through 90°
  • Lockable version available on request
  • Wear parts easy to access and fast to replace
  • High switching precision


As a single unit and in combination with our available directional control valves, the pressure switch can take on monitoring and protection tasks in water and oil hydraulics as well as in neumatics up to a max. pressure of 320 bar. A second version type series can be used in gas plant up to 100 bar.

Function

As a single unit and in combination with our available directional control valves, the pressure switch can take on monitoring and protection tasks in water and oil hydraulics as well as in pneumatics up to a max. pressure of 320 bar. A second version type series can be used in gas plant up to 100 bar. 


Special feature

The switching element responds without delay. It can be driven hydraulically or pneumatically at different pressure levels. Within each pressure level it can be adjusted continuously and finely. A possible lead-seal protects against any unauthorized tampering with the adjustment. The pilot-control valve has a lockable manual operation. It can also be provided with a locking device so that it cannot be switched manually by unauthorized persons, and also cannot be switched back into its basic position even after responding to and being triggered by the switching element. On request the pressure switches can also be fitted with manual vent levers to allow excess pressure or pressure drop conditions to be simulated for test purposes. A further separate and externally located manual adjustment provides for any operator to switch back the pressure switch after this has responded and once operating pressure has again been reached. There is a DVGW reg. No. for the pressure switch in combination with a use as a high pressure safety shut off device.


3/2 directional control seat
valve positive

the valve in basic position: the path from "P" to "A" is closed and from "A" to "R" is open.

3/2 directional control seat
valve negative
the valve in basic position: the path from "P" to "A" is open and from "A" to "R" is closed.


2/2 directional control seat

valve positive
the valve in basic position: the path from "P" to "A" is closed.

2/2 directional control seat
valve positive
the valve in basic position: the path from "P" to "A" is open.


Type code

Mounting example

Dimensional diagram

Pressure switch DN 3

For 2/2 directional valves, the bores designated by "A" are not required. Port "R" becomes "A".


Dimensional diagram

Pressure switch DN 6