Floor Drain Overview
Two of the most important pieces of equipment on your 239DFS are the cockpit floor drains as their operation is integral to
your safety on the water. At 1‐1/2” in diameter, they are designed to allow massive quantities of water to leave the cockpit of your boat in a
very short period of time in the event of a swamping or extreme down flooding event. All the drains in your 239DFS operate this way,
however, the floor drains are designed so that water can only flow in one direction; out of your boat. The drain features a unique design
that acts like a check valve thereby preventing backflow of water into the cockpit of your boat.
The design of the drain and its operation is solely dependent on the foam ball and seal ring. Any degradation in the foam will
compromise the balls ability to seal against the seal ring. Therefore, do not apply power washers or any cleaning chemicals directly to the
drain area as this will compromise the foam in the ball. When using chemical cleaners in your boats interior, use a sufficient quantity of
water to dilute the chemical(s) when spraying off so that they do not affect the foam ball when draining out.
The seal ring needs to be kept free of debris so that foam ball will seal flush. The drain features a grate so that debris cannot
flow into the drain. In the event that a sufficient amount of debris collects around the seal, the grate and top of the drain assembly can be
removed. Use a spanner wrench to unscrew the top of the drain and clean the drain assembly. This will also provide access to the foam
ball which can than be removed and replaced if necessary. Only do this if it becomes evident that ball is not sealing properly. This will be
manifested by small amounts of water coming through the drain when the boat is sitting at rest in the water.
DO
NOT
remove the drain
while the boat is in the water.
Whenever the thru hulls are
submerged below water, back
pressure seals ball against seal ring,
creating a watertight seal and
prevents backflow of water from the
thru hulls.
Under normal conditions when
the thru hulls are above water,
the ball is below the seal ring
thereby allowing water to flow
out of the cockpit and
overboard
