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Product Gallery Welch 2561B - 50 WOB - L Piston Vacuum Pump - Chemtech Scientific Incorporated

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Welch 2561B-50 WOB-L Piston Vacuum Pump

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The Welch 2561B-50 is a two head WOB-L piston high capacity vacuum pump. The cast aluminum housing assures durability. The inlet side vacuum gauge and controller sit atop a liquid separator. The 2561B-50 is a bargain for its performance and quality, without competition.

Warning: The 2561B-50 is a standard duty vacuum pump. The 2561B-50 pump will fail prematurely if operated on chemical duty applications. Please consult your Chemtech Scientific Representative for consultation, should your process include organic/acid/base/corrosive materials.

With a powerful 100 L/min (3.5 CFM) pumping speed and reliable deep vacuum performance, the Welch 2561B-50 is an excellent choice for non-corrosive laboratory applications. It features a durable WOB-L piston design, built-in liquid separator, and easy-to-read vacuum gauge for convenient operation. Ideal for vacuum filtration, aspiration, degassing, and general lab vacuum needs. For chemical or corrosive vapors, we strongly recommend switching to Welch’s chemically resistant PTFE DryFast diaphragm pumps.

Contact support@chemtechsci.com or call (484) 424-9415 for assistance.

                                

What's included Vacuum and pressure gauges, controller, liquid separator
Common accessory, not included Foot switch control 1430A or 1430B
Pumping Speed 65 Lit.min (2.3 CFM)
Max. Vacuum 5 Torr 
Tubing Needed 1/4" ID
Inlet Connection UNIBARB 
 Exhaust  1/4" ID
Dimensions LxWxH inches 17.3x6.5x10.5 inches
Ship Weight 24 LBS
Wiring 115V, 60 hz

The Welch 2561B-50 is a two head WOB-L piston high capacity vacuum pump. The cast aluminum housing assures durability. The inlet side vacuum gauge and controller sit atop a liquid separator. The 2561B-50 is a bargain for its performance and quality, without competition.

Warning: The 2561B-50 is a standard duty vacuum pump. The 2561B-50 pump will fail prematurely if operated on chemical duty applications. Please consult your Chemtech Scientific Representative for consultation, should your process include organic/acid/base/corrosive materials.

With a powerful 100 L/min (3.5 CFM) pumping speed and reliable deep vacuum performance, the Welch 2561B-50 is an excellent choice for non-corrosive laboratory applications. It features a durable WOB-L piston design, built-in liquid separator, and easy-to-read vacuum gauge for convenient operation. Ideal for vacuum filtration, aspiration, degassing, and general lab vacuum needs. For chemical or corrosive vapors, we strongly recommend switching to Welch’s chemically resistant PTFE DryFast diaphragm pumps.

Contact support@chemtechsci.com or call (484) 424-9415 for assistance.

                                

What's included Vacuum and pressure gauges, controller, liquid separator
Common accessory, not included Foot switch control 1430A or 1430B
Pumping Speed 65 Lit.min (2.3 CFM)
Max. Vacuum 5 Torr 
Tubing Needed 1/4" ID
Inlet Connection UNIBARB 
 Exhaust  1/4" ID
Dimensions LxWxH inches 17.3x6.5x10.5 inches
Ship Weight 24 LBS
Wiring 115V, 60 hz

Brochures

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  • Brochure Manual
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  • Accessory Welch 2561K-03 TWO HEAD SERVICE KIT for 2561
  • Accessory Welch 2561K-04 Service Kit
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