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Vacuum Pumps

Vacuum Pumps

Davis Instruments offers a complete line of vacuum pumps for laboratory, environmental sampling, process and OEM use. From free-standing vacuum pumps to self-regulating pumping systems Davis Instruments offers vacuum pump technologies to cover a wide range of ultimate vacuum down to 1 x 10-8 mbar (7.5 x 10-9 Torr).

Use the vacuum pump selection guide below and browse through our on-line catalog to find your vacuum pressure pump, alternatively contact our Application Specialists for free technical support.

Vacuum Pump Selection Guide

The technology chosen for vacuum pressure pump applications is largely dependent on the desired vacuum level:

  • For ultimate vacuums down to 0.3 mbar (0.2 Torr) consider:
    • Diaphragm Vacuum Pumps
    • Piston Vacuum Pumps
    • Venturi Vacuum Pumps
  • For ultimate vacuums down to 2 x 10-3 mbar (1.5 x 10-3 Torr) consider:
    • Rotary Vane Vacuum Pumps
  • For ultimate vacuums down to 1 x 10-8 mbar (7.5 x 10-9 Torr) consider:
    • Turbomolecular Vacuum Pumps

When selecting a vacuum pump in addition to the ultimate vacuum required consideration also needs to be given to:

  • Chemical compatibility - Assess the compatibility of the gases with the pump and any potential problems with the process gas (eg moisture). Davis Instruments offers many chemically resistant options for highly corrosive applications.
  • Pumping speed (volume flow) and pressure requirements - Assess the vacuum pump's capability to produce both the required pumping speed (volume flow) and throughput (mass flow) against the process's needs by using the equation Q (gas load) = S (pumping speed) x P (pressure) calculation.
  • Pump Installation - Including port connections and requirement for ancillary equipment such as a roughing pump.
  • Pump Maintenance - Including frequency of maintenance cycles and required level of expertise to carry out the service.
  • Costs - Consideration should not only be given to the initial purchase price of the vacuum pump but also the operating costs, maintenance cycles and cost.

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Air Cadet Vacuum/Pressure Pump, Diaphragm, single head, 0.54 cfm, 115 VAC

  • Max vacuum: 20" Hg
  • Product Type: Vacuum/Pressure Diaphragm Pump
  • Max pressure: 18 psi
Mfg Part#
DO-07532-40
In stock.
$345.00 USD/EACH

Qty:

KNF Explosion Proof Motor Vacuum Pump, Al/NBR; 0.7 cfm/28.55"Hg

  • Max vacuum: 28.55"Hg
  • Product Type: Dry vacuum pump
  • Free-air capacity: 0.7 cfm (20 LPM)
Mfg Part#
DO-07057-85
Available for order
or call 1-888-358-4712 to order
$1,707.00 USD/EACH

Qty:

Cole-Parmer Vacuum Pump, 0.37 cfm, 20" Hg, 120 VAC

  • Max vacuum: 20 in. Hg
  • Product Type: Dry vacuum pump
  • Free-air capacity: 0.37 cfm
Mfg Part# 79202-50
DO-79202-30
In stock.
$595.75 USD/EACH

Qty:

KNF Filtration Pump, Gauge/Reg, PTFE/PPS/FKM; 0.19cfm/25.3"Hg-35psi/115V

  • Max vacuum: 25.3" Hg (120 torr)
  • Product Type: Dry vacuum pump
  • Max pressure: 35 psi
Mfg Part# N86 KT.45P
DO-78164-60
In stock.
$792.00 USD/EACH

Qty:

KNF Filtration Pump, Gauge/Reg, PTFE/PPS/FKM; 0.45cfm/27"Hg-30psi/115V

  • Max vacuum: 27.0" Hg (75 torr)
  • Product Type: Dry vacuum pump
  • Max pressure: 30 psi
Mfg Part# N811 KV.45P
DO-78164-62
In stock.
$876.25 USD/EACH

Qty:

Vacuubrand Vacuum Pump, FKM/Al/Nylon/PVC; 1.5 cfm/29.86" Hg/120 V

  • Max vacuum: 3 torr (4 mbar)
  • Product Type: Dry vacuum pump
  • Max flow rate: 1.5 cfm
Mfg Part# 20732203
DO-79103-66
Usually ships in 14 days.
$3,635.50 USD/EACH

Qty:

KNF Filtration Pump, Gauge/Reg, PTFE/PPS/FFKM; 0.6cfm/29.4"Hg-7.4psi/115V

  • Max vacuum: 29.4" Hg (15 torr)
  • Product Type: Dry vacuum pump
  • Max pressure: 7.4 psi
Mfg Part# N816.3KT.45P
DO-78164-64
Usually ships in 14 days.
$1,316.00 USD/EACH

Qty:

Vacuubrand Vacuum Pump, FKM/Al/Nylon/PVC; 1.5 cfm/29.86" Hg/230 V

  • Max vacuum: 3 torr (4 mbar)
  • Product Type: Dry vacuum pump
  • Max flow rate: 1.5 cfm
Mfg Part# 20732200
DO-79103-67
Usually ships in 14 days.
$3,635.50 USD/EACH

Qty:

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

  • Max vacuum: 28.0" Hg
  • Product Type: Dry vacuum pump
  • Free-air capacity: 0.5 cfm (14.2 L/min)
Mfg Part#
DO-78165-00
In stock.
$101.50 USD/EACH

Qty:

Vacuubrand Vacuum Pump, FKM/Al/Nylon/PVC; 2.5 cfm/29.88" Hg/120 V

  • Max vacuum: 0.75 torr (1 mbar)
  • Product Type: Dry vacuum pump
  • Max flow rate: 2.5 cfm
Mfg Part# 20736005
DO-79103-68
Usually ships in 14 days.
$5,089.00 USD/EACH

Qty:

KNF Explosion Proof Motor Vacuum Pump, Al/NBR; 0.7 cfm/29.74"Hg

  • Max vacuum: 29.74"Hg
  • Product Type: Dry vacuum pump
  • Free-air capacity: 0.7 cfm (20 LPM)
Mfg Part#
DO-07057-87
Available for order
or call 1-888-358-4712 to order
$2,030.00 USD/EACH

Qty:

Vacuum Pump, 0.5 CFM, Chemical Duty, 120 VAC, 50/60 Hz

  • Max vacuum: 3" Hg (75 torr)
  • Product Type: Dry vacuum pump
  • Max flow rate: 0.5 cfm
Mfg Part# 20721103
DO-79104-03
In stock.
$1,351.50 USD/EACH

Qty:

Gast Vacuum/pressure diaphragm pump, single head, 1.1 cfm, 220/240VAC

  • Max vacuum: 24.0" Hg
  • Product Type: Vacuum/Pressure Diaphragm Pump
  • Max pressure: 60 psi
Mfg Part#
DO-07061-22
In stock.
$471.00 USD/EACH

Qty:

Cole-Parmer Venturi Vacuum Pump, 1.2 cfm, 28.0"Hg

  • Max vacuum: 28.0" Hg
  • Product Type: Dry vacuum pump
  • Free-air capacity: 1.2 cfm (34.0 L/min)
Mfg Part#
DO-78165-10
In stock.
$152.00 USD/EACH

Qty:

Welch DuoSeal High-Vacuum Pump; 5.6 cfm/1x10-4 Torr/115 V

  • Max vacuum: 1x10^-4 Torr
  • Product Type: Oil lubricated vacuum pump
  • Free-air capacity: 5.6 cfm
Mfg Part#
DO-79201-03
Usually ships in 7 days.
$3,432.00 USD/EACH

Qty:

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