PSD Small Convoluted Diaphragm Gauge




  • Filtration systems
  • Low pressure gas systems
  • Leak detection
  • Ideally suited for use on dissimilar fluids and wet gas or fluids with high concentration of particles. Suitable for use with a diaphragm/chemical seal.


  • Versatile high static low differential pressure gauge
  • Switches available for actuation
  • ASME B40.100 compliant
  • IP65 enclosure rating
  • 5 year warranty


Case Aluminum or engineered plastic

Shatter resistant acrylic (standard), safety glass (optional)

Line Connection Locations In-line, back, dual top & bottom or bottom
Connection 1/4″ NPTF (standard), 1/2″ NPTF, 7/16-20 SAE
Wetted Parts Materials SS parts with Buna N seals
Body Material SS, aluminum or brass
Internals/Movement Magnetic coupling with convoluted diaphragm sensor
Migration of Media Zero
Seal Buna N (standard), FKM, silicone, neoprene
Standard Ranges 0 – 25 thru 100 psid (1.5 – 7 bar)
Maximum Pressure

Aluminum, SS: 3,000 psi (200 bar),

Brass: 1,500 psi (100 bar)

Maximum Temperature -40°F to 200°F (-40°C to 93°C)
Accuracy  ±2% of full scale 
Warning (brass internals only) Warning: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm.  For more information go to

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