铸铁止回阀H44T/W-10/16

微阻缓闭蝶型止回阀HH48/49X-10/16

蝶式缓闭止回阀HH47X-10/16

微阻缓闭止回阀HH44X-10/16

对夹式蝶式止回阀H76/77X-6/10/16

300X缓闭式止回阀

HH44X微阻缓闭止回阀

HH46/48/49H型微阻缓闭蝶式止回阀

HH47/H47XF/HDH47X蝶式缓冲止回阀