HCW

Flapvalves are used in connection to surface, sewer and process water systems.

A flapvalve when placed in front of the culvert/pipe, is a one-way direction seal.
When the head (front) pressure increases the flap will be pressed against its seal, preventing
backflow.

When there is pressure from behind (back pressure) the flap opens and discharge.
Because the weight of HDPE is lighter than water it will float and are therefor fitted with a
counterweight to balance the fiap correctly.
The counterweightbalance is adjustable.

We ensure that our flapvalves require only a small difference in waterlevel to open the flap.

The flapvalve is light in weight, making the flapvalves easy to install, very responsive and also
very reliable. The valves are available in varlous forms, such as the vertically hung flat wall
mounted type, as well as pipe mounted, flange mounted and angled wall mounted (mounted on a
10 or 50 degree backward angle to reduce the effect of waves and ensure a good seal.

HCW produces discharge and pump valves as standard. We also make lager diameters and
specials on request

Do you want to know more or do you have any questions please do not hasitate to contact us.
We are happy to assist you.