e discharge in the middle , and the escape at the other end , with a passage leading - underneath the discharge and escape valves from the top of the suction valve , and a lower return passage from above the escape in connection with the suction pipe or hot well . In some instances suction and… … The valves in this case would be discs turned Fig . 336 . — Valve Box for Büge Pump . on the face , with central holes for working on a , Valve box . b , Suction valve . spindles ; thus the valves are guided by this C , Delivery valve . D , Guard with holding - down spindle . means , necessitating…
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