112. Q. What comprises the steam heat equipment on a locomotive?

A. A globe valve throttle at the boiler, a reducing valve, a steam gauge

connected to the steam heat pipe and the proper piping and hose

connections.

113. Q. What pressure is carried in the steam heat pipe, and how is it

controlled?

A. From twenty to sixty pounds in the train pipe, depending on the

length of the train, and is controlled by the regulating valve.

114. Q. What would you do in case the regulating valve failed to

operate?

A. In case the regulating valve would not admit sufficient steam to the

train pipe, would take it apart and block the steam valve open. If the

pressure ran up too high in the steam heat train pipe, would control it

with the steam throttle at the boiler head.

The Traveling Engineers' Association to Improve the Locomotive Engine Service of American Railroads Examination Questions and Answers for Firemen for Promotion and New Men for Employment · 第 170 / 436 题