Dabarun Zaɓin Valve
Dabarun zaɓi na Valve 1, bawul ɗin rajistan (aetv One-way bawul): gabaɗaya ana amfani da shi ga kafofin watsa labarai masu tsafta, ba don ƙunshe da ƙaƙƙarfan barbashi da danko na matsakaici ba. 2, bin ƙananan bawul ɗin bawul don DN50mm (aetv bawul ɗin hanya ɗaya):, yakamata a yi amfani da man shanu ...
duba daki-daki