H42立式止回阀H42立式止回阀-

微阻球形止回阀HQ44 微阻止回阀球形止回阀-

微阻缓闭消声止回阀DHH44微阻缓闭消声止回阀-

H44T旋启式止回阀H44T旋启式止回阀-

H44美标旋启式止回阀H44美标旋启式止回阀--

H41国标升降式止回阀H41国标升降式止回阀-

对夹式*止回阀CVWR型 对夹式止回阀*止回阀-

微阻缓闭蝶式止回阀微阻缓闭止回阀蝶式缓闭止回阀-

徽阻缓闭止回阀HH44Z/X、HH44-l6徽阻缓闭止回阀-上海

微阻缓闭蝶式止回阀HH49型微阻缓闭蝶式止回阀-