The present invention provides a fluid transfer fitment for controllably retaining a fluid in a reservoir in a leak-tight manner. This fluid transfer fitment can be used with a variety of fluid delivery mechanisms. The fluid transfer fitment has a cap portion, an engaging segment, a fluid transfer check valve and a vent check valve. The fluid transfer check valve of the fitment is located within the engaging segment of the fitment.The present invention also provides fluid delivery mechanisms, which can be used with a cleaning implement. The fluid delivery mechanisms can be used with a fitment having a cap portion, an engaging segment and a fluid transfer check valve.