1.Ukunemba okuphezulu kuya ku-0.5%
2.Usayizi omncane kanye nezimpawu ezimbili entanjeni
3.Intengo ethengekayo nezisombululo ezinomnotho
4.I-Anti-clogging kanye ne-hygienic flush type design
I-1.Ifanele ukumbozwa kwamakhemikhali, upende, udaka, i-asphalt, uwoyela ongahluziwe kanye nokunye ukulinganisa nokulawula i-viscous media media.
2.Ifanele ikakhulukazi i-infood yokulinganisa ingcindezi, okokusebenza kwezokwelapha nezinye izinkambu zokuhlanzeka.