Description
Fluidmaster PRO45B Bottom Entry Fill Valve ½” Brass Tail
Fluidmaster PRO45B is a bottom entry toilet cistern fill valve with a heavy duty ½” brass tail. It is designed to replace a faulty cistern inlet valve or old ballcock style valve, helping refill the toilet cistern quickly, quietly and reliably after flushing.
Fluidmaster PRO45B Trade Overview
The Fluidmaster PRO45B is a professional-grade bottom entry fill valve for plumbers, bathroom fitters and maintenance teams carrying out toilet cistern repairs. It is suitable for many bottom-entry WC cisterns where a durable brass tail connection is preferred over a plastic shank.
The brass shank is designed to reduce cracking, stripping and corrosion risk at the inlet connection. Fluidmaster also states that the special shank helps reduce noise and water hammer, making it a useful replacement valve for domestic and light commercial WC repairs.
The valve is height adjustable from approximately 230mm to 355mm, allowing it to suit a wide range of toilet cistern sizes. It is suitable for high and low pressure systems and has an anti-siphon design to help prevent contamination of the water supply.
Key Features
- Fluidmaster PRO45B bottom entry toilet fill valve
- Heavy duty ½” brass tail / brass shank
- Designed for bottom-entry toilet cisterns
- Height adjustable from approximately 230mm to 355mm
- Ultra quiet refill operation
- Fast refill with reliable shut-off
- Helps reduce water hammer
- Anti-siphon / backflow protection design
- Suitable for high and low pressure systems
- Professional replacement valve for WC cistern repairs
Common Uses
- Toilet cistern fill valve replacement
- Replacing old ballcock style inlet valves
- Bottom-entry WC cistern repairs
- Bathroom maintenance jobs
- Rental property toilet repairs
- Domestic and light commercial WC maintenance
- Trade plumbing repair work
Why Choose the Fluidmaster PRO45B?
The Fluidmaster PRO45B is a useful trade replacement valve because it combines an adjustable body with a strong brass tail connection. This makes it a good option where a more durable bottom-entry inlet connection is needed.
The quiet refill design, fast refill performance and anti-siphon protection make it suitable for a wide range of WC cistern repair jobs.
Installation Notes
Before fitting, isolate the water supply and drain the cistern. Check that the cistern uses a bottom-entry ½” inlet connection and that there is enough internal height for the valve to be adjusted correctly.
Set the valve height to suit the cistern, connect the ½” brass tail securely and adjust the water level as required. After installation, turn the water back on, allow the cistern to fill and check the inlet connection for leaks.
This is a toilet cistern fill valve, not a flush outlet valve. For cable-operated or push button flush repairs, use a suitable Fluidmaster flush valve instead.
Browse more products in our Toilet Cistern Valves & Syphons category, or view the full Waste Traps, Valves & Connectors range.
For manufacturer information, see the Fluidmaster PRO bottom entry fill valve information.
