If the trap of a wash basin, a wash-up sink or a washing machine needs to be replaced, a trap with an anti-syphonage air valve should be purchased.

If the trap of a wash basin, a wash-up sink or a washing machine needs to be replaced, a trap with an anti-syphonage air valve should be purchased.

If the trap of a wash basin, a wash-up sink or a washing machine needs to be replaced, a trap with an anti-syphonage air valve should be purchased.