Re: water standpipes (was Freight Yard Light Poles)


Dennis Storzek
 

I'm not sure that "vacuum breaker" is the proper description of the bell shaped part's function; I always thought it was the counterweight for a relief valve that prevented water hammer when the filling valve was closed. In the case of the Sheffield model in the ad, it has a spring loaded relief valve down in the pit which serves the same purpose.

Dennis Storzek  

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