Ultra-Mini Cylindrical Venturi Vacuum Pump - JS-40UM

The JS-40UM is incredibly compact and powerful – measuring the size of your fingertip and able to generate up to 27”Hg [914mbar]. Lightweight, quiet and cool operating, JS-40UM pumps are ideal for confined spaces, where they can be mounted in-line near the point of use for rapid response. The single-stage design allows ingested contaminants to flow through the pump without clogging ensuring continuous operation.

  • High performance - powerful vacuum up to 27”Hg [914mbar]
  • Lightweight – less than 1 oz. [28.3g]
  • Compact – 1.25” x .56”OD [31.75mm x 14.22 mm OD]
  • Input pressure from 5 PSI [0.34 bar]
  • Fast response – Mounts in-line, and installs close to vacuum point – no delay due to long plumbing lines
  • Efficient – Minimal air consumption, provides instantaneous vacuum as needed

JS-40UM Pump Standard Specifications

Pump Material: Anodized Aluminum , Silencer material -- Brass

Medium: Filtered (50 micron) un-lubricated, non-corrosive dry gases

Operating Temperature: -100° to ~400°F [-73° to ~204°C] (without silencer)

Operating Pressure: 80 PSI [5.5 bar] or 60 PSI [4.1 bar] – Consult Factory for other operating pressures

JS-40UM Operating and Installation Requirements

Vacuum and Supply Line: 5/32” O.D. [4mm] tube, 1/4” O.D. tube preferred for supply lines exceeding 3’ [1M] 

Vacuum Line Filtration: Not required

M5 screws


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