Fluidmaster PRO45B 1/2″ BSP Telescopic Bottom Inlet Float Valve Brass Thread Twin Pack

The Fluidmaster PRO45B is the plumber’s preferred replacement for noisy or unreliable cistern inlet valves. Its compact telescopic design adjusts from 230 mm to 355 mm to suit modern slimline cisterns while delivering ultra-quiet bottom-entry fill with minimal water hammer on both high- and low-pressure systems.

Key Features

• Handy value twin pack – ideal for the van or multiple installs
• Heavy-duty 1/2″ BSP brass shank prevents cracking, corrosion and cross-threading
• Height adjustable 230–355 mm (9–14″)
• Ultra-quiet operation with anti-siphon design
• Fast refill and long-life performance
• Works on high- and low-pressure systems without seal changes

Specifications

• Inlet: 1/2″ BSP brass thread, bottom entry
• Adjustment range: 230–355 mm
• Material: Plastic body with brass shank
• Finish: Black
• Anti-siphon: Yes

Applications

Replacement inlet valve for most domestic WC cisterns. Preferred by professional plumbers for new installs and repairs.

What’s in the box

2 × PRO45B fill valves