Volume 8 – Mechanical and Electrical Services - Malaysia Geoportal

Chapter 2 GATE DESIGN
b) High pressure slide gate (Sluice gate)
Figure 2.16 Slide Gate
Sluice gates are normally cast iron, vertically sliding valve with bronze seat facings and all sluice
gates have adjustable bronze wedges. These wedges causes the seat facings to be pressed close
together thus ensuring low leakages for sluice under seating and unseating heads. Sluice gates are
normally mounted over an opening in a concrete wall or on the end of a pipe. It has machined back
mounting flange for mounting on cast iron wall thimbles or pipe flanges (See Figure 2.17). Sluice
gates are suitable for both seating and unseating head and can be used for applications up to 60m
seating head and 30m unseating head. Sluice gates have very low allowable leakages as in
accordance to AWWA Specification of 1.25 l/min/m seal perimeter for on-seating head and 2.5
l/min/m seal perimeter for off-seating head.
2-14 March 2009