Aladdin 3902 Pressure Switch 1-5 Psi 1 Amp

One part replaces virtually every pilot duty pressure switch on gas and electric heaters,
including electronic ignition and millivolt (standing Pilot)... here are a few of the features:
combination terminal design allows electric connection with either 1/4” quick connection or #8 screw terminals.
Field adjustable from 1 to 5 psi and equipped with a visual set point adjustable scale.
The housing is constructed of rugged plastic and features a unimold mounting pan/pressure fitting for superior corrosion resistance.
Floating contacts in a compact design For spas, the 3902 Universal Pressure Switch is intended for pilot duty control of heater contactors. In applications where the pressure switch carries the full heater load, use our 3000 (3925) series pressure switches.
The 3902 Universal Pressure Switch consists of a 3902 Pressure Switch with 1/8” NPT, a barb fitting and a 1/4” and a 3/16” compression fitting adapters.

This pressure switch replaces the following pressure switches:

• 3900
  
• 3901
  
• 3903
  
• 3904
  
• 3906
  
• 3909
  
• PRS-1100 Comfortzone
  
• PRS-1101 Comfortzone
  
• M3218 Hobbs
  
• 71076 Hobbs
  
• 26775 Hobbs
  
• 26776 Hobbs
  
• 26777 Hobbs
  
• 26778 Hobbs
  
• R-113 Laars
  
• R-130 Laars
  
• R-132B Laars
  
• S-19211/07-3328 Purex
  
• B600025 Raypak
  
• 600025 Raypak