Pressure maintaining brake valve along with dynamic brake on severe grades is eliminating use of retainers, reduces lading and equipment damage, and is speeding freight train movements over sections of Western Maryland; pressure maintaining operates to make up brake pipe leakage so that brake pipe reduction once made can be held unchanged for considerable time without manipulation of brake valve.
`Flat maintaining' speeds trains
Ry Age
Railway Age ; 142 , n 1
1957
2 pages
Aufsatz (Zeitschrift)
Englisch
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