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Case Studies 11/07/2023


OBJECTIVE: Provide plumbing for office kitchenettes where gravity plumbing was not available.

CHALLENGE: The office refit had to be completed with minimal disruption to adjacent tenancies.

SOLUTION: Sanifast & Sanialarm Interlock

In the heart of Auckland's CBD, at popular commercial highrise 34 Shortland Street, three tenancies recently underwent new office fit-outs, which included brand new kitchenettes. In each of these instances, the kitchenettes were to be placed in locations where there was limited access to traditional gravity plumbing. 

As the office building is fully tenanted, the work had to be completed with absolutely minimal disruption to adjacent tenancies, meaning there could be no noise, dust, or water loss to neighbouring amenities. This combined with the limited access to the existing gravity plumbing meant that a unique solution was needed.After consulting Saniflo SFA, the contractors specified the Sanifast greywater pump.

Sanifast provided the perfect pumping solution in place of gravity plumbing with each unit able to pump wastewater from the new kitchenettes to the old wastewater mains, all without the need to disrupt neighbouring tenancies during the building works. Each of the three Sanifast greywater pumps were paired with a Sanialarm Interlock to provide tenants with added peace of mind in the event of an issue.

"The Sanifast greywater pump has been designed for busy office kitchenettes and with its easy plug and play connectivity to a Sanialarm Interlock alarm system, it’s an ideal plumbing solution for this innercity office project. The addition of the Sanialarm interlock provides tenants with the necessary peace of mind against potential flooding."

- Andrew Roberts, Hydraulics Plus


Sanifast is a powerful and compact greywater pump, which is ideal for light commercial use. The unit is designed to receive and pump away waste water from a dishwasher and kitchen sink, handling temperatures between 40 - 75 degrees, making it ideal for busy office kitchens.

Sanifast uses small internal float switches to detect wastewater levels, which it then pumps up to 7m vertically, 100m horizontally, or a lesser combination of both. The easy to service pump ensures businesses can operate with minimal disruption and comes complete with a built in high level alarm, large tank capacity and an integrated carbon filter and anti flood valve. Additionally, the Sanifast can be connected to the Sanialarm interlock for added peace of mind and water and power isolation.

Saniflo SFA greywater pumps allow plumbing fixtures to be installed in areas where access to waste water pipes and conventional gravity drainage is limited, increasing the design possibilities for installing additional facilities in existing buildings.


  • Plug and Play connectivity to optional external Sanialarm Interlock for water and power isolation
  • Built in high level alarm
  • Integrated carbon filter and anti flood valve
  • Ease of service design with no pipework connections on lid to hinder removal


The Sanialarm Interlock is an intuitive device that has 3 functions, whereby it sets off an audible alarm in the event of a high level issue and simultaneously shuts off incoming water supply to prevent flooding, whilst also cutting the power supply to the connected devices such as dishwashers or washing machines. The Sanialarm Interlock isa  “plug and play” solution, so you can easily affix it to a Saniflo SFA pump, providing added peace of mind in the event of a flood.

For more information, or to request a presentation, get in touch.