Home  > Pavilion

Yokohama Waterworks Commemoration Hall / Branching devices

Yokohama was the first city in Japan in which a modern waterworks system was constructed. The Yokohama Waterworks Commemoration Hall and Waterworks Technology Commemoration Hall displays materials and videos that present how Yokohama's waterworks system was developed. (For more information, see the February 2010 issue of the PR magazine pla-topia.) http://www.city.yokohama.lg.jp/suidou/kyoku/torikumi/suidou-pr/kinenkan/

Water feed system Water meter1 Various tangential-flow-impeller water meters1 Joint and steel pipe Water meter2 Various tangential-flow-impeller water meters2 Branching devices Water meter3 Various tangential-flow-impeller water meters3 Auxiliary stop cock1 Auxiliary stop cock2

Water diversion bands and water diversion saddles are devices used for branching from distributing pipes.
A three-way valve is used to reduce water interruptions in extending water pipes.
A ground cock is a valve used for the first stop cock installed at the point of entry to the house. The new water feed systems now in use do not use ground cocks.

Column
	Types of water meters		Plastic parts making up a tangential-flow-impeller water meter
	Current tangential-flow-impeller type		Auxiliary stop cock