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n4google.
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Subject Item
isa:370263796
rdf:type
prov:Entity
prov:value
xternally the totality of said bosses, a butterfly valve disc, two shafts supporting said butterfly valve disc and rotatably mounted in said passages, and means for pivoting and sealing said shafts in said passages, said body including at one of the extremities thereof an end portion permitting connection of the valve to a pipe by interfitting therewith.
prov:wasQuotedFrom
n4:com
Subject Item
isap:151951538
prov:wasDerivedFrom
isa:370263796