Edwards FL20K, Foreline TrapCondition: * Used, Removed From Service In Working Condition. Additional Notes: * The FL20K foreline trap has been developed for use in clean pumping systems, to prevent the back-migration of rotary pump oil mist into the system.* The FL20K is most useful with two-stage rotary pumps, operating below 1 mbar.* To maximize sorbent life, install the FL20K near the vacuum system. * In common with other types of sorbent, activated alumina absorbs water. * This does not affect the oil vapor trapping properties but may tend to prolong the roughing time on successive pump downs. * To minimize vapor absorption, we recommend you fit a valved by-pass line.Edwards FL20K