Air vent valve

Do you have an old JIS air vent valve?

There is an old JIS B 2063 air valve for water supply, and it is used for water mains, etc.
Single port (screwed, 15 to 25A) and double port (flange, 75, 100, 150A) are available, and have a rapid exhaust/intake mechanism.
Our air vent valve does not correspond to the old JIS product.

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RD44N－F □

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