Flow rate up to 120l/min (7.2 m³/hr)
Dynamic head up to 105m
Fluid maximum temperature up to + 40 °c
Maximum sand content: 50g/m3
Maximum operating depth 20m below water level
The NK4 is a range of multi-stage submersible pumps,
carefully engineered to give you the best in performance,
reliability, durability and ease of maintenance.
Pump installation and applications
These pumps are suitable for pumping clean water or fluids with a
sand content of no more than 50g/m3. their high performance and
dependability make them suitable for use in domestic, civil and
industrial fields: for the automatic supply of water; for
emptying tanks, sump pits, swimming pools and aquariums; for
irrigating gardens; for washing and pressure boosting systems;
and for fire-fighting purposes etc.
NK4 pumps can be installed in wells with a diameter not less than
6 inches (152mm). the pump can be installed either vertically or
horizontally; when installed vertically, it is advisable to
secure the pump by using a stainless steel or nylon cable
connected to the special eyebolt provided on the discharge head.
Aisi 304 stainless steel external casing with 1¼ inch gas thread
delivery opening uni iso 228/1
Noryl gfn2v technopolymer impellers
Noryl gfn2v technopolymer diffusers
Diaphragm in stainless steel aisi 304 complete with wear rings.
Aisi 430f stainless steel motor shaft (aisi 416 up to 0.75kw)
Motor brackets in pressed brass.
Double seal system silicon carbide/silicon carbide mechanical
seal on the pump side, and carbon/ceramic on the motor side (with
barrier oil chamber to lubricate and cool the sealing surfaces in
the absence of water).
Aisi 304 stainless steel screws
Aisi 304 stainless steel filter
Motor suitable for continuous duty. a thermal cutout device
(motor protector) is incorporated in single phase motors.
Motor cooling is assured by the liquid in which the pump is
Insulation class f (provides the motor with a considerable
overload tolerance and substantially Iicreases the service life
of the motor itself).
Protection ip 68.
20 meters "ho7 rn-f" submersible power cable with removable
Construction and safety standards in compliance with en 60 335-1
(iec 335-1, cei 61-150) en 60034-1 (iec 34-1, cei 2-3).
External float switch optional extra for single phase motors.
For next day delivery, please ensure your order is placed before 2pm Monday to Friday, orders received after 2pm Friday will be processed the next working day as we are closed at the weekend. For any orders after this time that still require next day delivery, please contact the office on 01977 602200.