Shaandhaynta taxanaha ahi waxay leeyihiin waalka jeegga gacanta. Inta lagu jiro dayactirka, waalka jeegga waa in la xiraa si loo joojiyo saliidda ka soo baxaysa haanta. Shaandhayntu waa inay ka hooseysaa heerka saliidda marka la rakibayo. Haddii valve -ka jeeggu uusan si buuxda u furin, fadlan ha bilaabin inuu shaqeeyo bamka, si aysan taasi u keenin shil.
Tusaha faakuumka ee shaandhada ayaa calaamadayn doona marka cadaadiska hoos u dhaca curiyuhu gaaro 0.018MPa taas oo muujinaysa in shaandhaynta la nadiifiyo.