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Cole-Parmer Venturi Vacuum Pump, 0.5 cfm, 28.0"Hg

Item# DO-78165-00

$101.50 USD/EACH

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  • No moving parts ensures long life with low maintenance.
  • Venturi pumps are air-powered—require no electrical power source or lubricant.
  • Place these compact pumps close to application for fast response and minimal vacuum loss.
These new pumps take advantage of the venturi effect—as a stream of compressed air exits a constricted orifice the resulting pressure drop draws air through a vacuum port. Since they require no oil or electricity, the resulting vacuum (up to 29.5" Hg) is clean and efficient. With no moving parts or electrical hazards, these pumps are also intrinsically safe. The remarkably compact size of these pumps enables you to design vacuum systems with smaller, less expensive components and reduced maintenance costs. Each model (except 79165-40) includes a replaceable silencer that reduces noise levels up to 30% while offering minimal resistance to air flow.
Select the pump model best suited to your specific application. Model 78165-20 includes a vacuum gauge which provides easy visual monitoring—helpful when troubleshooting. We recommend an air filter upstream of the pump to prolong service life. Filter should have a pore size of 50 µm or smaller. Order our 75300-92 filter/regulator below.
Max vacuum 28.0" Hg
Product Type Dry vacuum pump
Free-air capacity 0.5 cfm (14.2 L/min)
Air input at 80 psi 0.8 cfm (22.7 L/min)
Port size air supply: UNF 10-32, vacuum: UNF 10-32
Max temperature 140°F (60°C)
Wetted parts anodized aluminum body, brass venturi, and Buna N seals
Dimensions 2-1/2"L x 5/8"W x 5/8"H
Qty/ea 1
Brand Cole-Parmer


at $16.30 USD/EACH

Usually ships in 14 days.

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Questions and Answers

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3 Questions | 3 Answers
Displaying questions 1-3
  • Q:

    What is low temperature range for Venturi vacuum pump, 0.5 cfm, 28.0 by Cole-Parmer ?
    Currently, only high range (60 deg C) is shown.
    Asked on 8/25/2014 by Gregory from Union City, CA

    1 answer



      The minimum temperature is 15 degrees F (-9.5C)

      Answered on 8/26/2014 by Jay from Technical Support
  • Q:

    Can this vacuum pump be used in an OSHA class II div I environment?
    Asked on 6/25/2014 by J from AZ

    1 answer



      This pump does not carry such a rating and has not been tested for use in hazardous areas. There are no moving parts or electrical connections, though this will require an air compressor.

      Answered on 6/27/2014 by Jay from Technical Support
  • Q:

    can the vacuum pump be used in a machining application where liquid coolants are used ?
    Asked on 5/11/2010 by Anonymous

    1 answer



      This pump is for gasses only, if there are liquids in your system you should use a trap to remove them before they get to the pump to avoid damage.

      Answered on 5/12/2010 by David from Tech Support
Displaying questions 1-3

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Product Reviews


by PowerReviews
Cole-Parmer Venturi Vacuum Pump, 0.5 cfm, 28.0"Hg

(based on 1 review)

Reviewed by 1 customer

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(2 of 3 customers found this review helpful)


smaller than it appears

By Chuck

from North Garden, Va

Verified Buyer



    • Difficult To Use
    • Needs special fittings -

    Best Uses

      Comments about Cole-Parmer Venturi Vacuum Pump, 0.5 cfm, 28.0"Hg:

      I have not been able to use the pump because I had to order additional fittings and tubing.

      Displaying review 1

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