Bath Trap question
- Thread starter Sonic70
- Start date
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Minimum 50mm depth of seal, can reduce to 38mm if discharging to a gulley or hopper.
I've got 75mm in my head, but double checking the regs and they state 50mm. Odd. 
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A bath gets away with a 50mm trap because as a large flat bottomed vessel, the last bit of water to empty out of it flows quite slowly and there is less chance of trap loss due to momentum or self siphonage. This can be reduced to 38mm if not connected to a stack as there is less chance of induced siphonage. Having said that, I bet if you looked at 100 baths discharging into a stack, 75% of them would have a shallow trap fitted.
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