止回阀/蝶式缓冲止回

1：HH47X/HH48X/HH49X-16 微阻缓闭蝶式消声止回阀DN50 (358元)
2：HH47X/HH48X/HH49X-16 微阻缓闭蝶式消声止回阀DN250 (1595元)
3：HH47X/HH48X/HH49X-16 微阻缓闭蝶式消声止回阀DN65 (418元)
4：HH47X/HH48X/HH49X-16 微阻缓闭蝶式消声止回阀DN200 (1345元)
5：HH47X/HH48X/HH49X-16 微阻缓闭蝶式消声止回阀DN150 (917元)
6：HH47X/HH48X/HH49X-16 微阻缓闭蝶式消声止回阀DN80 (488元)
7：HH47X/HH48X/HH49X-16 微阻缓闭蝶式消声止回阀DN300 (2190元)
8：对夹蝶式止回阀,对夹蝶式止回阀H76X (200元)
9：蝶式止回阀 (200元)
10：微阻缓闭蝶式止回阀（HH47/48/49/X/H）型 (200元)