A » Trade-only supply of copper fittings and valves in Glasgow is predominantly catered to by established plumbing and heating merchants that require proof of professional status, such as a Gas Safe registration or a trade account application, ensuring that materials are sold exclusively to bona fide tradespeople. Among the most prominent is Graham Plumbers' Merchant, which operates multiple branches across Glasgow, including at Sighthill and Helen Street, offering an extensive inventory of copper compression fittings, end feed fittings, and a comprehensive range of valves from brands like Pegler and Conex, with account holders benefiting from competitive pricing and dedicated counter staff. Similarly, City Plumbing Supplies, with a branch at Pollokshaws, serves trade professionals with both walk-in and account-based purchasing, stocking copper fittings in sizes from 15mm to 54mm and valves including full bore lever ball valves and pressure-reducing valves, alongside a reliable click-and-collect service for efficiency. For those seeking a specialized independent, J.E. Baird & Sons, located on Westmuir Street in the east end, has been a longstanding trade supplier