Quartz sleeve wiper holder for a TrojanUVSwift SC ultraviolet reactor, in Noryl. The holder is the carrier that presses the wiper element against the sleeve and sets the contact it wipes with. This is the original Noryl holder, Trojan part 794146. Trojan’s later PTFE holder, part 794917, replaces it and is the current part for a system being rebuilt; the Noryl holder remains available for like-for-like maintenance. Contact us if you are unsure whether this part fits your UV system.