Purpose & function of water and pressure water pumps
Water pumps on board perform key tasks in the supply of fresh water for sanitary, kitchen or technical applications. Pressurized water pumps provide a constant line pressure to ensure consistent water quantities at taps, showers or washrooms.
Fresh water pumps - supply on board
Fresh water pumps pump water from tanks into the on-board supply network. They are used for
-
Sanitary facilities: WC, shower, washbasin
-
Kitchen areas: Sink, work sink
-
Technical applications: Cooling water supply or flushing systems
Modern fresh water pumps are characterized by quiet running noise, good delivery capacity and adaptation to on-board voltage.
Pressurized water pumps - constant water supply
Pressurized water pumps generate a constant pressure in the water network:
-
constant flow rate even with changing water demand
-
Pressure control: automatic activation at the start of tapping
-
Pressure stability: even with several consumption points at the same time
Pressurized water pumps are important when several tapping points are served or a constant water pressure is required.
Types & areas of application
Marine water pumps and pressurized water pumps are available in various designs:
-
Diaphragm pumps: low-maintenance, good self-priming
-
Piston/displacement pumps: high pressure performance and constant delivery
-
Rotary/submersible pumps: space-saving for confined installation spaces
-
Automatic pumps: with pressure switches for automatic operation
Each type is designed for specific application profiles and pumping requirements.
Selection criteria: Performance, flow rate & voltage
The following parameters are decisive for the right pump selection:
-
Flow rate (l/min / l/h): depending on the demand on board
-
Pressure range: for good water supply to all tapping points
-
On-board voltage: 12 V, 24 V or other on-board power supply configuration
-
Installation space & mounting: accessible installation location, vibrations
-
Noise behavior & maintenance requirements
Appropriate dimensioning ensures sufficient supply and long-term operational reliability.
Installation & connection
Attention should be paid during installation:
-
Firm and vibration-damping fastening of the pump
-
Connection of the lines without kinks to ensure the flow rate
-
Electrical protection: fuses and switches according to the on-board voltage
-
Leak test: check for leaks after installation
Good installation prevents the risk of failure and ensures constant performance.
Maintenance & care
Regular maintenance includes:
-
Visual inspection of connection lines and fastenings
-
Cleaning of intake filters or pre-filters
-
Functional check before the start of the season
-
Checking for corrosion or abrasion
Planned maintenance extends pump running time and prevents faults in the on-board water network.
Typical fault symptoms & solutions
Common signs of problems can be
-
low flow rate: clogged filters or air in the system
-
No water pressure: pressure switch defective or pump blocked
-
Loud noises: cavitation or bearing damage
-
Leaks: Leaking connections
Targeted diagnosis and replacement of affected components minimize downtimes.
