• For commercial & private use

51 Litre Flat Tank

Article#
51 litre flat water tank from high-quality MDPE.
View full description
Capacity
(Litre)
51 Litre
Dimensions
(LxWxH)
120x40x12 cm
Lid Size
cm
12 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: 151.–
179.69 Incl. Tax
High availability & ready to ship
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Description / 51 Litre Flat Tank

51 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: 120 cm × 40 cm × 12 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

Resistance Chart Fluids Tanks (Size: 88 KB)
WRAS Certificate Potable Water Food Grade Temperature (Size: 266 KB)
RoHS 3 and REACH Statement (Size: 294.4 KB)
Technical Drawing (Size: 251.4 KB)

More Information

General Information
Capacity (L) 51
Dimensions (LxWxH cm) 120 x 40 x 12
Height incl. Lid (cm) 12
Shape & Type Flat Tank
Weight (kg) 8
Material & Durability
Material MDPE
Wall Thickness (mm) 5
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) 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

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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