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30-WS columuum mgbapụta nke akara mmanụ
A na-ejikarị ube 30 na-eme ihe iji mee ka mmanụ mmanụ na-aga n'ihu na-arụ ọrụ ogologo oge. O nwere akụkụ na-akpụ akpụ nke kacha nta, naanị rotor na slide valve (akara kpamkpam na cylinder). Mgbe rootor na-atụgharị, valvụ slide (Ram) na-eme ka ịpụpụ ikuku niile na gas site na valvụ na-agwụ ike. N'otu oge, mgbe ikuku ọhụrụ si na ikuku ikuku na-apụ apụ na oghere ikuku nke slide valvụ, a na-ehiwe oghere oghere ahụ na Valvụ Slide.