Njirimara nhazi ngwaahịa A valvụ nlele bụ valvụ "akpaka" nke meghere maka mgbada ala ma mechie ya maka nkwụsịtụ. dịgasị iche iche n'ụdị usoro valvụ nlele. Ụdị valvụ ndị a na-ahụkarị bụ swing, lift (plug and ball), nru ububa, nlele, na tilting disc. A na-ejikarị ngwaahịa mmanụ, kemịkalụ, ọgwụ, kemika...
Nchịkọta ngwaahịa JIS bọọlụ valvụ na-anabata nhazi nhazi nkewa, arụmọrụ mkpuchi dị mma, ejedebeghị site na ntụzịaka nke nrụnye, usoro nke usoro ahụ nwere ike bụrụ nke aka ike; Enwere ngwaọrụ mgbochi static n'etiti oghere na okirikiri; imewe; Mkpokọta mkpakọ akpaaka, nguzogide mmiri dị obere; valvụ bọọlụ ọkọlọtọ Japanese n'onwe ya, kọmpat ihe owuwu, akara a pụrụ ịdabere na ya, usoro dị mfe, mmezi dị mma, mkpuchi elu na okirikiri mgbe niile na ...
Nkọwa ngwaahịa Q47 ụdị valvụ bọọlụ edobere ma e jiri ya tụnyere valvụ bọọlụ na-ese n'elu mmiri, ọ na-arụ ọrụ, nrụgide mmiri dị n'ihu oghere nke ihe niile na-agafe na ike na-ebu ya, agaghị eme ka oghere gaa n'oche ịkwaga, yabụ oche agaghị eme ya. na-agba ọsọ nke ukwuu, ya mere, na ofu bọl valvụ torque bụ obere, oche nke obere deformation, ike sealing arụmọrụ, ogologo ndụ ọrụ, ọdabara na elu mgbali, nnukwu diameter.Advanced spring pre - oche mgbakọ na ...