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Gardena 3900 Silent - Autoclave Pump - 650 W - 3.900 L/h

Questions & Answers (1)
ID: 112968

EAN: 4066407502314

MPN: 9066-20

Gardena 3900 Silent - Autoclave Pump - 650 W - 3.900 L/h
Power supply
Absorbed power
650 W
Max. head lift
43 m
Max. suction height
8 m
Max. pressure
4.3 bar
Pressure tank
Max. flow rate per hour
3900 L/h
Product Features
3900 Silent
Power supply:
230 V Electric:
Pressure tank:
Absorbed power:
650 W
Manufacturing country:
Pump data
Max flow rate per minute:
65 L/min
Max. flow rate per hour:
3900 L/h
Max. head lift:
43 m
Max. suction height:
8 m
Max. pressure:
4.3 bar
Hose fitting diameter:
32 mm
Check valve:
Free gifts/extra features
Instructions manual:
Dimensions and logistics
Product dimensions in cm (L x W x H):
54X45X25 cm
Net weight:
13.7 Kg
Original packaging
Original packaging/s dimensions in cm (L x W x H):
58x50x20 cm
Gross weight (packaging included) :
14.2 Kg
Assembly time:
Prompt Delivery
8 items in stock
Free Shipping
Estimated delivery: 24/05/2024 - 28/05/2024
€ 300,55
VAT Included

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Gardena3900 Silent Autoclave Pump

The Gardena 3900 Silent is an autoclave water pump designed to meet all watering and water pressure boosting needs in the home.

This model is ideal for efficient garden irrigation, drawing water from different sources such as taps, tanks and cisterns, and for boosting water pressure during the warmer months, thus ensuring a constant and reliable flow for every need.

Characterised by its quietness and energy efficiency, the Gardena 3900 Silent is distinguished by its high level of performance with lower energy consumption. Thanks to its motor, developed in Germany, it has an energy consumption of only 650 watts. The pump is also extremely quiet: thanks to its high-quality plastic casing, it has a maximum noise level of only 47 dB(A) at a distance of 5 metres. Rubber feet ensure that the pump is secure and operates with low vibration. The autoclave switches on independently according to water demand and then switches off automatically

The technical specifications of this model include a 230V power supply, with a 650 W motor that guarantees a water flow rate of 3900 litres per hour and a maximum head of 39 metres, ensuring excellent performance in all situations. The 21 litre reservoir capacity provides ample water reserves for extended watering operations.

With its combination of quietness, energy efficiency and advanced control, the Gardena 3900 Silent is an ideal solution for those seeking optimal home water management, ensuring effective irrigation and improved water pressure with maximum comfort and convenience.


These pumps are suitable for transferring water (as from a tank to another filling container) or intended for "small" surface irrigation for the garden and outdoor areas. We do not guarantee the suitability for the combined use with sprinklers of different typologies or various real irrigation systems, (as they require the contribution of a qualified technician and a number of calculations in terms of flow rate, head, pressure, pipe diameters, valves, nozzles, and so on), which may require more specific types of pumps for water systems.

Technical Features

For those looking for reliable and durable solutions in domestic water management, the Gardena 3900 Silent is a cutting-edge option thanks to its advanced technical features:

  • Automatic switch-off device against overheating for increased pump protection.
  • Self-priming capacity up to 8 metres, with a maximum head of 39m and a maximum pressure of 4.3 bar, suitable for various applications.
  • 33.3 mm (G1") threaded connection for simplified connection to standard water systems.
  • Integrated thermal protection prevents overheating, ensuring optimal operational safety.
  • 21-litre stainless steel tank, guaranteed for five years and maintenance-free, demonstrating commitment to reliable products.
  • Drain plug for quick and convenient emptying, facilitating maintenance.
  • Stainless steel water outlet with manual start valve, pre-filter and anti-backflow valve for immediate and uncomplicated use.
  • 650 W motor for robustness and power, with stainless steel motor shaft for long life.
  • Compact design with a mechanical pressure gauge for precise pressure monitoring.
  • Maximum inlet water temperature limited to 35°Cto ensure proper functioning of the unit.
  • Pressure switch for starting and stopping the pump with specific pressure thresholds (1.5 bar +/-0.1 bar for starting, 3.0 bar +/-0.1 bar for stopping) for reliable control.
  • Made in Germany, the Gardena 3900 Silent is synonymous with quality construction, guaranteeing excellent performance and unrivalled durability in the domestic water pump sector.
Free items & Standard equipment

Standard Equipment

The pump is shipped in its original packaging together with the instructions manual.

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