Liquid Level Switches – Pneumatic – Model 3900

1"-2" FNPT - SW, BW - ANSI Class 150, 300, 600, 900 - 2250 PSI

Pneumatic snap-acting or electric SPDT or DPDT. high/low level switch designed for level safety systems or other level control requirements.


  • Electric or pneumatic (non-bleeding pneumatic snap acting/SPDT or DPDT)
  • Field reversible switch action
  • Standard stainless steel internals suitable for marine environments
  • Optional wetted materials meet NACE MR0175/ISO 15156

If you would like additional information, please click on any literature link below or Contact Us directly so that we may provide you with detailed specifications.




*Product Summary Catalog
PDF Size: 1.2MB
Level Instrumentation Brochure
PDF Size: 1.5MB
Liquid Level Controllers - IOM - Series 3900
PDF Size: 360KB