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Powertank SLIMLINE – Variable Speed – 200, 350 or 450ltr

3YearWarranty Made-in-Britain

Increases Pressure & Flow Designed for use where floor space is limited.

Output approx 80 l/min @ 3 Bar Tank Size: 200 & 350L

Manufacturer: Powertank
Extra Options
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£180.00 inc. VAT
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£218.40 inc. VAT
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£1,022.00 inc. VAT
UV systems deactivate chlorine-resistant parasites such as Cryptosporidium and Giardia, and harmful bacteria like Legionella & E.coli which may be present in some incoming water supplies.

1-3 Working Day Delivery - Pallet (UK Mainland Only)

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Powertank SLIMLINE – Variable Speed Whole House Water Pressure Booster

The Powertank Slimline range can fit through a standard doorway. This makes it very convenient for new or existing properties as it can be easily fitted under stairs, in a garage, or in a utility room. The slimline range is ideal for 3 – 5 bedroom houses, with poor water pressure and flow and where floor space is limited. It is electronically controlled through a flow switch unit which starts and stops the pump automatically when a tap is opened and closed.

Key Features:

– Non-corrosive holding tank (WRAS approved material)
– Designed for potable water
– Pre-fitted WRAS approved fill valve
– Minimal installation requirement
– Adjustable digital display flow controller (Variable Speed Option)
– Dry run protection with auto restart (time delay)
– AF Air gap
– Suitable for up to Fluid Category 4

System Connections:

Inlet: 1/2″ BSP
Outlet: 1″ BSP
Overflow: 1 1/4″ BSP
Drain Off: 1″ BSP

If there are any special Inlet or Overflow requirements please let us know prior to placing an order. 

Technical Info:

Power Supply: 240V, 50Hz
Controller: Steadypress M/T 07 c/w 8ltr pressure vessel
Mains Power Cable: 2m x 1mm ² 3 core fitted with 5 amp fuse mains plug
Current Input: 6.3 amp
Useable Water Volume: 200ltr or 300ltr
Tank Weight Empty: 200ltr = 32kg, 350ltr = 35kg, , 450ltr = 39kg
Tank Weight Full 1ltr = 1 kg plus weight of empty tank
Access Cover Diameter: 285mm

The Powertank will produce

80 litres per min @ 3 Bar

NOTE: A minimum of 0.5 bar incoming pressure is required for our Standard Fill Valve

You have:

* A property without enough pressure and/or flow for your household requirements
* A pressurised hot water system ie. a Combi Boiler or Megaflow system
* 3 or more showers

You want:

* Water on demand
* More pressure and flow from your shower
* Good flow of pressure to multiple water outlets
* Fully Automatic Operation
* Low Maintenance
* Easy Fit and Commission
* Very Quiet compared to other Systems

BENEFITS of the Powertank Utility Slimline House booster:

Water on Demand
Good Pressure & Flow to all Outlets*
Low Maintenance
Very Quiet Operation
Energy Saving Options
Installer Friendly Design
Fully Automatic Operation
In Built Pump Protection

* Subject to being correctly plumbed. Shared pipework may affect pressures.

3YearWarranty Made-in-Britain

Additional information

Weight 33 kg
Dimensions Length: 584 mm Width: 584 mm Height: 1190 mm

Performance Data


Additional Information

Why do I need a tank and a pump?
To increase water pressure and flow, there must first be a supply of water to pump from. If you are not getting enough from your mains then you need a break tank to store your water supply ready for when you need it. This water can then be pumped to your outlets on demand giving you plentiful water pressure and supply. Take control of your own water!

Why can’t I just fit the pump on the mains?
Water Authority byelaws prevent a pump being directly connected to the mains supply so when your mains water pressure needs a boost, a break tank must be incorporated into the system. There is a regulation that says you can pump up to 12l/min off the mains which was originally brought in because of pressure washers, but 12 l/min is just about enough to run 1 shower without water being used elsewhere and would only suggest these for single occupancy properties.

Will it be noisy?
Incorporating an ultra-quiet running submersible pump within a tank of water is about as quiet as you can get, gone are the days of feeling like your house is going to take off every time you turn a tap on! The variable speed version is also quieter still as the pump is not running full throttle unless demand is very high.

Is it easy to install?
Our all-in-one tank and pump unit is designed to remove the headache for your plumber, just fit it and forget it. We check every unit here before it leaves us to ensure that it is in perfect working order when it gets to you. Our simple installation guide makes it very easy for a qualified plumber to fit.

Where am I going to put it?
Unfortunately there is no small way to store a tank full of water, but this version is designed for properties where floor space is at a premium. The ideal place to put this system is as close to the mains stop tap as possible, and on the same level is preferable. It can be installed in a loft if there are no other options, but you might then want to think about a bigger tank as the refill rate will be slower and it will need to be supported on strong beams. This system can also be stored outside but will need to be in a sheltered environment (i.e. an insulated shed) with absolutely no risk of frost.

It seems very expensive, why should I buy your version?
Our Powertank Slimline is made from high quality components and materials giving long lasting and reliable use. Guaranteed to boost your water pressure you can fit it and forget it, enjoying reaping the benefits of finally having the water supply you require and more. Easy to install this provides a compact low cost solution to water pressure problems.

What extra does the Variable Speed version give me?
The Variable speed version has an intelligent pump controller that will supply a smooth flow of water to every outlet by maintaining a constant pressure throughout your property, speeding up and slowing down the pump to suit demand. When you are in the shower you no longer need to sigh as your pressure drops away due to the loo flushing or the kitchen tap running. This version ensures all outlets maintain a set pressure no matter how many other outlets are being used. *

You say it is Energy Saving – How?
By varying the speed of the pump to only produce the required water supply the controller is reducing the amount of energy that the pump needs and in return reducing running costs. Incorporating an 8 litre pressure vessel, this stores water at a set pressure to supply any small water requirements without having to start the pump (i.e getting a glass of water or flushing the loo), then when the pump needs to kick in it will keep running until this is filled back up for future low demands.

* Subject to being correctly plumbed. Shared pipework may affect pressures.

Quick Installation Checklist

Quick Check List for Installing Your Powertank

  • Powertank should be mounted on a solid foundation. The recommended surface for a Powertank is a concrete plinth or floor. We do not recommend installation of Powertanks on wooden structures where noise or vibration may be an issue.
  • Fill the Powertank with water through the fill valve “before” connecting the top discharge pipe work to allow air to escape from the pump.
  • Pipe work should be easy to disassemble. Consider the use of “Speedfit” or similar plastic pipework systems, or flexible hosing with a suitable pressure rating, for the last 1.0 mtr (approx.) of pipe work connecting to the unit. This will assist in reducing noise transmission, and avoid stressing the Powertank connections.

Delivery and Handling

The weight and size of the Powertank range may require the aid of lifting equipment and must be handled in a safe manner.

For full instructions, to be read before installation, please see Powertank Installation Guide>

14 reviews for Powertank SLIMLINE – Variable Speed – 200, 350 or 450ltr

  1. 5 out of 5

    Kim B. (verified owner)

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    Fantastic company with extremely knowledgeable, helpful, friendly staff who took the time to ensure I was purchasing the right product for my needs. Excellent service throughout to prompt delivery giving updates on delivery times. Wide range of products and I would definitely recommend them.

  2. 5 out of 5

    Brian (verified owner)

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    Waiting for installation

  3. 5 out of 5

    Kujdesi Gjeta (verified owner)

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    Very helpful

  4. 5 out of 5

    Allan Muckart (verified owner)

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    Absolutely delighted. Changed a disaster water supply in to a perfect, subtle, quiet, steady supply. Very happy. Thanks.

  5. 4 out of 5

    Hugh B. (verified owner)

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    not yet put in but happy so far

  6. 5 out of 5

    Ben (verified owner)

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    Could not be happier with it. Now installed, it’s quieter than expected (hard piped, too) and performs exceptionally well. Seems no matter how many outlets you open, there’s just more and more water available – exactly what I needed and would highly recommend this product for people with multiple bathrooms. There are very few places in the country where you can get this kind of performance in a domestic property off the mains.
    The only criticism I have is it’s supplied with a 1/2” filling connection. I’m sure I would get a faster filling rate (it took 45 minutes from empty) if it was 3/4”. I noticed there’s an upgrade for larger tanks, not sure it’s quite worth £100 odd mind. That being said I’m glad I went for the 300 litre version!
    Overall, it’s extremely impressed with it.

  7. 3 out of 5

    Richard Taylor (verified owner)

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    Having it plumbed in next week, can’t say yet.

  8. 5 out of 5

    Michael Tam (verified owner)

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  9. 5 out of 5

    Ashok M. (verified owner)

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    Very Good Quality Product, works well, Good High water pressure in all Taps

  10. 5 out of 5

    Michael Burkitt (verified owner)

    Great customer service with advice before we purchased. AMAZINGLY quiet. Simple to install even for a DIYer and a massive improvement for our 2nd floor bathroom.

  11. 5 out of 5

    Olinto Fiorentini (verified owner)

    Best pump ever , great quality

  12. 5 out of 5

    Alan Barnwell (verified owner)

    Dose what it says brilliant

  13. 5 out of 5

    steve shoesmith (verified owner)

    installed this in a property that had 3 bathrooms and previous issues with shower stopping if someone else used a toilet or another shower. once installed customer was over the moon with the results.

  14. 5 out of 5

    Richard Woodward (verified owner)

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    Great pump! Can run 3 showers at once with no loss of flow

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For Technical Help & Advice Call 01633 244777 or Email

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