XL41、XL81鸭嘴式止回阀

H44H旋启式止回阀H44H

H41H/H41W升降式止回阀H41H

H14W内螺纹旋启式止回阀H14W

H12W内螺纹立式止回阀H12W

H42H立式止回阀H42H

H76X蝶式止回阀H76X

H71H不锈钢对夹式止回阀H71H

H76W、H76H不锈钢蝶式止回阀H76H

HC41X消声止回阀

DRVZDRVZ*止回阀

自保持式电磁阀