For pumping sewage and water to mains.

When discharge to mains is required, but to do so by gravity is impractical, a pump chamber system will be needed.
Although available as floor-mounted units for indoor applications such as basements, the vast majority are installed outdoors at levels to suit on-site conditions and topography.

The Marsh range incorporates systems for pumping surface water or domestic sewage to mains, septic/PSTP effluent to drainage fields/watercourses, and bespoke systems for larger domestic and industrial applications.
  • Where foul water drainage from a domestic property is to be pumped to the mains the effluent receiving chamber should be sized to contain 24-hour inflow to allow for disruption in service, the minimum daily discharge being taken as 150 litres per person per day.
  • For other building types the capacity of the receiving chamber should be based on the calculated daily demand of the water intake for the building or when only a proportion of the foul sewage is to be pumped then the capacity should be based pro–rata.
  • If the sewer is to be ‘adopted’ by a local water authority, please contact Marsh Industries as Sewers for Adoption (SFA) specification and additional local authority related criteria may apply.

How does it work?

Each pump chamber contains a number of float switches linked to a control panel that automatically controls flow and levels.

In a single pump chamber there are three float  switches: Float A: Actuates the pump cycle until level drops to low level Float B:  Low level float stops the pump.

Float C: High level alarm – positioned above the pump actuator float (min 100mm)

For twin pump chamber operation there is an additional float switch (Float D) – usually positioned 150mm above first actuator (A) – which actuates the second pump in periods of higher flow.

After each cycle the pumps alternate to extend pump life and are designed to run for a minimum of 60 seconds with no more than 15 starts per hour.

Pump Chamber Benefits

  • Designed to BSEN12050 for structural strength and water-tightness and to BSEN752 to comply with hydrostatic and electrical requirements
  • Smooth internal walls and integral pump well improves pump efficiency and eliminates ‘dead spots’ which can lead to odours and  septicity
  • Pre-assembled pipework for fully automatic operation (pump/control equipment  separate).
  • Heavy duty (industrial) ‘peardrop’ floats and Lowara (Xylem) pumps throughout ensure robust, reliable design and maximum efficiency of pump with minimal clogging or wear
  • Unique ‘keying-in‘ lip to assist anchoring into concrete surround
  • High level alarm as  standard
  • Variable invert depths and orientations to suit individual site conditions