Kirkman, Marshall M. (Marshall Monroe), 1842-1921 · New York and Chicago, The World railway publishing company · leaf 55
alf or two turns and thetrouble will be overcome. If the valve regulates well on long trains, or wheremuch steam is used, but allows the pressure to becometoo great on short trains, or where the steam require-ments are small, the piston packing has become hard-ened or worn out and should be… … Fig. 7. Special Automatic Relief Valve. tional safety, the special relief valve shown sectionedin the accompanying cut, Fig. 7. This relief valve is set at 50pounds and is for the purpose ofrelieving the pressure in systemheating pipe and at the same timesignaling the engineer, should thepressure…
Locomotives
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