Steam valve 5 is opened by steam pressure, but closed by air pressure on top oi pistona#39; 4 when train pipe pressure has ... When the train pipe pressure falls below the limit, spring 10 will iorce thediaphragm to its seat. thus cutting oil the supplyanbsp;...
|Title||:||Science of Railways: The air brake, and portfolio of plates. 1911|
|Author||:||Marshall Monroe Kirkman|