Know How

Suppoting Information for dimensoning and planning

The illustration enlarge if you drive with the computer mouse about it

You find all following information also in the operator´s manuel in detailed form.


Field of application

The automatic wastewater lifting station is designed for following fields of application:

All HydroJack products are suiteable for grey and black water.

Waste water lifting stations generally are only for an intermittent operation, i. e. sewage storage and cyclical pump out, interpreted. A continuous operation, such as with a fountain pump or drainage of surface water vounts not to the scheduled field of application. Surface water (rain, snow etc. ) may under no circumstances be conducted into the building to a wastewater lifting station. Surface water has to be separated from the domestic sewage and need to drain outside.

The following sanitary facilities are examples for what can be attached at the HydroJack 75: 

(The dimensionising always depends on the field of application and schould be checked by an expert)

  • one to two sinks
  • one bathtub
  • one washing machine
  • one toilet , etc.


You can use the HydroJack75 in this following locations:
  • Private residental
  • Family homes
  • Basement flats


Note: The dimenioning of waste water lifitng station should always be in accordance to DIN EN 12056-4.

You need more information? Contact your local speciality-store or plumber.



Installation example

With more than four connections for the inflow you are as flexible as you need it. By the additional and optionally available washing machine connection even another connectivity is made possible for you without an effortful piping.
Such an installation for a wastewater lift station isoften used for toilets in cellars, where you can place the HydroJack75 in a recess..

Recessed level installation


You can install your HydroJack below your sanitary facilities. This can be e. g. the floor plate of a one family house or a sump pit.

The power lead is long enough to install the control at your desired position.

This way of installation is recommended, since by the seperated pump sump double safety is given.


Floor level installation

You can install your HydroJack at the same level as the sanitary facilities. This order is usual if you claim to fit a toilet afterwards without sewage connection. The assembly or drain height of your toilet and the drain height of the other siphons are decisive for this. The wastewater lifting station should always on the same level or better be istalled more deeply than the toilet to ensure a good inflow to the lifting station. The HydroJack has two infllow heights for the toilet connection; 180 mm and 225 mm. You can therefore attach both, stand toilets and hanging toilets directly on the same level without an effortful piping.

TIP: The HydroJack has an attractive design which suits installation where the station is visible.



In accordance with DIN 12056-1 the installationroom need to be sufficiently ventilated to avoid a condensate water formation. The room must be so big, that a workroom of at least 60 cm breadth/height next to and over all parts is availabel.

All drainage places below the backwash level which are connected to the liftingstation, have to be dimensioned and installed in accordiance to DIN EN 12056.

For dewatering of rooms, a pump sump is provided. The sump can be drained through the Pump discharge line behind the backflow loop in the discharge line of the lifting unit.

The installation of theunit must be firm and even.

Note: A additional device which signals when water leaks into the building should be installed in the room of the lifitng station. For this, the local laws and insurance regulations must be examined. For the installation of the sewage lifting unit we recommend an additionally gate valve in the inlets and discharge line. This accessory can be found soon at our shop.


Backflow protection

The backflow protection shall be designed in the way that the water can flow back into the sewer and not in the waste water lifting unit.

The backflow level is in accordance with DIN 12056-4 the street upper edge or curbstone top. Backflow in heavy rain must be expected . Discharge points below the backflow level must be protected by automatic lifting equipment with a backflow loop in accordance with DIN EN 12056-4 or under certain conditions by backflow DIN EN 13564-1 against backflow from the canal. The sewage under the backflow level shall be leaded away by a pressure pipe over the backflow level. The backflow loop should be at least 300 mm above the backflow level.

Important: Each connection owner has to protect itself in accordance with EN standard against backflow damage. Clogging hazard when using a false backflowvalve! Insured losses are replaced only when the proper backflow-type according to DIN EN 13564 is installed. When a backflow protection is missing the processor or the planning office is liable.

In case of vertical pipelines the variant 2 is recommended to avoid strong sedimentation of the non-return valve of the HydroJack.

Discharge line

Für die vertikale Druckleitung muss eine Mindestfließgeschwindigkeit von 0,7 m/s eingehalten werden.

For the vertical discharge line a minimum flow velocity of 0.7 m/s should be adhered.

The following graphic showas the performance curve of the HydroJack 75


To consider during planning

Please consider following things during planning:

  • Backflow of sewage in the building
  • Leaking of the Unit
  • Resign of canal gases in the building
  • mechanical load
  • Effects of frost
  • Corrosion
  • Transmission of fire


Long lifetime

For long pleasure with youre HydroJack we reccomend to not inject following substances:

  • Wastewater , the mineral oils and fats Contains
  • Waste water containing organic oils and fats
  • Heavymetals (eg. zinc, lead, cadmium , nickel, chromium)
  • Aggressive substances (eg. Acids, alkalis, salts and condensates)
  • Cleaning agents and disinfectants, dishwasher and washing agent in overdosed amounts
  • Flammable or explosive substances (eg. gasoline, benzene, oil, phenols, paints containing solvents, alcohol)
  • Solids (e.g. kitchen waste, glass, sand, ash, fibers, resins, tar, cardboard, textiles, fats (oils) ,remains of paint)
  • Hygiene products/residual waste (for example, tampons, bandages, wipes, hair, cotton swabs)
  • Liquids which can harden (z.B. plaster, cement, lime)
  • Biocides (eg. plant treatment and pesticide)
  • Wastewater from manure pits and animal husbandry (eg. Liquid manure, dung)