CVWR对夹式静音止回
H41X节能消声止回阀
DRVZ静音式止回阀
H44X(SFCV)橡胶瓣
HQ41X滑道滚球式止
HQ45X微阻球形止回
DHH44微阻缓闭消声
H76对夹式止回阀
HH47H、H47XF、HDH47
HH46X、HH48X、HH49X消
H41F46衬氟止回阀
H42F46衬氟止回阀
CVKR静音止回阀