head is fitted for the lifting lever to pass through , and 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… … valve seat , and passes Fig . 329 . - - Gridiron Injection Valve . through a hollow plug , the B , Chest . C , Cover . D , Joint for A , Gridiron valve . lifting arm . E , Condenser . bottom part of the cone being tapped for the reception of a screwed brass piece which is brazed on the tapered…
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