• For commercial & private use

40 Litre Water Tank Flat

Article#
40 litre flat water tank from high-quality MDPE. Space-saving for low height installations, strong and long-lasting.
Capacity
(Litre)
40 Litre
Dimensions
(LxWxH)
75x37x16 cm
Lid Size
cm
12 cm
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

{"9471":[{"qty":19,"shipmentDate":"March 13, 2026","delivery_time":"1-2 Days","delivery_date_range":"16 - 17 Mar"},{"qty":9999999,"shipmentDate":"April 16, 2026","delivery_time":"1-2 Days","delivery_date_range":"17 - 20 Apr"}],"9626":[{"qty":0,"shipmentDate":"March 13, 2026","delivery_time":"1-2 Days","delivery_date_range":"16 - 17 Mar"},{"qty":9999999,"shipmentDate":"April 16, 2026","delivery_time":"1-2 Days","delivery_date_range":"17 - 20 Apr"}],"9472":[{"qty":-2,"shipmentDate":"March 13, 2026","delivery_time":"1-2 Days","delivery_date_range":"16 - 17 Mar"},{"qty":9999999,"shipmentDate":"April 16, 2026","delivery_time":"1-2 Days","delivery_date_range":"17 - 20 Apr"}],"9627":[{"qty":0,"shipmentDate":"March 13, 2026","delivery_time":"1-2 Days","delivery_date_range":"16 - 17 Mar"},{"qty":9999999,"shipmentDate":"April 16, 2026","delivery_time":"1-2 Days","delivery_date_range":"17 - 20 Apr"}],"9628":[{"qty":0,"shipmentDate":"March 13, 2026","delivery_time":"1-2 Days","delivery_date_range":"16 - 17 Mar"},{"qty":9999999,"shipmentDate":"April 16, 2026","delivery_time":"1-2 Days","delivery_date_range":"17 - 20 Apr"}],"9629":[{"qty":0,"shipmentDate":"March 13, 2026","delivery_time":"1-2 Days","delivery_date_range":"16 - 17 Mar"},{"qty":9999999,"shipmentDate":"April 16, 2026","delivery_time":"1-2 Days","delivery_date_range":"17 - 20 Apr"}],"9630":[{"qty":0,"shipmentDate":"March 13, 2026","delivery_time":"1-2 Days","delivery_date_range":"16 - 17 Mar"},{"qty":9999999,"shipmentDate":"April 16, 2026","delivery_time":"1-2 Days","delivery_date_range":"17 - 20 Apr"}],"9631":[{"qty":0,"shipmentDate":"March 13, 2026","delivery_time":"1-2 Days","delivery_date_range":"16 - 17 Mar"},{"qty":9999999,"shipmentDate":"April 16, 2026","delivery_time":"1-2 Days","delivery_date_range":"17 - 20 Apr"}],"9632":[{"qty":0,"shipmentDate":"March 13, 2026","delivery_time":"1-2 Days","delivery_date_range":"16 - 17 Mar"},{"qty":9999999,"shipmentDate":"April 16, 2026","delivery_time":"1-2 Days","delivery_date_range":"17 - 20 Apr"}],"9633":[{"qty":0,"shipmentDate":"March 13, 2026","delivery_time":"1-2 Days","delivery_date_range":"16 - 17 Mar"},{"qty":9999999,"shipmentDate":"April 16, 2026","delivery_time":"1-2 Days","delivery_date_range":"17 - 20 Apr"}],"9634":[{"qty":0,"shipmentDate":"March 13, 2026","delivery_time":"1-2 Days","delivery_date_range":"16 - 17 Mar"},{"qty":9999999,"shipmentDate":"April 16, 2026","delivery_time":"1-2 Days","delivery_date_range":"17 - 20 Apr"}],"9635":[{"qty":0,"shipmentDate":"March 13, 2026","delivery_time":"1-2 Days","delivery_date_range":"16 - 17 Mar"},{"qty":9999999,"shipmentDate":"April 16, 2026","delivery_time":"1-2 Days","delivery_date_range":"17 - 20 Apr"}],"9636":[{"qty":0,"shipmentDate":"March 13, 2026","delivery_time":"1-2 Days","delivery_date_range":"16 - 17 Mar"},{"qty":9999999,"shipmentDate":"April 16, 2026","delivery_time":"1-2 Days","delivery_date_range":"17 - 20 Apr"}],"9637":[{"qty":0,"shipmentDate":"March 13, 2026","delivery_time":"1-2 Days","delivery_date_range":"16 - 17 Mar"},{"qty":9999999,"shipmentDate":"April 16, 2026","delivery_time":"1-2 Days","delivery_date_range":"17 - 20 Apr"}],"9638":[{"qty":0,"shipmentDate":"March 13, 2026","delivery_time":"1-2 Days","delivery_date_range":"16 - 17 Mar"},{"qty":9999999,"shipmentDate":"April 16, 2026","delivery_time":"1-2 Days","delivery_date_range":"17 - 20 Apr"}],"9639":[{"qty":0,"shipmentDate":"March 13, 2026","delivery_time":"1-2 Days","delivery_date_range":"16 - 17 Mar"},{"qty":9999999,"shipmentDate":"April 16, 2026","delivery_time":"1-2 Days","delivery_date_range":"17 - 20 Apr"}],"9640":[{"qty":0,"shipmentDate":"March 13, 2026","delivery_time":"21-28 Days","delivery_date_range":"14 - 23 Apr"},{"qty":9999999,"shipmentDate":"April 16, 2026","delivery_time":"21-28 Days","delivery_date_range":"19 - 29 May"}],"9641":[{"qty":0,"shipmentDate":"March 13, 2026","delivery_time":"1-2 Days","delivery_date_range":"16 - 17 Mar"},{"qty":9999999,"shipmentDate":"April 16, 2026","delivery_time":"1-2 Days","delivery_date_range":"17 - 20 Apr"}],"9642":[{"qty":0,"shipmentDate":"March 13, 2026","delivery_time":"1-2 Days","delivery_date_range":"16 - 17 Mar"},{"qty":9999999,"shipmentDate":"April 16, 2026","delivery_time":"1-2 Days","delivery_date_range":"17 - 20 Apr"}],"9643":[{"qty":0,"shipmentDate":"March 13, 2026","delivery_time":"1-2 Days","delivery_date_range":"16 - 17 Mar"},{"qty":9999999,"shipmentDate":"April 16, 2026","delivery_time":"1-2 Days","delivery_date_range":"17 - 20 Apr"}],"9644":[{"qty":0,"shipmentDate":"March 13, 2026","delivery_time":"1-2 Days","delivery_date_range":"16 - 17 Mar"},{"qty":9999999,"shipmentDate":"April 16, 2026","delivery_time":"1-2 Days","delivery_date_range":"17 - 20 Apr"}],"9645":[{"qty":0,"shipmentDate":"March 13, 2026","delivery_time":"1-2 Days","delivery_date_range":"16 - 17 Mar"},{"qty":9999999,"shipmentDate":"April 16, 2026","delivery_time":"1-2 Days","delivery_date_range":"17 - 20 Apr"}],"9646":[{"qty":0,"shipmentDate":"March 13, 2026","delivery_time":"1-2 Days","delivery_date_range":"16 - 17 Mar"},{"qty":9999999,"shipmentDate":"April 16, 2026","delivery_time":"1-2 Days","delivery_date_range":"17 - 20 Apr"}],"9647":[{"qty":0,"shipmentDate":"March 13, 2026","delivery_time":"1-2 Days","delivery_date_range":"16 - 17 Mar"},{"qty":9999999,"shipmentDate":"April 16, 2026","delivery_time":"1-2 Days","delivery_date_range":"17 - 20 Apr"}],"9648":[{"qty":0,"shipmentDate":"March 13, 2026","delivery_time":"1-2 Days","delivery_date_range":"16 - 17 Mar"},{"qty":9999999,"shipmentDate":"April 16, 2026","delivery_time":"1-2 Days","delivery_date_range":"17 - 20 Apr"}],"9649":[{"qty":0,"shipmentDate":"March 13, 2026","delivery_time":"1-2 Days","delivery_date_range":"16 - 17 Mar"},{"qty":9999999,"shipmentDate":"April 16, 2026","delivery_time":"1-2 Days","delivery_date_range":"17 - 20 Apr"}],"9650":[{"qty":0,"shipmentDate":"March 13, 2026","delivery_time":"1-2 Days","delivery_date_range":"16 - 17 Mar"},{"qty":9999999,"shipmentDate":"April 16, 2026","delivery_time":"1-2 Days","delivery_date_range":"17 - 20 Apr"}],"9651":[{"qty":0,"shipmentDate":"March 13, 2026","delivery_time":"1-2 Days","delivery_date_range":"16 - 17 Mar"},{"qty":9999999,"shipmentDate":"April 16, 2026","delivery_time":"1-2 Days","delivery_date_range":"17 - 20 Apr"}]}
{"inStock":"In Stock","deliveryTime":"Delivery Time:","deliveryBetween":"Delivery between","itemsLeft":"pc. available","available":"Available","estimatedDeliveryTime":"Delivery Time:","estimatedDeliveryBetween":"Estimated delivery between","selectLocation":"Select Location"}
{"country_id":"","postcode":"","has_address":false}
{"AT":"Austria","BE":"Belgium","CH":"Switzerland","CZ":"Czechia","DE":"Germany","DK":"Denmark","ES":"Spain","FI":"Finland","FR":"France","HR":"Croatia","IT":"Italy","LU":"Luxembourg","NL":"Netherlands","NO":"Norway","PL":"Poland","PT":"Portugal","SE":"Sweden"}
{"in_stock":"text-green-700","limited_in_stock":"text-orange-400","out_of_stock":"text-rose-700"}
{"in_stock":"text-green-700","limited_in_stock":"text-stone-700","out_of_stock":"text-orange-800"}
As low as: 133.–
160.93 Incl. Tax
90% available from stock
Secure payment: iDEAL, PayPal, Credit Card & Bancontact
Personal advice & fast support

Description / 40 Litre Water Tank Flat

40 litre flat/low-profile water tank made from high-quality MDPE – flat design, perfect for limited spaces with low height.

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.
  • 12 cm screw lid (unvented) for secure filling and cleaning.
  • Inspection opening: 10.6 cm for easy access and cleaning
  • Dimensions: 75 cm × 37 cm × 16 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

  • Is a vented lid available for this water tank?
    This water tank is supplied only with an unvented 12 cm lid. Venting can be added with our tank vents.
  • 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

More Information

General Information
Capacity (L) 40
Dimensions (LxWxH cm) 75 x 37 x 16
Height incl. Lid (cm) 16
Shape & Type Flat Tank
Weight (kg) 4.5
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 No
Design Features
Baffles No
Lid Size (cm) 12 cm
Inspection Opening (cm) 10,6 cm
Lid vented No
Lid with Float No
3D file available Yes, on request
Connections & Installation
BSP Connections Yes
BSP Connection Size 1/2"
Spin Weld Outlet possible Yes
Installation Type flat, horizontal
Mounting Options plastic-coated steel strips / stainless steel brackets / frames
Accessory Compatibility Brass & Plastic, Filters, Float-Valves

Alternatives

-20%
40 Litre Underslung Tank - Traffic Black (Ral 9017)
(LxWxH) 75x37x16 cm
Lid Size 12 cm
154.–
As low as 123.20
20% Discount
In Stock
(LxWxH) 70x31x16.5 cm
Lid Size 12 cm
As low as 96.–
In Stock
(LxWxH) 80x35x25 cm
Lid Size 12 cm
As low as 143.–
In Stock
(LxWxH) 60x48x24 cm
Lid Size 12 cm
As low as 141.–
In Stock
-20%
69 Litre Underslung Tank for Volkswagen Transporter T5 & T6
(LxWxH) 100x96x19.5 cm
Lid Size 12 cm
359.–
As low as 287.20
20% Discount
In Stock
(LxWxH) 43x29x33 cm
Lid Size 15 cm
As low as 112.–
In Stock
(LxWxH) 50x30x37 cm
Lid Size 15 cm
As low as 117.–
In Stock