Welch* 2561B-50 Standard Duty Dry WOB

This high throughput standard duty oil-free vacuum pump is powered by an economical WOB-L Piston. Simplicity is the key to the economical design. As piston wobbles, air resistance on upward stroke expands PTFE seal on piston to increase its efficiency while compensating for the wobble action.
(WelchNet Vac. Lines up to 250 ft.) Inlet 7 mm, use thickwall vacuum tubing (332-67324).

For Non-Corrosive Duties such as:
• Cell harvesting
• Centrifuge
• Filtration
• Aspiration
• Drying

Features:
• Fast filtration
• Vacuum guage
• Inlet jar
• Vacuum to 4 Torr (29.8 in Hg)
• No water or oil
• Lightweight, compact and quiet
• Continuous oil-free pumping
Image(s) are representative of the product group and not necessarily the individual product.

Free Air Displacement CFM (L/min): 2.1 (60)
Ultimate Vacuum: 29.8 in. Hg (5 torr)
Dimensions in. (L x W x H): 17.3 x 6.5 x 10.5
Shipping Carton Dimensions, in.: 21 x 12 x 15
Weight lbs. (kg): 16.5 (7.5)
Shipping Weight lbs. (kg): 24 (10.9)