Liquid Level Controllers – Pneumatic – Model 3900 Pneumatic

1"-2" NPT - ANSI Class 150, 300, 600, 900, 1500

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 option (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
  • Threaded or Flange connection

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: 3.4MB
Liquid Level Controllers - IOM - Series 3900
PDF Size: 360KB