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4.9 out of 5 (500+ store reviews)
Perfect fit for my RO system. The size was exactly what I needed, delivery was fast and installation was as easy as push and go.— Mark T., verified buyer store review
Water Block Leak Prevention Device
MPN
£19.99 inc. VAT
In stock
Ready to dispatch
For Under Sink+3Suitable for Under Sink, Hot Drinks Vending, Washing, Water Cooler
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FREE Express Delivery
UK orders over £60
Next Day Delivery
£6.99
Standard Delivery
£3.99 for 2-3 days
*Applies when Next Day Delivery is selected at checkout.
Delivery information
Order before the delivery cut-off for the fastest available dispatch. Delivery options and final prices are confirmed at checkout.
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Our size guide and fitting advice help you choose the right connection first time.
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Learn moreWhat our customers say
The Water Block Leak Prevention device gives you ultimate peace of mind that any leak damage will be limited by shutting off the water if an unusually high volume of water flows through the device.
With 3/4" BSP threads the Water Block can be installed in undersink filter systems, commercial filter systems, dispensers / coolers, washing machines, vending machines and more.
The Water Block is an indispensable device for water fed appliances and can be set to a predetermined setting using the adjustment pointed to prevent the flow of water greater than the set amount.
Specifications
- Approved by: WRAS & TUV
- Connection: 3/4" BSP F x 3/4" BSP
- Flow Rate: Min: 1.5 (+/- 0.5) l/m, Max: 50 l/mMax.
- Max. Working Pressure: 10 bar
- Max. Temperature: 70°C
- MPN
- WBLK
- Brand
- Aqua Prime
- Application
- Under Sink, Hot Drinks Vending Machine, Washing Machine, Water Cooler
- Fitting type
- Flow valve, Leak prevention
- Thread size
- 3/4"
- Thread type
- BSP
- Gender
- Male
- Material
- Acetal
Follow the manufacturer’s installation guidance and check all connections before leaving the installation.
Order before our dispatch cut-off — 3pm Monday to Friday, or 12pm on Saturday — and your order is sent the same day; anything after that follows the next working day. We don’t dispatch on Sundays, and you’ll get a tracking link by email as soon as your order is on its way.
Choose your UK delivery option at checkout:
- Free Express Delivery — free on orders over £60 (2–3 working days).
- Standard Delivery — £3.99 (2–3 working days).
- Next Day Delivery — £6.99, arriving the next working day when you order before the cut-off.
We also ship internationally, with rates calculated at checkout.
Returns & refunds
Changed your mind? You have 30 days to return any unused filter in its original sealed packaging for a refund, or 90 days for exchanges. Start at our returns portal and either generate a prepaid Royal Mail label (£3.49, deducted from your refund) or use your own courier — exchanges are always free to return. We approve refunds within 24 hours of your return reaching us; your bank may then take 3–5 working days to show the funds.
Product Details
The Water Block Leak Prevention device gives you ultimate peace of mind that any leak damage will be limited by shutting off the water if an unusually high volume of water flows through the device.
With 3/4" BSP threads the Water Block can be installed in undersink filter systems, commercial filter systems, dispensers / coolers, washing machines, vending machines and more.
The Water Block is an indispensable device for water fed appliances and can be set to a predetermined setting using the adjustment pointed to prevent the flow of water greater than the set amount.
Specifications
- Approved by: WRAS & TUV
- Connection: 3/4" BSP F x 3/4" BSP
- Flow Rate: Min: 1.5 (+/- 0.5) l/m, Max: 50 l/mMax.
- Max. Working Pressure: 10 bar
- Max. Temperature: 70°C
Specifications
- MPN
- WBLK
- Brand
- Aqua Prime
- Application
- Under Sink, Hot Drinks Vending Machine, Washing Machine, Water Cooler
- Fitting type
- Flow valve, Leak prevention
- Thread size
- 3/4"
- Thread type
- BSP
- Gender
- Male
- Material
- Acetal
Installation
Follow the manufacturer’s installation guidance and check all connections before leaving the installation.
Delivery & Returns
Order before our dispatch cut-off — 3pm Monday to Friday, or 12pm on Saturday — and your order is sent the same day; anything after that follows the next working day. We don’t dispatch on Sundays, and you’ll get a tracking link by email as soon as your order is on its way.
Choose your UK delivery option at checkout:
- Free Express Delivery — free on orders over £60 (2–3 working days).
- Standard Delivery — £3.99 (2–3 working days).
- Next Day Delivery — £6.99, arriving the next working day when you order before the cut-off.
We also ship internationally, with rates calculated at checkout.
Returns & refunds
Changed your mind? You have 30 days to return any unused filter in its original sealed packaging for a refund, or 90 days for exchanges. Start at our returns portal and either generate a prepaid Royal Mail label (£3.49, deducted from your refund) or use your own courier — exchanges are always free to return. We approve refunds within 24 hours of your return reaching us; your bank may then take 3–5 working days to show the funds.