An tsara biyu-gefe gas baƙi, amfani da biyu gas tushen tsari na babban samar da gas cylinder rukuni da madadin gas cylinder rukuni. A lokacin da matsin lamba rage na babban samar da gas silinda kungiyar ba zai iya samar da gas ba, rufe babban samar da gas silinda kungiyar matsin lamba rage ba zai iya samar da gas ba, rufe babban samar da gas silinda kungiyar bawul, yayin da bude madadin gas silinda kungiyar bawul fara samar da gas. Wannan nau'in jigilar ta hanyar aikin mutum yana samun sauyawa tsakanin manyan tushen samar da iska da tushen samar da iska, tsarin sauyawa yana hana dakatar da samar da yanayi.

Dangane da yawan kwalaben gas da aka haɗa ba daidai ba ne, akwai nau'ikan 3 + 2 da 5 * 3 biyu mafi yawa, takamaiman cikakkun bayanai, maraba da kira don tuntuɓar aikace-aikace.