Answer: valvate

AnswerCrossword Clue
VALVATEHaving flow controls
valvatehaving valves
valvatea. opening by valves, as certain capsules and anthers b. meeting without overlapping, as the parts of certain buds c. composed of or characterized by such parts
valvateserving as or resembling a valve
valvatefurnished with or opening by a valve or valves