Wilo Initial Aqua SPS booster set with horizontal tank

Initial Aqua SPS is a domestic booster set built on the self-priming stainless steel Jet-SPS pump with a horizontal pressure tank, used for boosting drinking water, lifting water from wells and deep reservoirs, and garden irrigation. The series has 4 models with 25 or 50 litre tanks.

Make a quote with this series Compare models

Wilo Initial Aqua SPS booster set with horizontal tank

Application: Drinking water boosting, water from wells and deep reservoirs, garden irrigation
Pump: Self-priming jet pump; AISI 304 impeller and housing, aluminium motor housing, Noryl diffuser
Mechanical seal / membrane: Ceramic/graphite/NBR · butyl tank membrane
Fluid temperature: Max. +35 °C

Models (4)

Code	Model	Quick selection (catalogue)	P2 (kW / HP)	Rated current (A)	Tank	Connections
2850805	Initial Aqua SPS 25-4.47	5 floors – 10 flats	1 / 1.3	5.8	25 l	DNA 1" · DNM 1"
2850806	Initial Aqua SPS 25-5.56	7 floors – 10 flats	1.1 / 1.5	7.5	25 l	DNA 1¼" · DNM 1"
2850807	Initial Aqua SPS 50-4.47	5 floors – 10 flats	1 / 1.3	5.8	50 l	DNA 1" · DNM 1"
2850808	Initial Aqua SPS 50-5.56	7 floors – 10 flats	1.1 / 1.5	7.5	50 l	DNA 1¼" · DNM 1"

Series specifications

Application	Drinking water boosting, water from wells and deep reservoirs, garden irrigation
Pump	Self-priming jet pump; AISI 304 impeller and housing, aluminium motor housing, Noryl diffuser
Mechanical seal / membrane	Ceramic/graphite/NBR · butyl tank membrane
Fluid temperature	Max. +35 °C
Max. suction lift	8 m
Electrical	1~230 V, 50 Hz · IP44 / F · must be run from an RCD-protected socket
Scope of delivery	SPS pump, 25 or 50 l horizontal tank, pressure switch, flexible hose, 5 m level float switch with plug

How to choose

Building: The catalogue quick selection gives 4.47 models for 5 floors – 10 flats and 5.56 models for 7 floors – 10 flats. Check the head per floor with the catalogue booster table (1 floor 18.75 m, +3.75 m per extra floor).
Tank volume: The 25 l tank takes less space; the 50 l tank means fewer pump starts. Both tank sizes come with the same pumps.
Suction: The pump is self-priming and lifts up to 8 m; check this limit where water comes from a well or deep reservoir.
Electrical safety: The catalogue requires the unit to be run from an RCD-protected socket.

How to write it in a quote

Write code, model, tank volume and power: "Wilo 2850807 Initial Aqua SPS 50-4.47 booster set with horizontal tank, 50 l, 1 kW, 1~230 V, pressure switch and 5 m level float switch included". Listing the scope avoids quoting the switch and float twice.

FAQ

How many floors can Aqua SPS supply?

The catalogue quick selection lists 4.47 models for 5 floors – 10 flats and 5.56 models for 7 floors – 10 flats. Allow for friction losses on long pipe runs.

What is the difference between 25 and 50 litre?

Pump and power are the same; only the horizontal tank volume changes. The 50 litre version is larger and heavier.

What is included?

SPS pump, horizontal tank (25 or 50 l), pressure switch, flexible hose and a level float switch with 5 m cable and plug.

Can it draw water from a well?

Yes. Lifting water from wells and deep reservoirs is a listed application; maximum suction lift is 8 m.