XD371X信号蝶阀/消防蝶阀

H71W对夹升降式止回阀

H44X(SFCV)橡胶瓣止回阀

H41X消声止回阀

DRVZ(H42X)式止回阀

HH44X微阻缓闭止回阀

HQ41X 滑道滚球式止回阀

CVKR大口径式止回阀

HH47X蝶式缓冲止回阀

J41H/W/Y国标截止阀

J40W美标截止阀

HH48X/HH49X消声缓闭止回阀