• For commercial & private use

350 Litre Water Tank Upright Baffled

Article#
350 litre upright slimline water tank, manufactured from durable MDPE material. Space-saving for installation in tight areas, built for long service life.
View full description
Capacity
(Litre)
350 Litre
Dimensions
(LxWxH)
99x52x75 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

{"5455":[{"qty":26,"shipmentDate":"September 7, 2026","delivery_time":"3-7 Days","delivery_date_range":"10 - 14 Sep"},{"qty":9999999,"shipmentDate":"October 8, 2026","delivery_time":"3-7 Days","delivery_date_range":"11 - 15 Oct"}],"5506":[{"qty":1,"shipmentDate":"September 7, 2026","delivery_time":"3-7 Days","delivery_date_range":"10 - 14 Sep"},{"qty":9999999,"shipmentDate":"October 8, 2026","delivery_time":"3-7 Days","delivery_date_range":"11 - 15 Oct"}],"5486":[{"qty":0,"shipmentDate":"September 7, 2026","delivery_time":"3-7 Days","delivery_date_range":"10 - 14 Sep"},{"qty":9999999,"shipmentDate":"October 8, 2026","delivery_time":"3-7 Days","delivery_date_range":"11 - 15 Oct"}],"5485":[{"qty":0,"shipmentDate":"September 7, 2026","delivery_time":"3-7 Days","delivery_date_range":"10 - 14 Sep"},{"qty":9999999,"shipmentDate":"October 8, 2026","delivery_time":"3-7 Days","delivery_date_range":"11 - 15 Oct"}],"5519":[{"qty":0,"shipmentDate":"September 7, 2026","delivery_time":"3-7 Days","delivery_date_range":"10 - 14 Sep"},{"qty":9999999,"shipmentDate":"October 8, 2026","delivery_time":"3-7 Days","delivery_date_range":"11 - 15 Oct"}],"5514":[{"qty":0,"shipmentDate":"September 7, 2026","delivery_time":"3-7 Days","delivery_date_range":"10 - 14 Sep"},{"qty":9999999,"shipmentDate":"October 8, 2026","delivery_time":"3-7 Days","delivery_date_range":"11 - 15 Oct"}],"5510":[{"qty":0,"shipmentDate":"September 7, 2026","delivery_time":"3-7 Days","delivery_date_range":"10 - 14 Sep"},{"qty":9999999,"shipmentDate":"October 8, 2026","delivery_time":"3-7 Days","delivery_date_range":"11 - 15 Oct"}],"5465":[{"qty":0,"shipmentDate":"September 7, 2026","delivery_time":"3-7 Days","delivery_date_range":"10 - 14 Sep"},{"qty":9999999,"shipmentDate":"October 8, 2026","delivery_time":"3-7 Days","delivery_date_range":"11 - 15 Oct"}],"5495":[{"qty":0,"shipmentDate":"September 7, 2026","delivery_time":"3-7 Days","delivery_date_range":"10 - 14 Sep"},{"qty":9999999,"shipmentDate":"October 8, 2026","delivery_time":"3-7 Days","delivery_date_range":"11 - 15 Oct"}],"5478":[{"qty":0,"shipmentDate":"September 7, 2026","delivery_time":"3-7 Days","delivery_date_range":"10 - 14 Sep"},{"qty":9999999,"shipmentDate":"October 8, 2026","delivery_time":"3-7 Days","delivery_date_range":"11 - 15 Oct"}],"5498":[{"qty":0,"shipmentDate":"September 7, 2026","delivery_time":"3-7 Days","delivery_date_range":"10 - 14 Sep"},{"qty":9999999,"shipmentDate":"October 8, 2026","delivery_time":"3-7 Days","delivery_date_range":"11 - 15 Oct"}],"5469":[{"qty":0,"shipmentDate":"September 7, 2026","delivery_time":"3-7 Days","delivery_date_range":"10 - 14 Sep"},{"qty":9999999,"shipmentDate":"October 8, 2026","delivery_time":"3-7 Days","delivery_date_range":"11 - 15 Oct"}],"5471":[{"qty":0,"shipmentDate":"September 7, 2026","delivery_time":"3-7 Days","delivery_date_range":"10 - 14 Sep"},{"qty":9999999,"shipmentDate":"October 8, 2026","delivery_time":"3-7 Days","delivery_date_range":"11 - 15 Oct"}],"5458":[{"qty":0,"shipmentDate":"September 7, 2026","delivery_time":"3-7 Days","delivery_date_range":"10 - 14 Sep"},{"qty":9999999,"shipmentDate":"October 8, 2026","delivery_time":"3-7 Days","delivery_date_range":"11 - 15 Oct"}],"5422":[{"qty":0,"shipmentDate":"September 7, 2026","delivery_time":"3-7 Days","delivery_date_range":"10 - 14 Sep"},{"qty":9999999,"shipmentDate":"October 8, 2026","delivery_time":"3-7 Days","delivery_date_range":"11 - 15 Oct"}],"5421":[{"qty":0,"shipmentDate":"September 7, 2026","delivery_time":"3-7 Days","delivery_date_range":"10 - 14 Sep"},{"qty":9999999,"shipmentDate":"October 8, 2026","delivery_time":"3-7 Days","delivery_date_range":"11 - 15 Oct"}],"5439":[{"qty":0,"shipmentDate":"September 7, 2026","delivery_time":"3-7 Days","delivery_date_range":"10 - 14 Sep"},{"qty":9999999,"shipmentDate":"October 8, 2026","delivery_time":"3-7 Days","delivery_date_range":"11 - 15 Oct"}],"5414":[{"qty":0,"shipmentDate":"September 7, 2026","delivery_time":"3-7 Days","delivery_date_range":"10 - 14 Sep"},{"qty":9999999,"shipmentDate":"October 8, 2026","delivery_time":"3-7 Days","delivery_date_range":"11 - 15 Oct"}],"5450":[{"qty":0,"shipmentDate":"September 7, 2026","delivery_time":"3-7 Days","delivery_date_range":"10 - 14 Sep"},{"qty":9999999,"shipmentDate":"October 8, 2026","delivery_time":"3-7 Days","delivery_date_range":"11 - 15 Oct"}],"5433":[{"qty":0,"shipmentDate":"September 7, 2026","delivery_time":"3-7 Days","delivery_date_range":"10 - 14 Sep"},{"qty":9999999,"shipmentDate":"October 8, 2026","delivery_time":"3-7 Days","delivery_date_range":"11 - 15 Oct"}],"5443":[{"qty":0,"shipmentDate":"September 7, 2026","delivery_time":"3-7 Days","delivery_date_range":"10 - 14 Sep"},{"qty":9999999,"shipmentDate":"October 8, 2026","delivery_time":"3-7 Days","delivery_date_range":"11 - 15 Oct"}],"5446":[{"qty":0,"shipmentDate":"September 7, 2026","delivery_time":"3-7 Days","delivery_date_range":"10 - 14 Sep"},{"qty":9999999,"shipmentDate":"October 8, 2026","delivery_time":"3-7 Days","delivery_date_range":"11 - 15 Oct"}],"5502":[{"qty":0,"shipmentDate":"September 7, 2026","delivery_time":"3-7 Days","delivery_date_range":"10 - 14 Sep"},{"qty":9999999,"shipmentDate":"October 8, 2026","delivery_time":"3-7 Days","delivery_date_range":"11 - 15 Oct"}],"5477":[{"qty":0,"shipmentDate":"September 7, 2026","delivery_time":"3-7 Days","delivery_date_range":"10 - 14 Sep"},{"qty":9999999,"shipmentDate":"October 8, 2026","delivery_time":"3-7 Days","delivery_date_range":"11 - 15 Oct"}],"5435":[{"qty":0,"shipmentDate":"September 7, 2026","delivery_time":"3-7 Days","delivery_date_range":"10 - 14 Sep"},{"qty":9999999,"shipmentDate":"October 8, 2026","delivery_time":"3-7 Days","delivery_date_range":"11 - 15 Oct"}],"5410":[{"qty":0,"shipmentDate":"September 7, 2026","delivery_time":"3-7 Days","delivery_date_range":"10 - 14 Sep"},{"qty":9999999,"shipmentDate":"October 8, 2026","delivery_time":"3-7 Days","delivery_date_range":"11 - 15 Oct"}],"5426":[{"qty":0,"shipmentDate":"September 7, 2026","delivery_time":"3-7 Days","delivery_date_range":"10 - 14 Sep"},{"qty":9999999,"shipmentDate":"October 8, 2026","delivery_time":"3-7 Days","delivery_date_range":"11 - 15 Oct"}],"5493":[{"qty":0,"shipmentDate":"September 7, 2026","delivery_time":"3-7 Days","delivery_date_range":"10 - 14 Sep"},{"qty":9999999,"shipmentDate":"October 8, 2026","delivery_time":"3-7 Days","delivery_date_range":"11 - 15 Oct"}]}
{"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: 366.–
435.54 Incl. Tax
High availability & ready to ship
Secure payment with PayPal, Credit Card & Klarna
Personal expert advice & quick support

Description / 350 Litre Water Tank Upright Baffled

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

Features & Benefits

  • 6-7 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
  • Integrated baffles reduce liquid movement and improve stability during transport
  • Food-safe, UV-resistant and chemical-resistant; REACH-compliant
  • Temperature resistant for water up to +70 °C

Installation & Handling

  • The 1" 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: 99 cm × 52 cm × 81 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 are baffles and why are they useful?
    They reduce liquid movement and improve stability during transport.
  • 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: 627.3 KB)
WRAS Certificate Potable Water Food Grade Temperature (Size: 266 KB)
RoHS 3 and REACH Statement (Size: 294.4 KB)

More Information

General Information
Capacity (L) 350
Dimensions (LxWxH cm) 99 x 52 x 75
Height incl. Lid (cm) 81
Shape & Type Vertical Tank
Weight (kg) 24.5
Material & Durability
Material MDPE
Wall Thickness (mm) 6
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 Yes
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"
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

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

Press to skip carousel

Alternatives

325 Litre Water Tank Upright Baffled made from natural translucent Polyethylen with screw lid

325 Litre Water Tank Upright Baffled

(LxWxH) 110x37.5x87.5 cm
Lid Size 20 cm
As low as 370.–
At September 17, 2026
250 Litre Water Tank Upright Baffled made from natural translucent Polyethylen with screw lid

250 Litre Water Tank Upright Baffled

(LxWxH) 110x32.5x82.5 cm
Lid Size 15 cm
As low as 318.–
In Stock
400 Litre Water Tank Upright Baffled

400 Litre Water Tank Upright Baffled

(LxWxH) 125x35x101 cm
Lid Size 15 cm
As low as 448.–
In Stock
350 Litre Water Tank Flat Baffled made from natural translucent Polyethylen with screw lid

350 Litre Water Tank Flat Baffled

(LxWxH) 99x75x52 cm
Lid Size 15 cm
As low as 355.–
In Stock
350 Litre Weight Tank made from natural translucent Polyethylen with screw lid

350 Litre Weight Water Tank with Notches

(LxWxH) 95x50x85.5 cm
Lid Size 12 cm
As low as 359.–
In Stock
-20%
300 Litre storage Tank Round horizontal made from blue Polyethylen with screw lid

300 Litre Storage Tank Round Horizontal – (RPH-Series)

(LxWxH) 110x62.5x70.5 cm
Lid Size 20 cm
219.–
175.20
20% Discount
At September 14, 2026
-10%
300 Litre Rectangular Upright storage Tank made from blue Polyethylen with screw lid

300 Litre Rectangular Upright Storage Tank – (RPRK-Series)

(LxWxH) 80x70x65.5 cm
Lid Size 20 cm
264.–
237.60
10% Discount
In Stock
View more about 325 Litre Water Tank Upright Baffled View more about 250 Litre Water Tank Upright Baffled View more about 400 Litre Water Tank Upright Baffled View more about 350 Litre Water Tank Flat Baffled View more about 350 Litre Weight Water Tank with Notches View more about 300 Litre Storage Tank Round Horizontal – (RPH-Series) View more about 300 Litre Rectangular Upright Storage Tank – (RPRK-Series)
We use Cookies

We use cookies to make our website work properly. We also integrate tools from cooperation partners for statistics on the use of our website. This serves both to optimize the website, to ensure its functionality, to create user profiles and to display interest-based advertising. Your personal data will also be processed here. This data is also disclosed for e.g. google.com, bing.com and hotjar.com. If necessary, these third parties process your personal data for additional, own purposes, together with us or on our behalf. You can find out more about google.com's privacy policy.

By clicking on "OK" you agree to the use of our cookies and cookies from third parties such as google.com. By clicking on "Open settings" you can make an individual selection and object to the use of cookies from third parties. You can find more information in our Privacy Policy for more information about how we handle privacy.

Cookie Preferences

Here you can determine which types of cookies and technologies we may use. Depending on your selection, personal data may be processed and transmitted to service providers. Some service providers may also process data in third countries. For more information, please see our privacy policy.

Essential cookies are small text files that are stored by your browser on your device to store certain information. This includes, for example, the products in your shopping cart. From the information saved and sent back, the respective website recognizes that you have already accessed and visited it with the browser of your device. We use this information to optimized design and display the website for you.
Cookies for statistical analysis collect pseudonymised information on the basis of a random identifier about how our website is used in order to improve its attractiveness, content and functionality. These cookies help us to determine whether, which, how often and for how long subpages of our website are visited and which content users are particularly interested in. Furthermore, e.g. search terms, the country or region of access, as well as the proportion of mobile devices that access our websites are recorded. We use this information to create statistics to customize the content of our website to your needs and to optimize our offer. The legal basis for this collection and processing is our legitimate interest (Art. 6 Para. 1 Point f GDPR). You can object to this processing.
Preference cookies enable our website to remember information that affects the way our website behaves or looks, like your preferred language or the region you are in. The legal basis for this collection and processing is our legitimate interest (Art. 6 Para. 1 Point f GDPR). You can object to this processing.
These cookies are set by external advertising partners and are used to create profiles and track data across multiple websites. If you accept these cookies, we can show our advertisements on other websites based on your user profile and your preferences. These cookies also store data on how many visitors have seen or clicked on our advertising in order to optimize advertising campaigns. The legal basis for this collection and processing is our legitimate interest (Art. 6 Para. 1 Point f GDPR). You can object to this processing.