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Lift
gates are used to control the cross-sectional area through
which water passes. Use as an emergency valve is facilitated
by a design which enables the gate to operate without energy
input.
A lift gate comprises a sheet metal apron with stiffeners
and a frame. It slides on the rails which support the bearer.
Small
sizes can be delivered as a complete unit, thus facilitating
installation (which can even be carried out by the user). |
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The
lift gate can be operated by a manual jack or by a hydraulic
ram.
The hydraulic ram is controlled manually, semi-automatically
or automatically.
Control modes:
- Opening
and closure require operator intervention.
- Closure
is automatic, while opening requires operator intervention.
- Opening
and closure are automatic (e.g. by level detection).
This mode requires lift gate operation to be motorised.
Gate
types
- WALL
- SURFACE,
conventional or with enhanced sliding
- BOTTOM,
with enhanced sliding
- CARRIAGE,
on wheels
Each
type of gate can be fitted with enhanced sealing based on
the use of special neoprene seals. |