hh44h*hh44x型微阻缓闭止回阀 hh44h16c-dn50
面议hh44h*hh44x型微阻缓闭止回阀 hh44h16c-dn50
面议HH49X HH48X*蝶型缓闭止回阀HH49X HH48X-16Q 80
面议HXH47HHXH47H液压缓闭蝶型止回阀
面议BFDZ701HXBFDZ701HX液力自动阀
面议DXH44HDXH44H斜置密封多功能止回阀
面议BFDG7M41HBFDG7M41H膜片式管力阀
面议BFDG7H41HBFDG7H41H活塞式管力阀
面议H76X H77XH76X H77X对夹式止回阀
面议HS41X-AHS41X-A防污隔断阀{倒流防止阀}
面议H142XH142X 液压水位控制阀
面议HC42XHC42X*止回阀
面议HH49X HH48X蝶型缓闭止回阀
面议