HH47X/HH48X/HH49X微阻缓闭蝶型消声止回阀
HC41T消声止回阀(铁壳铜芯)
HC41X节能梭式止回阀
HH47X/HH48X/HH..
HH44X微阻缓闭止回阀
DIN德标升降式止回阀
H62H高压对焊止回阀