MD Kinney Liquid Ring

MD Kinney Liquid Ring Pumps for Industrial Vacuum Applications

MD Kinney has been a trusted name in industrial vacuum technology since the original Kinney Vacuum Pump Company was established in 1875. Today, MD Kinney continues to manufacture high-quality vacuum solutions for industrial facilities across North America. Known for reliability, durability, and engineering excellence, MD Kinney liquid ring pumps are widely used in chemical processing, plastics manufacturing, food production, power generation, and many other demanding industries.

MD Kinney Liquid Ring Pumps provide dependable vacuum generation for applications involving moisture, vapors, condensable gases, and challenging process conditions. Their simple operating principle and rugged construction make them an ideal choice for facilities requiring reliable vacuum performance with minimal maintenance requirements.

What Is a Liquid Ring Pump?

A liquid ring pump is a positive displacement vacuum pump that uses a rotating impeller and a liquid seal to create vacuum. During operation, the impeller rotates inside a partially filled casing, creating a liquid ring that forms compression chambers between the impeller blades.

As the impeller rotates, gases are drawn into the pump, compressed, and discharged. Because the process gas does not directly contact the rotating metal components, liquid ring pumps can safely handle wet, corrosive, dirty, and vapor-laden gas streams that may damage other vacuum technologies.

This unique design makes liquid ring pumps one of the most versatile vacuum solutions available for industrial applications.

Benefits of MD Kinney Liquid Ring Pumps

MD Kinney liquid ring pumps offer numerous advantages over other vacuum pump technologies, particularly in harsh industrial environments.

• Reliable operation in wet and humid conditions
• Excellent vapor handling capabilities
• Low maintenance requirements
• Continuous-duty operation
• Simple and durable design
• Handles corrosive and contaminated gases
• Reduced risk of process contamination
• Long service life

Because the liquid seal absorbs heat generated during compression, liquid ring pumps operate at relatively low temperatures, making them well suited for applications involving condensable vapors and moisture.

Single-Stage Liquid Ring Pumps

Reliable Vacuum Performance for General Industrial Applications

MD Kinney single-stage liquid ring pumps are designed for applications requiring dependable vacuum generation and high-volume gas handling. These pumps provide efficient performance while maintaining the durability and simplicity that liquid ring technology is known for.

Single-stage models are frequently used in manufacturing facilities, chemical plants, food processing operations, and wastewater treatment systems where consistent vacuum performance is essential.

• High-volume gas handling
• Continuous-duty operation
• Excellent vapor tolerance
• Durable industrial construction
• Low operating costs

These pumps are particularly effective in applications where moisture and process vapors are present, allowing facilities to maintain productivity while minimizing equipment wear.

Two-Stage Liquid Ring Pumps

KLRC Series for Deeper Vacuum Levels

MD Kinney KLRC two-stage liquid ring pumps are designed for applications requiring deeper vacuum levels than single-stage pumps can achieve. These pumps are capable of reaching vacuum levels as low as 4 Torr while maintaining the reliability and vapor handling advantages associated with liquid ring technology.

The two-stage design improves vacuum performance while providing dependable operation in challenging industrial environments.

• Vacuum levels down to 4 Torr
• Enhanced process efficiency
• Excellent handling of condensable vapors
• Suitable for demanding industrial applications
• Reliable continuous operation

KLRC pumps are commonly used in chemical processing, vacuum drying, plastics manufacturing, and industrial vacuum systems that require lower operating pressures.

MD Kinney A Series Liquid Ring Pumps

Designed for Long-Term Reliability

The MD Kinney A Series liquid ring pumps utilize an axial flow design that reduces susceptibility to cavitation compared to traditional flat plate pump designs. This allows air and process gases to move efficiently through the pump while maintaining stable operation.

The result is a vacuum pump capable of running continuously for extended periods with minimal maintenance requirements.

• Axial flow design
• Reduced cavitation risk
• Improved operational reliability
• Lower maintenance requirements
• Long equipment life

Many facilities operate A Series pumps around the clock for years while maintaining dependable vacuum performance.

Applications for MD Kinney Liquid Ring Pumps

MD Kinney liquid ring pumps support a wide range of industrial applications where moisture, process vapors, or difficult gas streams are present.

Chemical Processing

Liquid ring pumps are commonly used in chemical plants because they can handle corrosive vapors, process gases, and moisture without sacrificing reliability.

Plastics Manufacturing

In plastics manufacturing, liquid ring pumps are frequently used for vacuum forming, injection molding support, mold evacuation, and seal flush applications.

Food Processing

Food production facilities utilize liquid ring pumps for packaging, vacuum conveying, and processing operations that require dependable vacuum performance.

Power Generation

Power plants rely on liquid ring pumps for condenser evacuation, vacuum systems, and auxiliary process applications.

Petrochemical Operations

The ability to handle vapors and contaminated gas streams makes liquid ring pumps ideal for many petrochemical applications.

Liquid Ring Pumps in the Plastics Industry

One of the most common applications for MD Kinney liquid ring pumps is within plastics manufacturing operations. During injection molding, liquid ring pumps create vacuum inside molds to remove trapped air and gases that can cause defects in finished products.

This process improves product quality while increasing production efficiency. Liquid ring pumps are also widely used as seal flush systems that help cool and lubricate mechanical seals on process pumps.

By maintaining proper seal temperatures and lubrication, liquid ring pumps help extend equipment life while reducing maintenance costs and unplanned downtime.

Find the Right MD Kinney Liquid Ring Pump

Whether you need a single-stage pump for general industrial vacuum service or a two-stage KLRC pump for deeper vacuum applications, MD Kinney offers proven liquid ring technology designed for long-term reliability. Built to handle demanding industrial environments, these pumps provide dependable vacuum performance while minimizing maintenance requirements.

Browse our inventory of MD Kinney Liquid Ring Pumps or contact our vacuum specialists to find the right solution for your application.