PISC-F678 Cast Iron Submersible Pumps
Model code PISC-F678 formerly CISP-876F
PISC-F678 — Cast Iron Submersible Pumps. Cast iron submersible pumps are designed to be continuously submerged in the pumpage, so the casing becomes part of the installation rather than something bolted above a sump. That makes them the default choice for wet wells, lift stations, drainage and transfer duties where a dry-mounted pump would need a separate chamber, priming system or long suction line.
Where a cast iron submersible pump makes sense
- Wet wells and sewage lift stations where the pump sits in the flow.
- Abrasive or solids-laden service, where heavy walled volutes give longer life than a light casing.
- Intermittent drainage and storm water duties, including unattended sites.
- Installations where above-ground floor space is limited, or the pump must be quiet in operation.
Performance options
Two impeller styles cover most duties:
- Enclosed impellers handle solids 2″ and larger, with flows up to 20,000 GPM and heads up to 450′.
- Delta impellers handle stringy materials, rags and similar debris, and are available in pumps up to a 10″ discharge size, handling flows of 5,000 GPM and heads up to 400′.
A cooling jacket and heat exchanger option protects the motor from overheating during extended periods of low liquid level operation, or when handling high temperature liquids.
Technical specifications
Figures reproduced from the manufacturer data for this pump family; confirm the exact model against your duty point.
Features and benefits
- Heavy-wall volutes for extended life under abrasive service conditions.
- Smooth-passage impellers for optimal hydraulic efficiency and reduced operating costs.
- Replaceable wear rings and back pull-out design for ease of maintenance.
- Motor temperature protection embedded in the stator windings, shutting the motor down in the event of abnormally high temperatures.
Installation and auto-coupling
The pump can be coupled to a premium efficient electric motor or to hydraulic power. The auto-coupling system uses a cast iron discharge elbow, bronze guide claw flange, and stainless steel upper and intermediate guide rails, so the pump can be lowered and lifted without anyone entering the wet well.
That matters on sewage duty: no confined-space entry for a routine lift, and the sealing face is made up by the weight of the pump rather than by a technician.
Cast iron or stainless steel?
Cast iron is the economical choice for neutral and mildly aggressive waste water. Where the medium is saline, chemical or genuinely corrosive — coastal installations, trade effluent, process water — specify a stainless steel or duplex variant instead; we carry stainless submersible ranges for those duties.
Frequently asked questions
Frequently asked questions
What is the difference between a cast iron submersible pump and a stainless steel one?
The wetted material. Cast iron suits sewage and neutral waste water and is the lower-cost option; stainless steel or duplex is specified where the medium is corrosive, saline or a chemical effluent.
Can these pumps run partially submerged?
A submersible motor relies on the surrounding liquid for cooling. Continuous operation at low level needs the cooling jacket and heat exchanger option, or a different pump type.
What is the largest solids size the pump will pass?
With enclosed impellers, solids of 2″ and larger are handled. Delta impellers are used where the solids are stringy rather than simply large.
Can the pump be lifted without entering the sump?
Yes — the auto-coupling arrangement with guide rails allows the pump to be raised and lowered from above.
Do you supply the guide rails and discharge elbow as well as the pump?
Yes. The auto-coupling system is part of the supply: cast iron discharge elbow, bronze guide claw flange and stainless steel guide rails.
From the catalogue
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