Zeta value optimized flushing box connection with screw connection female thread, made of dezincification-resistant brass (DZR), incl. support sleeves with O-rings and stainless steel press sleeves, "unpressed leaking", acoustic leakage signal during air pressure test
Fits the flushing boxes of the manufacturers Burda (K750/K760), Geberit, Grohe and TECE.