Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 170
Wmrm 595. MULTIPJ.E BALL VALVE.—The cone-valve seat is in two parts ; the cover or cage is heldin place by the screw in the cap. … 596. MULTIPLE RING VALVE, forfc enlarged valve area with small lift.
Mechanical movements
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
