Can anyone recommend a decent 50mm air admittance valve?
50mm air admittance valve
- Thread starter Fredstudio
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You don't get much better than McAlpine gear https://www.toolstation.com/mcalpine-vp50-air-admittance-valve/p33988
How is that superior to this which I believe is a polypipe one. Thanks
- Joined
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Just a highly regarded manufacturer but it is all just opinion at the end of the day.
Is it possibly a different design more effective
The poly one just looks like an anti vac adapter
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