Protect your water supply from contamination with the Flume Air Gap Bottom Entry Fill Valve. The integrated air gap feature prevents backflow, ensuring that water from the cistern cannot siphon back into the mains supply, which is a key requirement for water regulations.

This valve features a 1/2" connection and is designed for reliable and consistent performance in bottom-entry cisterns. It's the professional choice for ensuring a safe and compliant toilet installation.

• Air gap design – prevents backflow to protect the mains water supply
• Bottom entry – suitable for compatible toilet cisterns
• 1/2" connection – for a standard and secure fit
• Installation height: 328mm
• Water line is adjustable from 177mm to 260mm
• WRAS approved

Delivery (UK mainland only)

 

Next Day: £5, or FREE over £40

- Order by 9pm Mon-Thu: next working day

- Order Fri to 5pm Sun: Monday

- Order after 5pm Sun: Tuesday

 

Pre-12pm: £10

- Same cut-offs as Next Day above

 

Saturday & Sunday: £10, or £5 over £40, or FREE over £75

- Saturday: order by 6pm Fri

- Sunday: order by 4pm Sat

 

Heavy items (over 30kg)

- Mon-Fri only. Order by 6pm and allow up to two working days

- Order after 6pm Thu: arrives after the weekend

 

Supplier items

- Sent directly by the supplier, so timings vary. Lead times appear on the product page in working days (Mon-Fri)

 

More about delivery 

Next Business Day Collection (eligible items)

- Order by 9pm Mon-Thu: collect next day

- Order after 9pm Thu to 5pm Sun: collect Monday

- Heavy items (over 30kg): allow up to two working days

 

Opening hours

- Weekdays vary by branch: open 6:30am-7am, close 6pm-8pm

- Saturday: 7am-6pm

- Sunday: 9am-4pm

 

Check your local store's hours and that it's open before visiting. Please wait for our text or email before collecting.

 

Holding your order
We'll hold it for 14 days, then automatically refund your original payment method.