Washout valves are used for normal maintenance work of watermain like allowing flowing out of water during cleaning of watermain. At the junction where a tee-branch out to a washout point, a gate valve is installed to separate the two pipelines.

2024年7月30日 · The configuration of washout valves in watermain systems mirrors that of fire hydrants, where two gate valves are installed in conjunction with a single hydrant. Washout valves facilitate routine maintenance by enabling water drainage during cleaning procedures.

The junctions at which a pipe branches out to a washout point usually a gate valve is installed so that the two pipelines are separated. The gate valve installed above usually remains open during normal operation.

2017年1月8日 · The junctions at which a pipe branches out to a washout point usually a gate valve is installed so that the two pipelines are separated. The gate valve installed above usually remains open during normal operation.

Factors for consideration are the number of washouts, head available and limits on discharge, access and resources. The drain down time is dominated by the low head available during the later stages. The washout diameters given below should allow the last 200 m length of a pipeline to be emptied in about one hour in typical situations.

BLOW DOWN VALVE (BDV): A small ball valve that is installed to vent body cavity pressure. BLOWOFF VALVE: A valve installed in a low point or depression on a pipeline to allow drainage of the line. Also called washout valve. BODY: The principle pressure containing shell of …

Drain valves are also known as scour valves or washout valves or blow off valves. They are used to wash out the deposited sediments from the pipeline. Bend: Bend is a fitting used to change the direction of a pipeline. Tee: Tee is a fitting with one inlet and two outlets.

The wash-out is sited at 7 locations, and it is a set of a sluice valve on drain pipe and a gate valve on distribution pipe. The direction and length of the drain pipe is subject to drainage channel/river. The set of valves are designed to be encased in concrete chamber as shown in the Figure 1.2.8.

Air valve chambers perform gas ingress and release to maintain pressure stability and achieve maximum flow performance, while washout chamber assemblies provide an easy access point for maintenance, such as clearing sediment and managing blockages.

2020年9月27日 · Sluice Valve and/or Gate Valve functions strictly to either start or stop the flow. Gate valves are used for water supply system and sluice valves are used for slurries. Mainly two types of spindles (wheel to turn valve on and off, at top …