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- 18 Jan 2020
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Hello, my bathroom basin was blocked, I took off the vented trap cleaned it and noticed the plug was leaking. I replaced the plug and also got a new Mc Alpine bottle trap with a vent, the same as the old one. The sink takes forever to drain. The outlet is clear and not blocked. I’ve taken the cap off the vent and the water drains really quickly, then spills over when the tap is switched off. When the cap is put back on the sink drains very slowly again. What can I do to speed up the draining??