articulation check valve
articulation lock check valve
automatic stop and check valve
auxiliary feed check valve
ball check valve
可塑火黏土
球黏土
逆止球阀
球形单向阀
球形止回阀
落球式止回阀
止回球阀
球止回阀
球核对阀
ball check valve spring
blade lift lock check valve
blade sideshift lock check valve