Dual plate check valve H77X nru ububa efere bụ abụọ semicircles, na mmiri na-amanye nrụpụta, akara elu nwere ike ịbụ ahụ stacking ịgbado ọkụ eyi ihe na-eguzogide ọgwụ ma ọ bụ lining roba, a dịgasị iche iche nke ojiji, a pụrụ ịdabere na akara.Eji maka ụlọ ọrụ, nchekwa gburugburu ebe obibi, ọgwụgwọ mmiri, ụlọ elu dị elu ...
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