443 MARINE ENGINES . be moved by hand before starting the engines , and in that respect they are not so safe as the spindle valves and other arrangements . The injection valve is simply a sluice , placed in a suitable valve … which is generally arranged — Sluice Injection Valve . Fig . 328 . on the top of the condenser . b , Chest . c , Cover , d , Spiadle . a , Sluice valve . E , Condenser . Gridiron valves are some - times used , which are moved by a spindle attached to the valve with an eye and pin passing through a…
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