止回阀

H44H、H44Y、H44W、H44T旋启式止回阀

H42Y、H42W、H42H立式止回阀

H41H、H41Y、H41F、H41W升降式止回阀

HH44H、HH44X、HH44Z/T微阻缓闭止回阀

300X（HH741X）型缓闭止回阀

HQ41X、HQ44X、HQ45X无磨损球形止回阀

HC44X（SFCV）、H44X橡胶瓣止回阀

HC41X、H41X消声止回阀

HC42X(DRVZ)、HC42H、HC42T静音止回阀

HH46X/H、HH48X/H、HH49H/X蝶式止回阀

DHH44H/X、HH47H/X微阻缓闭消声止回阀

H74H、H74X、H74W对夹圆片式止回阀

H11H/Y、H14、H61H/Y、H64H/Y锻钢止回阀

H76H、H76W、H76X、H76F对夹双瓣止回阀

H71H、H71Y、H71F、H71W对夹升降止回阀