Powertank COMPACT
Powertank COMPACT 125 fixed speed – 2600070
- Established 1975
- Trusted by thousands of customers
Powertank COMPACT – Fixed Speed Whole House Water Pressure Booster: 125ltr
The Powertank COMPACT has been specifically designed for smaller properties with low water pressure and flow and where space is at a premium e.g. apartments, cottages, townhouses. Fitting into the space of a standard kitchen unit, the Powertank COMPACT is a similar size to a washing machine so can be hidden away behind a cupboard door. The electronic controller automatically starts and stops the pump when a drop in pressure is sensed i.e. 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
– Integral overflow weir
– Minimal installation required
– Adjustable digital display flow controller (Variable Speed Option)
– Dry run protection with auto restart (time delay)
– AB Air gap
– Suitable for up to Fluid Category 5
System Connections:
Inlet: 1/2″ BSP
Outlet: 1″ BSP
Overflow: 1 1/2″
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: Presflo 1.5 Controller supplied with 2ltr pressure vessel
Mains Power Cable: 2m x 1mm ² 3 core fitted with 13 amp fuse mains plug
Current Input: 3.4 amp
Useable Water Volume: 125L
Tank Weight Empty: 27kg
Tank Weight Full 1ltr = 1 kg plus weight of empty tank
Access Cover Diameter: 168mm
The Compact will produce
40 litres per min @ 3 Bar
NOTE: A minimum of 0.5 bar incoming pressure is required for our Standard Fill Valve
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 Range of Water Pressure boosters:
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.

More about this product
Key Features
- Non-corrosive holding tank (WRAS approved material)
- Pre-fitted WRAS approved fill valve
- Integral overflow weir
- Minimal installation required
- Adjustable digital display flow controller
- Dry run protection with auto restart (time delay)
- AB Air gap
- Suitable for up to Fluid Category 5
- CE Certified Product
Connections & Size
- Inlet: ½” BSP
- Outlet: 1” BSP
- Overflow: 1 ½”
- Drain Off: 1” BSP
-
Fixed Speed Option
- 240 volt, 50Hz
- Presflo 1.5 supplied with 2ltr pressure vessel
- 3.4 amp
- 2mtr x 1mm² 3 core fitted with 5 amp fuse main plug
- 27kg
- 1ltr = 1 kg plus weight of empty tank
- 190mm
Standard delivery:
Standard delivery is free on most orders. Some items may incur a delivery charge depending on weight, size or value. Any applicable charge will be displayed at checkout.
Deliveries will typically be made between 7am and 6pm, Monday to Friday (excluding public holidays).
Next day delivery:
Next working day delivery is available for a £16.50 + VAT delivery charge.
Orders must be placed before 12 noon to qualify for next working day delivery. Orders placed after 12 noon on Thursday but before noon on Friday will be delivered the following Monday. Orders placed after 12 noon on Friday will be delivered on Tuesday.
Pallet/Large/Difficult items:
Some large, heavy or difficult to transport items may incur an additional delivery charge. Please contact us for a delivery quote before ordering.
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Frequently Asked Questions
Quick answers to common questions about the Powertank COMPACT 125 fixed speed – 2600070. For technical specifications, see the product details above; for sizing or installation advice, contact our team. If you have any other questions, we're happy to help.
What is a mains pressure boosting system?
A mains pressure boosting system increases the pressure and flow of water from the incoming mains supply into a property. It typically combines a pump and a storage or expansion tank, drawing water from the mains and delivering it to taps, showers and appliances at a stronger, more consistent pressure. They are used where the incoming mains is too weak to serve modern outlets reliably.
When do I need a mains booster pump?
You normally need a mains booster if static mains pressure is below 1.5 to 2 bar, if showers run weakly when other taps are open, or if combi boilers struggle to deliver hot water. Anglian Pumping recommends checking static pressure at the stop tap before specifying a system, then choosing a model rated for the number of bathrooms and outlets in the property.
What size mains booster do I need for my home?
Sizing depends on the number of bathrooms, the type of fittings and the static mains pressure. As a guide, a 1 to 2 bathroom property with combi boiler or single shower often needs 1.6 to 3 bar boost. A 2 to 3 bathroom property typically needs 3 to 4.5 bar with an integral break tank. Larger homes need a tank-and-pump system such as the DAB Esybox with Esytank or a Powertank set.
What is a water booster pump?
A water booster pump increases the pressure of an existing water supply to give stronger flow at taps, showers and appliances. It can be a small inline pump fitted to the incoming mains, or a larger pump and tank set that draws from a break tank to feed the whole house. Boosters do not create water – they raise the pressure of the water already coming in.
What is the difference between an inline booster and a tank-and-pump booster?
An inline booster connects straight onto the incoming mains and is limited to 12 litres per minute under UK water regulations – examples include the Salamander HomeBoost and WaterBoost WB-Compact. A tank-and-pump booster, such as the Grundfos Home Booster or DAB Esybox with Esytank, draws from a break tank and can deliver much higher flow rates for larger homes with multiple bathrooms.
What is a variable speed booster pump?
A variable speed booster uses an inverter to adjust pump speed in real time to match demand. It maintains constant pressure as outlets open and close, runs more quietly than a fixed-speed pump and typically saves up to 50 per cent of the energy a fixed-speed equivalent would use. The DAB Esybox, DAB Esybox Mini 3 and Grundfos Scala2 are common variable speed examples.




