... port:1/4" 3.Manual flush 5 Stage Ultra-filtration Water purifier1-Features:the ultra filter membrane is made of fabric ,the ... UF water system;4.Five stage filter: PP , UDF, CTO, Ultra Filter, T33.5.Available water inlet and outlet port:1 ... are optional;10.Customized and OEM orders available. 5 Stage Ultra-filtration Water purifier