Pressure switches DV7.1

With one adjustable change-over switch

Easily and precisely adjustable pressure switch that works according to the piston-spring principle. If the oil pressure rises to the set value, the built-in microswitch is actuated - if the pressure drops, the release takes place.

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[Translate to EN:] Typ DV7.1

Real Swiss quality

Designed for rough operating conditions, insensitive to hydraulic overloads, specially developed piston seal, housing made of anodized light metal alloy, degree of protection IP 65, with instrument plug according DIN 43650.

Universal application

7 pressure ranges for the optimal adaptation to any operating pressure, suitable for mineral oils (HLP-oils according DIN 51524), other mediums on request.

Damping

For the protection of the pressure switch we recommend the installation of a damping element as for example a throttle screw with double fitting according to the table below.

Features Advantages
Robust hydromechanical principle Easy adjustability
Seven different pressure ranges available Compact construction
Switch-on and switch-off pressures can be set individually Can be rotated 360° under pressure
Direct pressure display High IP protection class
Very high operational safety No power supply necessary
Any supply voltages Insensitive against EMV
Unit plug can be rotated by 4 x 90° Insensitive to hydraulic overload
Fine scale for setting the switching pressure Long service life
Robust construction  
Any mounting position  

Applications

  • Railway technology
  • In power plants
  • Defence Technology

Technical Data

Hydraulic fluid Mineral oil according to DIN 51524(other media on request)
Fluid temperature range -20 to 80 °C
Ambient temperature range -30 to 50 °C
Viscosity range 5 bis 400 mm²/s
DIN appliance plug connection (3P + GND) According to EN 175301-803
Mounting position Arbitrarily
Appliance plug Rotatable about 4 x 90°
Switching hysteresis of the scale end value 2 - 10%
Repeat accuracy of the scale value 1%
Degree of protection IP 65
Class of insulation I
Accuracy class 4.0
Materials Housing: Aluminium anodized

Technical data

Type Pressure [bar]Overload max. [bar]Part no.mm*Part no.*mm**Part no.**
DV7.60.33006 60 130 3658044 0.5 3688099 0.5 3688096
DV7.100.33010 100 360 3658055 0.5 3688099 0.5 3688096
DV7180.33018 180 360 3665354 0.5 3688099 0.5 3688096
DV7.250.33025 250 500 3658058 0.5 3688099 0.5 3688096
DV7.400.33040 400 800 3665378 0.2 3688087 0.2 3688059
DV7.600.33060 600 1200 3665379 0.2 3688087 0.2 3688059
DV7.1000.33100 1000 1200 3641450 0.2 3688087 0.2 3688059

* Double fitting G 1/4’’– G 1/4’’, Part no. 3683718, Throttle screw
** Double fitting G 1/2’’– G 1/4’’, Part no. 3683678, Throttle screw