An Introduction to Liquid Ring Vacuum Pump Systems

Industrial Vacuum Trends on the Rise

Vacuum technology emphasizes efficiency and sustainable industrial operations. In India, demand for industrial vacuum systems is rising steadily, especially in the pharma sectors.

Tekman Industries Pvt. Ltd. are specialists in vacuum solutions across various industrial sectors. Their solutions are known for their versatility, durability, and capability to handle challenging process conditions. One of their specialized solutions is Liquid Ring Vacuum Pumps (LRVPs).

What is a Liquid Ring Vacuum Pump (LRVP)?

A Liquid Ring Vacuum Pump uses water as sealant to create vacuum. It is a positive displacement pump. Other process-compatible liquids can be used as per the application. It is particularly effective for handling saturated vapours, moisture-laden gases, and light solids.

How the LRVP System Works – In 5 Simple Steps:

1. Liquid Ring formation phase

An impeller spins inside an eccentric cylindrical filled with liquid. Due to the centrifugal force, the liquid forms a ring within the casing, and thus a rotating liquid ring is formed.

2. Suction Phase

Gas or vapor enters the pump as the space between impeller blades expands as they rotate past the suction port.

3. Compression Phase

As the blades rotate, the space between blades decreases and compresses the gas trapped.

4. Discharge Phase

The compressed gas and a small amount of sealing liquid are dispelled in this phase. It comes out through the discharge port.

5. Liquid Recovery - optional

Sealing liquid can be cooled and recirculated via a separator or recovery tank to minimize waste.

Why Choose Liquid Ring Vacuum Pumps?

• - Tolerates liquid carryover — ideal for wet processes
• - Operates quietly and smoothly
• - Minimal maintenance, no metal-to-metal contact
• - Compatible with explosive/corrosive gases when used with proper materials
• - Ideal for continuous operation
• - Suitable for vapours, fumes and wet gases

Industries & Applications

Liquid ring vacuum pumps are for industries that need steady vacuum generation and tolerance for vapour or liquid carryover.

• 1. Chemical & Pharma - Distillation, evaporation, drying, solvent recovery
• 2. Food & Beverage - Vacuum packaging, aroma recovery, evaporation
• 3. Power Plants - Turbine gland sealing, condenser evacuation
• 4. Paper & Pulp - Dewatering, vacuum press applications
• 5. Textiles & Rubber - Impregnation, moulding, and drying processes
• 6. Petrochemical - Gas compression, vapour recovery

Tekman’s System Solutions

Tekman takes pride in its solutions as they go beyond just selling pumps; they engineer intelligent vacuum systems that meet your plant needs.

Heat Exchanger for Seal Water Cooling

It cools the recirculating seal water and maintains optimal operating temperature in the closed-loop system. This ensures consistent vacuum performance and protects pump internals from overheating.

• • Options: Shell & Tube or Plate Type
• • Material: SS304/316 or Titanium
• • Cooling Source: Chilled, tower, or ambient water
• • Temp Range: 25–35°C for optimal performance
• • Custom pump material selection for corrosive environments

Closed-Loop Water Circulation System

• • Reduces water consumption by recirculating sealed water
• • Ideal for water-scarce zones
• • Eco-friendly and efficient

Water Level High/Low Interlock

• • Monitors the seal water level to ensure operational safety
• • An automatic pump that stops if the water level is abnormally high or low.
• • No dry running and system flooding, thus boosting equipment life.

Auto Water Drain Facility

• • Automatic drainage of seal water for shutdown or maintenance purposes.
• • Prevents water stagnation, scaling, and bacterial growth.
• • Minimal manual intervention is needed as it is efficiently auto-operated.

Auto Water Fill Facility

• • Automatically refills the system to maintain optimal water levels.
• • Ensures consistent performance without manual top-up.
• • Integrated with interlock logic to operate only when needed.

Tekman’s Service Speaks Reliability

• • Installation Support
On-site supervision & commissioning to ensure proper setup and seamless integration of the Tekman LRVP system into your process.
• • After-Sales Technical Support
Troubleshooting, performance audits & training via phone, email, or site visit, as per your needs.
• • Ready Stock of Genuine Spares
Mechanical seals, impellers, bearings, and gaskets are available for quick dispatch.
• • Nationwide Maintenance Network
Quick response across India’s industrial zones for routine preventive maintenance or emergency breakdown support.

Key Design Factors Before Choosing an LRVP System:

• - Nature & volume of gases/vapours
• - Target vacuum level & flow rate
• - Temperature of the process and surrounding environment
• - Required water conservation level
• - Spatial needs and provision
• - Sealant liquid compatibility
• - Energy efficiency goals

Future-Ready Vacuum Systems from Tekman

Whether you're scaling up an existing setup or building from scratch, Tekman's Liquid Ring Vacuum Pump Systems provide the performance, reliability, and sustainability for you to either scale up your existing setup or build from scratch. It gives you smart automation, reduced water usage, robust service support, and ensures it runs smoothly in demanding environments.

Talk to our experts today and let Tekman design the right solution for your application.