KNF LIQUIPORT chemically-resistant diaphragm liquid pumps. 8 Product Results. | Match Criteria: Description, Product Name. Z671916. AC/DC input 115 V AC, PTFE (head), flow rate 0.2-1.3 L/min. pricing. SDS. Z671894. AC/DC input 115 V AC, polypropylene (head), flow rate 0.2-1.3 L/min.