H44J衬胶旋启式止回阀

H40J浮球式衬胶止回阀

H41J衬胶止回阀

H44F46衬氟止回阀

H44H/Y-16C旋启式止回阀

H41H/Y升降式止回阀

H42Y-320C高压立式升降止回阀

H72Y-160/320C对夹高压立式止回阀

H42H立式止回阀

H14W-16P内螺纹止回阀

H71W/Y对夹升降式止回阀

H76X/H/Y-16C对夹蝶型止回阀