The 18D series of electro-mechanical pneumatic pressure switches from Norgren® offer a simple but effective solution for use within air, water, hydraulic and other neutral fluid applications.


  • Robust and compact design, shockproof up to 15g with an accuracy of ±3%.
  • Versatile in its applications - pneumatic from -1 to 30 bar or hydraulic from 5 to 420 bar.
  • Models designed for high or low operating temperatures available (-10°C to +80°C).
  • Gold-plated contacts.
  • High number of switching cycles.
  • Vibration resistant to 15g.
  • Microswitch approved by UL and CSA.
  • Direct interface to Excelon airline units.
  • Aluminium (brass) housing.
  • Port size: G1/4.
  • Heat-resistant, NBR/FPM seals.
  • IP65-rated.
  • Conforms to Low Voltage Directive 2006/95/EG.
  • ATEX-rated and LABS-free variants available.


Hayley became full official distributors for Norgren products in October 2022. Learn more about our partnership here.



The Norgren 18D Electro-mechanical Pneumatic Pressure Switch features in Maintenance Essentials Issue 11. View it online by clicking the button below!