快速接头 |ball valve, gate valve, check valve, butterfly valve
蜗杆齿轮链轮的 epdm 橡胶蝶阀 - buy epdm seat butterfly valve
two shaft wafer butterfly valve it is kind of simple
z 011- a wafer butterfly valve dn 20 – 1200, max. 16 bar
20/ 21 series rubber butterfly valve / wafer 1 – 20″, 150 psi
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