VS23 Series – Continuous Duty, Constant Flow Air Sampling Systems


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Product Highlights

  • Automatic Flow Control Valve
  • Continuous Duty/Constant Flow
  • Longer Vane Life
  • “Lubricated for Life” Bearings
  • N.I.S.T. Traceable Flow Meter
  • Flow Ranges of 0.1 – 9.0 CFM
  • NRTL listed with TUV SUD*


Air Mover: Oilless, Rotary Vane, Vacuum Pump with 1/4, or 3/4 HP, 115 or 230 VAC, Shock Mounted Motor.
Control Valve: (MCV-260) Mechanical, Heavy Duty, Automatic Flow Control Valve. This valve controls the air flow rate to ±5% of the operator set flow rate.
Control Valve: (MCV-22) Mechanical, Heavy Duty, Differential Type Automatic Flow Controller. Maintains operator pre-set flow rate within 5%.
Timer Option: Replace “XX” with: 11 for Hrs & Tenths of Hrs / 13 for Min. & Tenths of Min. / 10 for Hrs & Min.
Filter Holders: See Filter Holders For Air Sampling, “RV-Series”
Filter Cartridges: See Analytical Cartridges
Filter Paper: See Filter Paper For Air Sampling
Air Flow Calibrator: See Air Flow Calibrators
Replacement Pumps/Kits: See Replacement Rotary Vane Vacuum Pumps & Service Kits in the “Air Sampling Accessories” section of this catalog.


The VS-Series Air Sampling Systems can be either incorporated as the primary vacuum source in air monitoring instrumentation or used in conjunction with filter holders and filter media for the collection of particulate and/or gaseous constituents. The systems are furnished complete with a shock mounted base motor/pump, carrying handle, heavy duty constant air flow control valve (MCV-260), venturi flow meter, exhaust muffler, hard mounted toggle switch, 8 foot 14/3 grounded power cord, fuse holder, fuse and a 3/8” female quick disconnect for easy filter holder and sample line replacement. All rotary vane motor/pumps have automatic overload cut off and are warranted for one year after purchase.

All 1/4 and 3/4 HP units include hard mounted toggle switch, 8 foot 14/3 grounded power cord, fuse holder and fuse.

Additional information


VS23-0523CV (115 VAC), VS23-0523CV-EETXX (115 VAC), VS23-0523CV-EETXX/230 (230 VAC), VS23-0523CV/230 (230 VAC), VS23-1023CV (115 VAC), VS23-1023CV-EETXX (115 VAC), VS23-1023CV-EETXX/230 (230 VAC), VS23-1023CV/230 (230 VAC)