Phoenix Pumps, Inc.

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ESSCO Submersible Recessed Impeller Pumps

ESSCO heavy duty submersible explosion-proof sump pumps are of the 100% recessed impeller design. Each unit is capable of handling long stringy material, large size solids and slurries within maximum solids handling efficiency. The ESSCO pump incorporates the vortex pumping action along with unique pump design, allowing the greatest flexibility in the submersible pump field.

VOLUTE: Each volute is engineered for maximum life in "sump pump" duties. ESSCO utilizes a single piece volute design with extra material in high wear areas.

IMPELLER: ESSCO pumps are available with various impeller designs to allow for high capacity low head or low capacity high head applications. ESSCO utilizes investment cast impellers for higher casting density and thicker vanes and back shrouds which allow for maximum life. By use of the JLI manufacturing techniques ESSCO offers trimmed impellers in extremely hard and difficult to handle alloys. By use of this production technique, impellers can be machined to act as a shredder (for solids coming in contact with the eye of the impeller) or machined to handle solids more delicate in nature.

WEAR PLATE: The ESSCO MODEL 252 comes standard with a wear plate located behind the impeller. The wear plate is designed to protect the motor bracket and mechanical seal from particle erosion. The wear plate can also act as a barrier for a seal flushing fluid when a simple wear plate is not sufficient protection against wear created by the pumped media. Again ESSCO utilizes the JLI production method for manufacturing this pump component to ensure the best possible casting quality and material density.

COOL AGIVENT: Each ESSCO submersible pump includes a Cool Agivent apparatus which is for venting pump case and cooling external surface of the motor. This patented device will allow a more shallow wet well design, as well as keeping the motor cool when not submerged. All ESSCO submersible pumps are capable of running dry continuously. (consult factory for specific applications).

Impeller Designs


Standard 100% Recessed Vortex Impeller	Ring Cup Impeller	Cup Impeller

Standard 100% recessed vortex impellers can be trimmed in any material. Cast iron, ductile iron, stainless steel, duplex stainless steel, Ni-Hard, HCI (High Chrome Iron) plus many many more.

Ring cup impellers are used in various applications but, are primarily used in grit , slurry or sludge applications. The outside diameter encompasses a ring which is part of the impeller shroud to keep particle impact to a minimum on the pump case. These impellers are available in the same materials as the standard vortex impellers.

Cup style impellers are used in grit and slurry applications with high particle content. Originally developed for the waste water grit handling market this design has found acceptance in handling sludge as well. This design is available in Ni-Hard and HCI as standard materials with Brinnell hardness ranging from 550 (as cast) up to 750. These impellers typically cannot be trimmed. Other materials can be furnished upon request.

Municipal Applications