hat
Dekri anwo a ki gen rapò ak ki pa Peye-retounen valv Fay Komen ak metòd prevansyon, ka sèlman jwe yon eksitan, itilize pratik, pral kontre lòt echèk, yo dwe aktif ak fleksib yo anpeche echèk valv rive, yon sèl nan pi fondamantal se abitye estrikti li yo, materyèl ak operasyon prensip.
eng
Described above with respect to non-return valve Common Faults and prevention methods, can only play a stimulating, practical use, will encounter other failures, to be proactive and flexible to prevent valve failure occurs, the most fundamental one is familiar its structure, materials and operation principle.