DIY Doctor UK DIY Forums

I have a dual action toilet which fills at the rate of a tea cup per flush with a loud air vacum rushing noise which goes on for some time.I have adjusted everything in sight but the noise would waken the dead and it lasts for ages.Can anyone please help me?

have you a low pressure system to your toilet, but have a mains pressure adaptor on your toilet inlet valve? this would explain a slow refill after flushing.