• ChemTec Adjustable Flow Monitor 125-B-BP-NO

ChemTec Adjustable Flow Monitor 125-B-BP-NO

Are you buying in volume? Are you an OEM? Are you a reseller? Be sure to contact FLW directly for your special pricing.  
Shipping Weight:
2.00 LBS

FREE Ground Shipping


  • Broad range of adjustability
  • Compact size
  • High resolution
  • Close on-off differential
  • Ease of customer setting
  • Monitors gases or liquids
  • Materials: 316SS, brass, or Teflon
  • Confirms: normal flow conditions
  • Sense: high flow and low flow conditions
  • Output: switch contact
  • Vacuum systems
  • Wet stations
  • Gas analyzers
  • Cooling systems
  • Industrial fluid lines

When no flow is present the free magnetic piston rets on the bottom of the bore, which is in a bypass off the main line. Adjustment of the orifice in the main line creates a small bypass flow to lift the magnetic piston and actuate the reed switch. When flow decreases, the piston moves downward and the reed switch deactuates.
  • Actuation points for air at 68*#176;F and 14.7 psia with increasing flow
  • Deactuation (decreasing flow) average 10% less than actuation (increasing flow)
  • Repeatability ±2%
  • Unit will pass greater flows

Product Specifications

General Specifications

Body Material:Brass
Bypass Deisgn:By pass
Switch:Single Pole Single Throw Normally Open
Max. Working Pressure:1500 psig (103.42 barg)
Wetted Parts:Brass, expoxy
Temperature Opearting Range:0° to 220°F (-17° to 104°C)
Calibration Range
Air:100 to 20,000 scc/m (0.21 to 42.4 scfh)
Water:3 to 500 ml/m (0.048 to 7.93 gph)
Port Size:1/8" FNPT
Pressure Loss Table
Air Flow Rate:100, 5500, 7000, 20000, 60000 cc/m (0.21, 11.7, 14.8, 42.4, 127.1 scfh)
Water Flow Rate:3, 200, 400, 500, 950 ml/m (0.048, 3.17, 6.34, 7.93, 15.10 gph)
Differential Pressure:1.2, 9.2, 11.7, 24.7, 69.7 mbars (0.50, 3.71, 4.71, 9.93, 28.00 inches of water)