Why Oil Seal Over Traditional

One of the best features of the liquid ring pump is that it can operate with a multitude of different fluids as the seal liquid. The benefits of a self-contained oil sealed system over a traditional water sealed system include:

• Eliminates water usage and disposal costs
• Allows you to install it in remote locations where water may not be available
• Allows you to attain higher vacuum levels than with water
• Easy filter change without disconnecting piping
• Can prevent the condensing or dissolving of a process gas

Simple Rugged Construction

At the heart of the oil sealed system is a durable NASH liquid ring pump, known to provide many years of reliable service, even in the most demanding processes. An oil sealed liquid ring system is more tolerant of carryover and wear, and it provides quiet operation. The oil is not required for lubrication which means it can operate at extremely long intervals between oil changes, easily going more than 10,000 hours with no downtime. Aside from a periodic oil and filter change, the system can run for years with no scheduled maintenance.

Engineered for Industrial Processes

Our oil seal systems for general industrial processes are centered around the 2AV2 liquid ring vacuum pump. These single stage units offer capacity ranging from 95 to 340 ACFM (160 to 580 m³/h) and are used to extract and pump all dry and moist gases, mainly air and air/vapor mixtures, in chemical, food & beverage, and other general industrial processes.

Versatile Design

Each self-contained system is complete with all of the components for your basic operating needs. We also offer a wide array of optional controls including alarm switches, control panels, and completely explosion-proof packages.

We can customize the system to meet your specific needs. The pump has only one moving part and no tight clearances or metal-to-metal contact. This allows the oil sealed liquid ring package to provide the benefits of rotary vane or screw pumps without their disadvantages.

Standardized Solutions Simplify Installation

Simplify your installation with a packaged system from Nash. Pre-engineered oil sealed systems are delivered with all of the necessary components assembled and piped. You receive a complete system that is ready to install.

• Standardized Solutions Simply Installation
• Pre-engineered
• Quick Delivery
• Plug & Play - connected to your process and provide an electrical connection, no additional utilities of sound attenuating devices required

Custom Engineered Systems

Nash engineers and application specialists can customize these systems to serve processes specific to industry and application requirements. Thus, providing the optimal system to meet your efficiency, reliability, and performance needs, as well as assure maximum value. 

Need higher performance or additional customization? Contact us to discuss your custom, engineered options. 

Technical Data

• Suction Capacity: 95 to 340 ACFM (160 to 580 m³/h)
  
• Vacuum Range: to 1 inHgA (to 33 mbar abs.)
  
• Shaft Sealing: Mechanical Seal (Single acting)
  
• Materials of Construction: Cast Iron