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SIHI® LEH Liquid Ring Vacuum Pump
Flowserve Liquid Ring Vacuum Pump Available to Order

SIHI® LEH Liquid Ring Vacuum Pump

The SIHI LEH series comprises single-stage, between-bearing liquid ring vacuum pumps with robust engineered construction, delivering dependable performance across a wide range of industrial applications.
Flow Rate Up To 5150 m³/h (3030 CFM)
Max Temperature Temperatures to 100°C (212 °F)
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🔧 NZ-based technical support 📄 Trade pricing on request 🕐 Quotes typically same day

Applications

  • Chemicals
  • Oil & Gas
  • General Industries

Key Features

  • Suction pressures to 33 mbara (0.5 psia)
  • Service liquid max. admissible temperature 60°C (140 °F)
  • Oil-free, near-isothermal compression delivers efficient, environmentally responsible vacuum operation
  • Between-bearing construction provides robust support for dependable, long-lasting performance
  • Adjustable internal service liquid return enables optimized operation across varying conditions
  • Wide material selection ensures compatibility with demanding and corrosive applications
  • Integrated cavitation protection and drain features help maximize uptime and reduce maintenance

Downloads

SIHI® LEH Liquid Ring Vacuum Pump Brochure PDF

Technical specifications

View full specification table
Brand SIHI®
Model LEH Liquid Ring Vacuum Pump
Equipment Category Liquid Ring Vacuum Pump
Size Range From DN125 (5 in) to DN250 (10 in)
Standards ATEX 2014/34/EG, NACE MR0175 / MR0103, NDT acc. ASME

Frequently asked questions

What is the SIHI LEH liquid ring vacuum pump used for?
The SIHI LEH is a single-stage liquid ring vacuum pump for industrial vacuum duties. It is used in chemical, pharmaceutical, petrochemical, oil and gas, pulp and paper, and general industrial applications.
How does a liquid ring vacuum pump work?
A liquid ring vacuum pump uses a service liquid to create a ring inside the pump casing. This ring compresses and removes gases to create vacuum without internal oil lubrication.
How does the SIHI LEH help reduce cavitation risk?
The range includes integrated cavitation protection and drain features to help protect the pump and support reliable operation.
How do I choose the right SIHI LEH vacuum pump?
Selection depends on the required vacuum level, gas or vapour, capacity, temperature, service liquid, materials, site standards and installation. Contact us and we can help identify a suitable configuration.

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