VeeBath Toilet Inlet Valve Bottom Entry, Inlet Float Valve 1/2 inch

Flomasta Bottom-Entry Fill Valve 1/2" - Screwfix

Premium Universal Toilet Fill Valve – Dual Inlet (Bottom/Side Entry) – Toilet Inlet Valve with 1/2 '' Brass Tail– Leak-Proof Design with Brass Threads & Rubber Seals – Fits 22-30cm Cisterns