Pressure, Vacuum, and Differential Switches for Extreme Environments

Highly sensitive and precise, yet built for harsh industrial use.

Since 1947, the Henry G. Dietz Company has designed and built heavy duty low pressure switches, vacuum switches, and differential switches for construction, earth moving, marine, rail transportation, clean rooms, military, chemical and sewage plants, and many other demanding applications.

Now a part of the World Magnetics family of pressure, vacuum, and differential switches, Dietz models continue to deliver the long-lasting accuracy, repeatability, and reliability that has set the industry standard for over 60 years. Whether you require air pressure and air flow detection, or protection of air-cooled electronic equipment, you can count on Dietz for rugged, yet precise performance.

Contact us at 800.643.3884, or info@lowpressure.com for additional information.

DIETZ 103B VANE AIRFLOW SWITCH »

  • Vane-operated switch for airflow detection
  • Airflow ranges from 500–2,500 ft per min
  • Easy Installation — mounts directly onto duct
  • Gold contacts option for low-current applications
  • Moisture & fungus resistance models available
Dietz 103B

DIETZ D-1 DIFFERENTIAL PRESSURE SWITCH »

  • Rugged flat-plate construction in accordance with MIL-A-8625, Type 1, Class 2 specification
  • Adjustable pressure range from 0.7–7" H20
  • Single pole double throw switch action
  • High proof pressure
  • Reliable mechanical life
Dietz D-1

DIETZ 210HP HIGH PRESSURE SWITCH »

  • Adjustable pressure ranges up to 5000 psi
  • Suitable for high proof pressures (9000 psi)
  • Robust zinc plated housing sealed to IP 65
  • Industry standard Din 43650 A electrical connection
  • Mechanical life in excess of 1,000,000 cycles
Dietz 210
Design Flex Switches

For information about our lightweight and ultra-sensitive pressure, vacuum, and differential switches, visit www.designflexswitches.com.

Design Flex

DIETZ 171D / 170D ULTRA LOW DIFFERENTIAL PRESSURE SWITCH »

  • Rugged design for use in harsh environments
  • Pressure ranges from 1"–40" H20
  • Shock and vibration resistance (MIL-S-901-D & MIL-STD-167-1)
  • Chemical resistant epoxy finish available
  • Suitable for high voltage / current applications
Dietz 170/171D

DIETZ 161P LOW PRESSURE SWITCH »

  • Rugged steel housing for use in harsh environments
  • Adjustable pressure range from 0.25–15 psi
  • Single pole double throw switch action
  • Electrical rating up to 10 Amp, 125–480 VAC
  • Reliable mechanical life
Dietz 161P

DIETZ 200P PRESSURE SWITCH »

  • Rugged compact brass housing
  • Adjustable pressure ranges from 3–150 psi
  • SPDT Switch (up to 5 Amp)
  • IP 65 Environmental protection
  • Mechanical life in excess of 1,000,000 cycles
Dietz 200P

DIETZ 220V VACUUM SWITCH »

  • Rugged brass construction
  • Vacuum pressure range from 5–30" Hg
  • Withstands positive pressure up to 350 psi
  • 5 Amp SPDT snap action microswitch
  • IP 65 Environmental protection
Dietz 220V