Engineered For Demanding Industrial Environments

Our CL series offers medium to large capacity, single stage vacuum pumps that are ideally matched to demanding industrial applications and harsh environments. This heavy-duty pump design accommodates a wide range of applications, typically including dewatering in the paper industry and vacuum filtering in mineral ore processing.

Reliable And Efficient With Conical Porting And Rotor Configuration

Patented in 1932, NASH’s conical porting design allows the force of compression to counter the weight of the rotor and shaft to help minimize load on bearings during operation. With constant innovation, NASH’s patented design features:

• Option for lobe purge to minimize damage from erosion in duties with solids present
• High liquid carryover tolerance
• Side discharge to minimize the chance of flooded start
• Performance test for all pumps

Operates As A Vacuum Pump & Compressor With A Differential Pressure Range Of 15 psig (1 bar)

Some applications require vacuum and compression in one process. Instead of handling the gas with two separate machines, our liquid ring vacuum pump & compressor models can do the job with only one pump - reducing cost and simplifying installation.

ECO-FLO™ Benefits

Do you want to save water while using your existing CL? The NASH ECO-FLO™ upgrade can help. 

• Reduces water usage by up to 50% 
• Inlet and discharge piping are unchanged - no process piping changes 
• Uses existing base, motor, and drive 
• Potential payback in less than six months 
• Overhaul to exacting OEM standards at a Nash CERTIFIED™ Service Center 
• Available in both cast iron and stainless steel 
• Nash 2-year manufacturing warranty*

NASH Classic

With more than 100 years of experience producing liquid ring pumps, we know how to design pumps & compressors built to last. As a result, NASH Classic liquid ring vacuum pumps & compressors, like the CL, are still manufactured and 100% performance-tested, carry our 2-year factory warranty and are running in thousands of plants around the world.

Technical Data

• Suction Capacity: 240 to 16,500 m³/h (140 to 14,800 ACFM)
• Vacuum Range: to 100 mbar abs. (to 3 inHgA)
• Maximum Discharge Pressure: 2,5 bar abs. (20 psig)
• Differential Pressure: to 1,5 bar (22 psi)
• Shaft Sealing: Stuffing box (standard), Mechanical Seals (single acting/double acting) on request
• Materials: Cast Iron, Stainless Steel