I-KTW (Ukwamkelwa kovavanyo kunye novavanyo lweendawo ezingezizo zesinyithi kushishino lwamanzi okusela aseJamani)

I-KTW (Uvavanyo kunye nokuVunywa kweCandelo leeNsimbi eziNgezizo zeMetallic kwiShishini laManzi okuSela aseJamani) imele isebe elinegunya leSebe lezeMpilo leFederal laseJamani lokukhetha izixhobo zenkqubo yamanzi okusela kunye novavanyo lwempilo. Yilebhu ye-DVGW yaseJamani. I-KTW ligunya elilawulayo elinyanzelekileyo elasekwa ngo-2003.

Ababoneleli kufuneka bathobele uMgaqo we-DVGW (German Gas and Water Association) W 270 “Ukusasazwa kweentsholongwane kwizinto ezingezizo ezesinyithi”. Lo mgangatho ukhusela kakhulu amanzi okusela kwizinto ezingcolisayo zebhayoloji. I-W 270 ikwayindlela eqhelekileyo yokusetyenziswa kwemigaqo yomthetho. Umgangatho wovavanyo lwe-KTW yi-EN681-1, kwaye umgangatho wovavanyo lwe-W270 yi-W270. Zonke iinkqubo zamanzi okusela kunye nezixhobo ezincedisayo ezithunyelwa eYurophu kufuneka zikhutshwe ngesatifikethi se-KTW.