• For commercial & private use

18 Litre Water Tank

Article#
18 litre upright slimline water tank, manufactured from durable MDPE material. Ideal for compact storage and narrow spaces, robust and durable.
View full description
Capacity
(Litre)
18 Litre
Dimensions
(LxWxH)
44x18x26 cm
Lid Size
cm
15 cm
View all specifications
Selectable options:
drilled (open)

drilled (open)

connection of accessories possible.

not drilled (closed)

not drilled (closed)

outlet/threaded sleeve completely encased in plastic from inside - drilling possible at any time.

Selectable options:

vented

allows air exchange for pressure equalization

unvented

sealed lid for closed systems

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As low as: 83.–
98.77 Incl. Tax
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Description / 18 Litre Water Tank

18 litre upright water tank made from high-quality MDPE – narrow upright/vertical design for space-saving installation in tight areas.

Features & Benefits

  • 4-5 mm wall thickness for strength and reliability
  • From high quality MDPE, roto-moulded (seamless; no welded seams)
  • Durable and impact-resistant for long service life
  • Food-safe, UV-resistant and chemical-resistant; REACH-compliant
  • Temperature resistant for water up to +70 °C

Installation & Handling

  • The 1/2" BSP outlet is standard. Choose drilled (open) for immediate use with brass connection sets, or undrilled (sealed) so the outlet remains closed until needed.
  • For adding extra connections, outlets, fillers or vents use our PP Tank Connection Sets. See our installation guide for detailed instructions.
  • 15 cm screw lid.
  • Inspection opening: 11.7 cm for easy access and cleaning
  • Dimensions: 44 cm × 18 cm × 31.5 cm (L × W × H incl. lid)

Applications

  • Professional & industrial: plant and mechanical engineering, OEM projects, industrial and production facilities, process and cooling water, agriculture, horticulture, construction sites
  • Mobile: campers, motorhomes, caravans, boats, yachts, service vehicles, cleaning vehicles, mobile water supply, events and emergency services
  • Domestic: rainwater harvesting, garden irrigation, toilets, washing machines, cleaning systems, household water supply and DIY projects
  • Spin Weld Outlets available on request for larger orders or OEM projects.

Drawings & Certificates

3D step file available on request. Technical drawing, WRAS food safety certificate, REACH/RoHS-compliance and chemical resistance list are available for download below.

FAQs & Installation

  • What does drilled vs. undrilled outlet mean?
  • How can I install additional connections on the tank?
  • How should I secure or fasten the water tank?

Find detailed answers and more questions in our FAQ section.

Drawings & Certificates

Resistance Chart Fluids Tanks (Size: 88 KB)
Technical Drawing (Size: 742.7 KB)
WRAS Certificate Potable Water Food Grade Temperature (Size: 2 MB)
RoHS 3 and REACH Statement (Size: 257.8 KB)

More Information

General Information
Capacity (L) 18
Dimensions (LxWxH cm) 44 x 18 x 26
Height incl. Lid (cm) 31.5
Shape & Type Vertical Tank
Weight (kg) 1.6
Material & Durability
Material MDPE
Wall Thickness (mm) 4
Food-Safe Certification WRAS approved - natural / black / light blue
UV Resistance Yes
Temperature Resistance (°C) max. + 70°C
Chemical Resistance Yes with undrilled BSP Outlet
Suitable for Waste Water & Diesel Yes
Design Features
Baffles No
Lid Size (cm) 15 cm
Inspection Opening (cm) 11,7 cm
Lid vented selectable
Lid with Float optional
3D file available Yes, on request
Connections & Installation
BSP Connections Yes
BSP Connection Size 1/2"
Spin Weld Outlet possible Yes
Installation Type upright, vertical
Mounting Options plastic-coated steel strips / stainless steel brackets / frames
Accessory Compatibility Brass & Plastic, Filters, Float-Valves

Make your order complete

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Push-In BSP Fitting 3/4" external thread x 1/2" internal thread + EPDM Gasket - food safe

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PP Tank Connection Set 13 mm Hose 90° Bend

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PP Tank Connection Set 10 mm Hose Straight

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Tank Connection Set 13 mm Hose Straight

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Lid Black 15 cm Internal Thread with Float Valve 1 Inch - 13 mm Hose Connection

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Lid Black 15 cm Internal Thread with Float Valve 1 Inch- 25 mm Hose Connection

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Filter ø 15 cm x 20 cm deep

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Lid Black 15 cm Internal Thread Spring - Vented

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Tank Connection Set Brass 90° Bend Sockett: 1/2 Inch Knee Socket, Ball Valve and Hosetail for 10 mm Hose

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Geka Connection 1/2 Inch External Thread

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Nipple Reducer 3/4 Inch x 1/2 Inch External Thread

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Installation Push-In BSP Fittings

Our Push-In BSP Fittings can be installed quickly, easily, and completely from the outside; even in areas that are not accessible from the inside. This allows connections to be made flexibly at any flat section of the water tank; without opening or dismantling the tank.

 

Simple. Fast. Flexible. Our PP tank connectors feature an external thread from ½" to 2" and an internal thread from 3/8" to 1 ½" inside the fitting.

Tip: For liquids other than water, versions with NBR seals (diesel-resistant) and FKM seals (chemical-resistant) are available

Video: Installing Push-In BSP Fitting on watertank

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At June 4, 2026
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