Ngezinga eliphezulu kakhulu lokuvikela ukugqwala, zonke izindawo zensimbi eziveziwe zingafakwa - ngokuvamile nge-chrome eqinile noma i-chrome plating emnyama. Siphinde futhi sinikeze ngokufakwa kwe-chrome okumnyama nge-fluoroplastic (Teflon, noma uhlobo lwe-PTFE), ehlinzeka ngokuvikeleka okungcono kakhulu kokugqwala.