Grundfos Submersible wastewater pump SLV.80.80.130.2.52H.S.N.51D

Non-self-priming, single-stage, centrifugal pump designed for handling wastewater, process water and unscreened
raw sewage.
The pump is designed for intermittent and continous operations in submerged installation. The efficient SuperVortex
impeller provides passage of long fibres and solids up to 80 mm and is suitable for wastewater with a dry matter
content of up to 5 %.
The pump comes with a high efficient Grundfos motor built on IE3 motor components.
Further product details
Typical applications are transfer of liquids such as:
• drainage and surface water
• domestic wastewater
• municipal wastewater
• industrial wastewater
• process and cooling water.
The pumps are ideal for pumping the above liquids from places such as:
• municipal network pumping stations
• inlet pumping stations in wastewater treatment plants
• primary clarification pits in wastewater treatment plants
• secondary clarification pits in wastewater treatment plants
• stormwater pumping stations
• public buildings
• residential buildings
• factories and industry.
The pump is suitable for both temporary and permanent installation. The lifting brackets fitted on the pumps enables
easy transportation to and installation on the site.
Pump
The pump housing and motor top are made of cast iron (EN-GJL-250) and the impeller is made of ductile cast-iron
(EN-GJS-500).
All surfaces of the cast iron parts are protected with cataphoresis coating.
The surface of the cast iron pump parts is afterwards painted with environmental friendly powder coating (type NCS
9000N (black), gloss code 30, thickness 100 µm) which ensures high impact and corrosion protection.
The final pump is assembled from already painted parts which ensures that no rust or scale can be formed in grooves
between parts, etc.
The SuperVortex impeller is a symmetrical multivane winglet impeller.
The design ensures a flow entirely outside the impeller providing limited contact between the impeller and the
pumped liquid.
This ensures that long fibres, rags and more passes freely through the pump without getting caught and without
causing clogging or jamming.
The shaft seals of the pump consist of two mechanical seals that ensure a reliable sealing between the pumped liquid
and motor. The shaft seal is a cartridge seal that enables easy service.
The combination of the primary and secondary seals in a cartridge shaft seal system results in a shorter assembly
length compared to conventional shaft seals. Furthermore, this design minimises the risk of incorrect fitting and can
be installed on site without the need for special tools.
– Primary seal: Silicon carbide/silicon carbide (SiC/SiC)
– Secondary seal: Carbon/ceramic
The shaft seal is bidirectional, meaning it operates correctly in case of backflow through the pump.
The pump discharge flange is mounted with the Grundfos SmartSeal auto-coupling gasket, that provides a
completely leak-proof connection between the pump and the base unit of the auto-coupling system. This optimises
the efficiency of the entire pumping system and keeps operating costs at a minimum.
Motor
The motor is a watertight, totally encapsulated motor supplied with a 10 m power cable. A watertight stainless-steel
cable entry with soft shape and sealing rings to prevent damage of the cable or leaks.