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Tiefbrunnenpumpe wählen: Einbautiefe, Steigrohr und Kabel
Eine Tiefbrunnenpumpe ist meist eine mehrstufige Tauchpumpe, die Wasser aus großer Tiefe durch die Steigleitung nach oben drückt. Die Seite behandelt Rohrdurchmesser, Einbautiefe gegenüber Absenkung, Steigrohr und Kabel, Rückschlagventile und den Vergleich mit dem Tiefbrunnen-Jet. Der allgemeine Leitfaden deckt den gesamten Brunnenbereich ab. Dies ist eine Lieferseite, kein Shop.
Where suction stops working
Pushing water up from far below
When the water is too deep for suction, the pump has to go down the well. The usual answer is a multistage submersible, where a stack of impellers builds pressure and pushes water up the riser pipe. Surface alternatives are covered on the shallow well pump page and the jet pump page; the whole range is in the well pump guide.
Deep-well jet or submersible
A deep-well jet puts the ejector down the well with two pipes, and the pump stays up top. It is easier to reach but noisier and less efficient as depth grows. A submersible is quieter and more efficient at depth but must be pulled to be serviced.
Casing size, setting depth and drawdown
4-inch and 6-inch casings
Submersible pumps and motors are made to fit common nominal casing sizes, with 4-inch and 6-inch wells widespread. State the actual inside diameter, because the pump needs clearance for the cable and the drop pipe.
Setting depth
Set the pump well below the dynamic water level so the intake stays covered and the motor stays cooled by flow, and clear of silt at the bottom. Do not set it too deep, because the riser and cable get longer and heavier.
Drawdown and yield
Drawdown is how far the level falls while pumping. The pump should not draw more than the well recovers. Use the tested yield, and leave margin for dry seasons.
Total head
Head is the lift from the dynamic level, plus the rise to the tank or outlet, pipe friction and the pressure you need. State flow at that head. A multistage curve is steep, so a head error shows up as a flow error.
Drop pipe, check valves, cable and motor
Drop pipe and riser
The riser carries the weight of the water column and often the pump. Rigid steel, plastic pipe and flexible hose are all used. A torque arrestor and a safety rope help stop the pump twisting or falling.
Check valves
A check valve at the pump stops water draining back, and a second one higher up can be added in a deep setting to limit water hammer. Position depends on depth and pressure.
Cable
Cable size sets voltage drop over a long run. Cable must be rated for submerged use and is spliced with a proper waterproof joint. Give the cable length from the control point to the pump.
2-wire or 3-wire motor
A 2-wire motor has its starting parts inside. A 3-wire motor uses an above-ground control box that can be serviced without lifting the pump. The well pump guide has more on wiring.
Sand, dry run and materials
Sand wears stages and bearings, and running dry overheats the motor. Stainless steel shells and thermoplastic impellers are common. Ask for the sand limit and dry-run options for the model.
Pressure system
A tank and pressure switch, or a variable-speed controller, sit at the surface. These are separate items in a deep-well job and are quoted on request.
Selection checklist for a deep well
Send these fields on the inquiry form. The pump spec guide has the general RFQ brief.
Well data
Total depth, casing inside diameter, static and dynamic level, tested yield.
Flow and head
Flow at total head, including rise, friction and tank pressure.
Setting depth
Planned depth and riser length.
Motor and cable
2-wire or 3-wire, voltage, phase, frequency, cable length.
Water quality
Sand, iron, acidity, chlorides and temperature.
Branding and packaging
Private label, carton or crate lots and quantity.
What the catalog covers
The catalog does not list a deep-well submersible, a drop-pipe set, a control box, a pressure tank or a controller. The nearest items are surface pumps on the transfer line, such as the multistage high-head pump, which is not a borehole pump. Deep-well duty is quoted to your duty sheet.
Two ways to buy
OEM and private label
Building a deep-well range under your own brand? Start from a duty sheet. See Custom OEM for options and the private-label hub for housing, label and packaging.
Wholesale supply
Buying in crate lots for distribution or installation? The wholesale hub covers lots and spares. MOQ is quoted by SKU, not as a site-wide number.
Deep well FAQ
Do you sell to consumers?
No. This is OEM and wholesale supply for brands, distributors and contractors, with no cart and no public price. Send a duty sheet on the inquiry form.
Does the catalog include a deep-well pump?
No. It lists surface pumps on the transfer line, none of which is a deep-well submersible. Deep-well duty is quoted from a duty sheet.
Submersible or deep-well jet?
A submersible is quieter and more efficient at depth. A deep-well jet keeps the pump at the surface. See the jet pump guide for how the ejector works.
What data do you need to size it?
Casing inside diameter, total depth, static and dynamic water level, tested yield, flow and total head, and water quality.
How deep should it be set?
Well below the dynamic level so the intake stays covered, and clear of the bottom to avoid silt. Setting depth is a duty decision, so share the well report.
Can you private-label these or supply them wholesale?
Yes, quoted from a duty sheet. See private label and wholesale.
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