A textbook on the locomotive and the air brake (1901)
International Correspondence Schools · Scranton, Pa., International textbook co · leaf 380
signal pipe with the signal valve, from which •inch pipe leads to the whistle. Air from the main reservoir can thuspass through the pressure-reducing valve and thence into thesignal pipe and signal valve, but at a reduced pressure. Apressure of 40 pounds is usually m-iintained in the signal I … ^ I J 6 —0 1 THE NEW YORK AIR BRAKE. 18 system, and the duty of the reducing valve is to diminish thepressure from 90 pounds (main-reservoir pressure) down tothe required pressure for use in the signal S3stem. Formerly the pressure-reducing valve wasfrequently screwed directly into the top or endof…
Locomotives · Locomotive boilers · Railroad cars
Internet Archive · Northeastern University Library · Public Domain Mark 1.0. Free to use for anything.
