左移 右移
 
air valve

double orifice, flanged ends, ductile iron body GGG50, stainless steel stem and hardware, PN25
epoxy painted with 200 microns.
Copyright：Tieling Valve(Group)Industry Trade Co.,Ltd  Add: No.118 Guangyu Street, Yinzhou District, Tieling, Liaoning, P.R.China  
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