Sihi Liquid Ring Vacuum Pumps

For over 80 years Sterling SIHI has maintained it’s position as a leading supplier innovative technologies in liquid ring vacuum pumps and liquid ring compressors. Supplying a wide range of vacuum pumps for many industries and applications, providing reliable, trouble free operation.


LEH Series

The North American made LEH series, offer efficient single stage operation through the entire vacuum range. The vacuum pump has the capability of running up to 29″ Hg vacuum. These pumps use the liquid ring principle to ensure maximum safety in compression of hazardous mixtures. Reliability is ensured through the use of only one rotating assembly with no internal metal to metal contact.


LEM Series

The LEM close coupled liquid ring vacuum pump series offers the ultimate in multi service robust simplicity manufactured in North America. This series of pumps feature cavitation protection, single North American mechanical seal, single casing drain, continuous solids purge connection, ultimate vacuum approaching 29″ Hg. (25 Torr), and minimum space requirements.

LEM vacuum pumps are capable of handling many vapors, and gases using service liquids compatible with the metal parts and elastomers of the pumps and mechanical seal. Small quantities of liquid carryover and nonabrasive solids can also be handled.


LEME Series

The SIHIextruvac (or LEME) is applied to the handling and exhausting of dry and humid gases. These pumps are applied in all fields where a pressure of 100 to 900 mbar must be created by robust vacuum pumps. LEME is specially designed to handle additional water that is exhaust through the suction inlet.


LPH Series

The SIHI “LPH” series liquid ring vacuum pumps are reliable pumps that can be used in a variety of applications. The vacuum pumps have one moving part, the impeller and shaft assembly, and no internal metal to metal contact. The “LPH” series are available in a single stage (low to medium vacuum) and two stage (medium to high vacuum) configurations for optimum performance. These pumps are available in a wide range capacities and materials of construction to meet your requirements. The pumps can use a variety of liquids to seal the internal clearances.