Pictured above is an ESSCO Model 4x12 HDPM horizontal pump with a trimmed impeller. The impeller and liquid end material is Nihard with a 650 Brinnell hardness.
ESSCO has been designing and manufacturing recessed style impeller horizontal pumps since 1980. ESSCO includes all the features dictated by the needs of our customers in the area of wear and abrasion resistance and has improved on many of these features. ESSCO surveyed their valued customers prior to designing this series of pumps to eliminate the problems they experienced using other manufacturer’s products. Customer suggestions were instrumental in the design of this product. After final assembly of the first units customers were invited to the factory to inspect the units. Additional suggestions were incorporated into the final design the pump, which proved to be a remarkable contribution to a well designed product. ESSCO has always had a policy of listening to our customers and implementing product changes when it makes sense to do so. ESSCO’s recessed cup style impeller horizontal pump is designed to handle grit, sludge, rags and long stringy material without plugging.


These types of solids are commonly found in waste water treatment plants and other sever duty installations.

ESSCO offers a prorated 5 YEAR WEAR WARRANTY as an option. Consult factory for details.

VOLUTE: Each ESSCO back pullout style volute is designed for ease of assembly and maximum life and is manufactured from extremely abrasion resistant materials. Extra material is provided in high wear areas as well as special designs to handle heavy grit slurries and sludges. Due to the Brinnell hardness of the volute all bolting flanges are slotted to allow for ease of assembly. ESSCO has a standard centerline discharge volute which allows it to be self venting and automatically releases air trapped in the pump volute (also known as an air bound pump). Air bound pumps are a common complaint of users who have tangential discharge volutes. The centerline discharge also eliminates the need for a right hand and left hand pump case. An optional conventional tangential design is available upon request.

SUCTION COVER: A contoured suction cover is provided to insure passage of suction sized solids from grit, rags or sludge laden liquids. The suction cover thickness ranges from .75” at the volute bolt flange to a massive 1.25” thickness at the point of highest wear.

4935 Telegraph Rd
Los Angeles, Ca 90022
Fax: (323)261-1523
Web site: www.esscopumps.com
email: sales@esscopumps.com

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