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Installa on Instruc ons:

Vaccon’s VPI-90H in-line venturi vacuum pump features the air supply port and 
vacuum port on the same axis. Unlike standard venturi vacuum pumps where 
the vacuum port is 90 degrees from the supply port, the VPI-90H’s can be 
a ached ver cally to a robo c end of arm tool in a single or densely populated 
array to accommodate any size, shape and weight of product being handled.

1. 

Install in-line vacuum pump to your moun ng hardware, end-of-arm-tool, extrusion, etc.. The op onal  

 

panel mount nut can be used to secure the pump to a panel. The exhaust port has a 5/8-18 UNF male 

 

thread. The panel through hole should be at least ⅞” [21 mm].

2. 

A ach air line to air supply port. A ach vacuum line to vacuum port (when not directly a aching a 

 

vacuum cup to the port). See chart below for minimum recommended sizes. 

Technical Brief: 

Vacuum System Design:

Choosing The Correct Sized Tubing

Proudly Made In The USA

© 2014 Vaccon Company

9 Industrial Park Road, Medway, MA 02053   Phone: (508) 359-7200, US (800) 848-8788   Fax: (508) 359-0177 

Visit Us Online at www.vaccon.com or email us at [email protected]

Technical Brief: 

How Vacuum Pumps Work

Operating Instructions: 

VPI-90H

 Inline Venturi Pump

Principles of Opera on

Vacuum is produced by forcing compressed air through a 
limi ng orifice (nozzle). As the air exits the orifice it expands, 
increasing in velocity to supersonic speed before entering 
the venturi sec on (diffuser). This creates a vacuum at the 
vacuum inlet port located between the nozzle and diffuser. 
The nozzle and diffuser combine to create a venturi vacuum 
cartridge. The precise fit of the nozzle to the diffuser is 
cri cal to the pump func oning properly.

   

Vacuum

Port

Op onal

Sensor / Switch

Op onal Panel

Mount Nut

Port Plug

Air Supply

Port

Exhaust Port

(bo om)

Notes: Recommended sizes are based on tubing with 
0.062" [1/16", 1.5 mm] wall polyethylene and 
polyurethane tubing. Vaccon discourages the use of 
quick disconnect fi ngs on all connec ons.

Air Supply Port

Threads

Recommended 

Air Supply Line

(outer diameter)

¼"

 Push-To-Connect

¼"

 NPT

¼"

Panel

Moun ng

Threads

Recommended 

Moun ng Hole

-18 UNF

⅞"

 [21 mm] 

Vacuum Port 

Threads

Recommended 

Vacuum Line

(outer diameter)

VPI-90H

Vacuum

Exhaust

Air

Supply

Vacuum

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