Welch® WOB-L Laboratory Vacuum Pumps

from $365.00 $327.00

SKU DESCRIPTION MAXIMUM VACUUM ULTIMATE PRESSURE FREE AIR DISPLACEMENT ELECTRICAL QUANTITY PRICE ADD TO CART
variant 2511B-01 WOB-L Lab Vacuum Pump 21.3 in Hg 219 Torr (292 mbar) 0.39 cfm (11 L/min) 115V, 60Hz 1 Each
$365
$327
variant 2546B-01 WOB-L Lab Vacuum Pump 27.6 in Hg 60 Torr (80 mbar) 1.6 cfm (45 L/min) 115V, 60Hz 1 Each
$795
$705
variant 2534B-01 WOB-L Lab Vacuum Pump 27.2 in Hg 70 Torr (93 mbar) 1.2 cfm (34 L/min) 115V, 60Hz 1 Each
$715
$637
variant 2522B-01 WOB-L Lab Vacuum Pump 26.0 in Hg 100 Torr (133 mbar) 0.76 cfm (22 L/min) 115V, 60Hz 1 Each
$630
$564

Reliable WOB-L Piston pumps are perfect for many common laboratory vacuum applications. Features: Vacuum and Pressure - to 100 Torr (26"Hg). Includes Vacuum and Pressure Regulators and Gauges - simple to adjust and monitor vacuum level and delivery pressure. Inlet Water Trap - float ball rises to seal off pump from accidental ingestion of water. Muffler quiets pump and filters discharge air. For use with dry or aqueous vapor applications only.

Key Features

  • Economical
  • Oil Free
  • Adjustable Vacuum / Pressure

Suggested Applications

  • Replace Water Aspirator
  • Vacuum Filtration

Specifications

Model Number 2511 2522 2534 2546
Applications Filtration, Aspiration, Desiccation, Replace water aspirator, Vacuum Drying Filtration (1 to 2 funnels), Aspiration, Desiccation, SPE, Replace water aspirator, Vacuum Drying Filtration (1 to 4 funnels), Aspiration, Desiccation, SPE, Replace water aspirator, Vacuum Drying Filtration (1 to 6 funnels), Aspiration, Desiccation, SPE, Replace water aspirator, Vacuum Drying
Type Laboratory Vacuum Pump Laboratory Vacuum Pump Laboratory Vacuum Pump Laboratory Vacuum Pump
Free Air Displacement cfm (l/min.) @60Hz 0.39(11) 0.76(22) 1.2(34) 1.6(45)
Free Air Displacement m3/hr (l/min.) @50Hz 0.55(9.2) 1.1(18) 1.7(28) 2.3(38)
Ultimate Pressure 219(292) 100(133) 70(93) 60(80)
Maximum Vacuum 21.3 26 27.2 27.6
Max Pressure PSIG (pascal) 33(3.3 x 105) 100(106) 50(5 x 105) 100(106)
Motor Horsepower (watts) 1/30(25) 1/8(93) 1/8(93) 1/4(190)
Adjustable Vac. / Gas Ballast Yes Yes Yes
Tubing Needed 3/16(5) 3/16(5) 3/16(5) 3/16(5)
Intake Thread NPT 3/16 in. Hose 1/4 1/4 1/4
Overall Dimensions LxWxH in. (cm) 7.6x4.5x7.5 (19.4x11.4x19.1) 8.1x8.8x10 (20.6x22.4x25.4) 8.1x8.8x10 (20.6x22.4x25.4) 10x7.5x9 (25.4x19.1x7.7)
Ship Weight 6(2.7) 17(7.7) 17(7.7) 17(7.7)
Shipping Carton Dimensions LxWxH in. (cm) 11x7x8.3 (28x18x21) 15.3x12.3x12.7 (39x31x32) 15.3x12.3x12.7 (39x31x32) 15.3x12.3x12.7 (39x31x32)
Intake Catch Jar Yes Yes Yes
Exhaust Catch Jar Yes Yes Yes
Adjustable Vacuum Knob Knob Knob
Adjustable Pressure Yes Yes Yes
Vacuum Gauge Dial Dial Dial
Pressure Gauge Dial Dial Dial