View the thread, titled "Filling Loop brand to try thats better quality than off the shelf" which is posted in Central Heating Forum on UK Plumbers Forums.
I've used a decent double check valve, two lever valves and the flex for older customers who struggled with the small valve handles. works well.
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Reply to the thread, titled "Filling Loop brand to try thats better quality than off the shelf" which is posted in Central Heating Forum on Electricians Forums.