LOCOMOTIVE ENGINES . 653 suction pipe ; all the various fittings are noted by letters on the engraving Fig . 523 . In the arrangement shown ( Fig . 524 ) the valve boxes of brass are all separate for the suction , discharge , and non - return valves ; but in … Fig . 524 . — Feed Pump with Cast - iron Barrel and Valve Chests of Brass . a , Pump barrel . b , Plunger and eye - piece . c , Suction valve box . d , Delivery valve box . e , Non - return valve box on boiler . some cast iron is adopted for the suction and discharge boxes , and they are cast along…
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