Flap Gate - Seating and Unseating Head
Flap Gate - Seating and Unseating Head
(OP)
I am trying to get a clarification on this two terms (seating head and unseating head) as it relates to the design of a flap gate.
Appreciate your help. Thanks.
Appreciate your help. Thanks.






RE: Flap Gate - Seating and Unseating Head
The unseating head is the pressure head required to lift the weight of the flap and break a seal. Think when you have a flap valve on a very shallow pipe. If the depth of water required to open the valve is too high then the line may back up and cause problems upstrema.