Salamander TankBoost
Salamander TankBoost 450L TNK-450-SUB
- Established 1975
- Trusted by thousands of customers
Salamander TankBoost 450L TNK-450-SUB
The Salamander TankBoost 450L is an all-in-one mains water booster system designed to enhance water pressure and flow in properties with mains-fed systems, such as combination boilers or unvented cylinders.
More about this product
Overview
The Salamander TankBoost 450L is an all-in-one mains water booster system designed to enhance water pressure and flow in properties with mains-fed systems, such as combination boilers or unvented cylinders. It comprises a 450-litre water storage tank integrated with a submersible pump, capable of delivering up to 3.0 bar pressure and a flow rate of up to 80 litres per minute.
This system is ideal for boosting water supply across multiple outlets and floors simultaneously, ensuring consistent performance even during high-demand periods. For properties requiring additional water capacity, an extra 450-litre storage tank can be linked to the primary TankBoost unit. It’s important to note that when connecting additional storage, the supplementary tank should have the inlet to allow water flow through both tanks, and the ball valve should be transferred from the primary TankBoost to the storage inlet. Additionally, the additional storage tank must match the primary tank to avoid water imbalance.
The TankBoost 450L features a high-quality, stainless steel submersible pump and is designed for cold water use only. It can, however, be used to increase cold water flow rates and pressure to any mains hot water system, such as unvented cylinders and combi boilers. All TankBoost units have a ½” brass male inlet connection and a 1” female outlet. It is recommended to use 28mm diameter pipework from the TankBoost to avoid restricting potential flow rates, which can then be reduced to 22mm or 15mm pipework closer to the outlets.
For commercial applications where there is a risk of backflow contamination with fluid Category 5, a TankBoost 450L model fitted with a type AB air gap is available, providing necessary backflow protection.
The TankBoost is an all-in-one system consisting of a water storage tank and an integrated submerged pump. It offers up to 3.0 Bar and 80L/min – ultimately, delivering an impressive level of water pressure and flow, even when multiple outlets are in use.
Salamander’s TankBoost has been designed specifically to improve the delivery of cold water in a mains-fed system, however it may also be used alongside unvented cylinders and combi boilers, increasing the cold water flow rates and pressure to any mains hot water system. It is important to note that this may restrict the flow rate of hot water that can be produced.
Key features
- Allows for the use of multiple outlets simultaneously
- Suitable for a mains-fed system
- Designed for cold water, but may b e used to increase cold water flow rates and pressure to any mains hot water system such as unvented cylinders and combi-boilers
- Please note that combi-boilers may restrict the flow rate of hot water that is able to be produced
- Additional water storage units are available to increase capacity
- High-quality submersible centrifugal multi-stage stainless steel pump
- Noise rating: dBA 44.7
- Tank size: 450L
- Fuse rating: 5A
- Inlet connection: ½’’ BSP Male
- Outlet connection: 1’’ BSP Female
Specification
| Product | Salamander TankBoost 450L TNK-450-SUB |
|---|---|
| Power | 730 W |
| Supply | 230 V single-phase, 50 Hz |
| Max. flow | 80 l/min |
| Max. pressure | 3 bar |
| Outlet | 1″ BSP Female |
| Capacity | 450 litres |
| Warranty | 2 years |
| Noise level | 44.7 dB(A) |
| Height | 1670 mm |
| Width | 600 mm |
| Depth | 640 mm |
| Weight (empty) | 67.0 kg |
| Weight (filled) | 517.0 kg |
| Pump type | Submersible Centrifugal Multi-Stage Pump |
| Pump body / impeller | Stainless Steel |
| Protection | IPX8 |
| Rated current | 4.2 A |
| Cable | 8 m (Plug not supplied) |
| Fuse rating | 5 A |
| Inlet | 1/2″ BSP Male |
| Liquid temperature | 4 °C to 20 °C |
| Pressure vessel | 8L Vessel with 1.5 bar air Pre-Charge |
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 Salamander TankBoost 450L TNK-450-SUB. 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.

