Ngokwesiqhelo, isihluzo seoli yecompressor yomoya sisihluzo esirhabaxa esifakelwe ekungeneni kwepompo yeoyile, ngaloo ndlela sithintela ukungena kokungcola kwipompo. Olu hlobo lwesihluzo lulula ngesakhiwo. Sinokumelana okuphantsi kodwa ukuhamba kweoyile kukhulu. Isihluzo esihamba ngamandla sinamathele kumbhobho wokubuyisela ioyile wenkqubo ye-hydraulic, ukuze kuhluzwe amasuntswana esinyithi, ukungcola kweplastiki, njl. Ukusetyenziswa okuphambili kwesi sihluzo kukugcina ukucoceka kweoyile ebuyisiweyo ngaphakathi kwitanki yeoyile. Isihluzo se-Duplex sinesakhiwo esilula kunye nokusetyenziswa okulula. Ngaphandle kwevalvu ye-bypass, ikwaxhotyiswe ngesixhobo sokulumkisa okanye sokuvimba ungcoliseko, ukuqinisekisa ukhuseleko lwenkqubo.
