WaterBoost – CAT 5 range
WaterBoost Sentry WB-K15 CAT 5 Kiosk Booster
- Established 1975
- Trusted by thousands of customers
The WaterBoost Sentry WB-K15 is a CAT 5 kiosk booster: a 15 litre tank with a type AB air gap and a WaterBoost WB-Compact 3.0 variable speed booster, delivering up to 3.0 bar at up to 12 l/min.
Use it for bin stores, bib taps, irrigation, window cleaning or any CAT 5 application. A robust IP54 GRP kiosk with a full opening, hinged, lockable door houses the set, and you can mount it on a wall or floor, inside or outside.
More about this product
Product overview
The WaterBoost Sentry WB-K15 is a single-pump CAT 5 booster set. Its 15 litre polyethylene tank has a type AB air gap for Fluid Category 5 backflow protection, and a WaterBoost WB-Compact 3.0 variable speed booster delivers up to 3.0 bar at up to 12 l/min.
The WB-Compact 3.0’s variable speed inverter motor adjusts its output to match demand, giving smooth, stable pressure at a measured 40 dB(A). Built-in WiFi connects it to the DConnect app for remote monitoring and control, and it supports voice commands through Google Home and Amazon Alexa.
A robust IP54 GRP enclosure with a full opening, hinged, lockable door houses the whole set. You can mount it on a wall or floor, internally or externally, and all mechanical and electrical connections terminate outside the kiosk: ½″ BSP inlet and outlet, a ¾″ overflow and a 20 mm electrical entry. A 230 V AC frost heater is available as an option.
Key features
Typical applications
Technical specifications
| Brand / Model | WaterBoost Sentry WB-K15 |
| Type | CAT 5 kiosk booster, single pump |
| Pump | WaterBoost WB-Compact 3.0, variable speed inverter |
| Maximum pressure | 3.0 bar |
| Maximum flow | 12 l/min |
| Noise | 40 dB(A), measured |
| Connectivity | Built-in WiFi, DConnect app, Google Home and Amazon Alexa |
| Pump approval | WB-Compact 3.0 is WRAS compliant |
| Tank | 15 litre polyethylene |
| Air gap | Type AB (Fluid Category 5) |
| Enclosure | IP54 GRP, full opening hinged lockable door |
| Inlet | ½″ BSP |
| Outlet | ½″ BSP |
| Overflow | ¾″ |
| Electrical entry | 20 mm |
| Mounting | Wall or floor, internal or external |
| Frost heater | Optional, 230 V AC |
| Dimensions | L 320 × W 528 × H 872 mm |
Installation checklist
Frequently asked questions
What is a CAT 5 AB air gap?
A type AB air gap gives Fluid Category 5 backflow protection, for applications that need increased protection such as food washing and packing stations, abattoirs, hygienic rooms, surgeries and laboratories.
What pressure and flow does the Sentry WB-K15 give?
Up to 3.0 bar at up to 12 l/min.
How quiet is it?
The WB-Compact 3.0 runs at a measured 40 dB(A).
Can I control it from my phone?
Yes. Built-in WiFi connects the pump to the DConnect app for remote monitoring and control, and it supports Google Home and Amazon Alexa voice commands.
Can I install it outside?
Yes. You can mount it on a wall or floor, internally or externally, and the kiosk is IP54 rated.
Is a frost heater available?
Yes, as an option. The frost heater runs on 230 V AC.
-
Data Sheet PDFDownload
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.
Related products
Grundfos JP5 230v male Grundfos JP5 Pumps suits a number of domestic or commercial water supply jobs. Close-coupled centrifugal pumps with built-in ejector system designed…
The Clarke CBM pump. This high efficency multi-stage tankless booster pump has an electronic control unit and combines high output with a massive 48m head.…
DAB single variable speed booster pump sets specifically suitable for domestic applications and small systems for civil, agricultural or industrial uses.
Lowara CEAM 70/5-V/A 110v 107330010DAA Lowara CEA-CA series. A wide range of pumps for domestic and industrial applications. Single impeller CEA and dual impeller CA.…
DAB triple AD variable speed booster pump sets specifically suitable for commerical applications and civil, agricultural or industrial uses.
DAB twin AD variable speed booster pump sets specifically suitable for domestic applications and small systems for civil, agricultural or industrial uses.
Frequently Asked Questions
Quick answers to common questions about the WaterBoost Sentry WB-K15 CAT 5 Kiosk Booster. 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.