How Sluice Valve works - Water Supply 

A gate valve, also known as a sluice valve, is a valve that opens by lifting a barrier out of the path of the fluid. Gate valves require very little space along the pipe axis and hardly restrict the flow of fluid when the gate is fully opened. The gate faces can be parallel but are most commonly wedge-shaped.
Water supply scheme
Detail of valve
water supply valve
Sluice valve
Hdpe pipe
DI pipe
gate valve
RWRM
CWRM
Feeding main
Nominal Pressure
Hydrotesting
HDPE pipe
DI pipe
DI k7 pipe
DI pipe and fittings
Di Pipe fittings