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US 2011/0308967A1 Dec.22,2011 22.Thepump accordingtoclaim21,whereintheneedleis formed of a metal more resistant to corrosion than the sacri ?cialbody. 23.Thepump accordingtoclaim20,furthercomprisinga pro?lecon?guredtoenhanceturbulence. 24.Thepump accordingtoclaim20,Whereinthesacri?cial body is formed from one or more materials from the group comprisingZinc,aluminum,magnesiumoralloysthereof. 25.Thepump accordingtoclaim20,Whereinthesacri?cial body comprises a sleeve mounted stationarily Within the plungerboresurroundingtheplunger. 26.Thepump accordingtoclaim20,Whereinthesacri?cial body is mounted to a forWard end of the plunger for move ment thereWith. 27.Thepump accordingtoclaim20,Whereinthesacri?cial bodyismountedtothesuctionvalveformovementthereWith. 28.Thepump accordingtoclaim20,Whereinthesacri?cial body ismounted Within the suction valve port upstream from the suction valve. 29.A pump, comprising: ahousing; arotatableimpellermountedWithinthehousing; a sacri?cial body mounted Within the housing for immer sionWithin?uid?oW astheimpellerrotatesduringuse; and the sacri?cial body formed of a material less resistant to corrosionthantheimpellerandthehousing. 30.Thepump accordingtoclaim29,Whereinthesacri?cial bodyismountedtoaninteriorportionofthehousingadjacent aperipheryoftheimpeller. 31.Thepump accordingtoclaim29,Whereinthesacri?cial body is mounted to the impeller for rotation thereWith. 32.An apparatusforretardingdamagetoapump dueto cavitation,comprising: a sacri?cial body adapted to be mounted Within the pump, the sacri?cial body being formed of a material selected to shed electrons When immersed Within a ?oWing ?uid ofthepump; and at least one needle mounted to the sacri?cial body and formed of a material more resistant to corrosion due to the ?oWing ?uid than the sacri?cial body. 33. The apparatus according to claim 32, Wherein the sac ri?cial body comprises a sleeve having a pro?le formed on an exterior surface to enhance turbulence of ?uid ?oWing over thesleeveinuse,thepro?leadaptedtobeupstreamoftheat least one needle. 34. The apparatus according to claim 32, Wherein the sac ri?cialbodycomprisesadiskhavingacircularperipheryand adapted to be mounted to an inner end of a plunger of the pump, Wherein the at least one needle is mounted to a face of the disk in alignment With an axis of the disk. 35. The apparatus according to claim 34, Wherein the at leastoneneedleisrecessedWithinacavityformedintheface ofthediskanda?oW portextendsthroughaportionofthe disk to a base of the cavity for directing ?uid to the needle. 36. The apparatus according to claim 32, Wherein the sac ri?cial body comprises a ring adapted to be mounted to a doWnstreamfaceofansuctionvalveofthepump, Whereinthe at least one needle is mounted to the face of the ring in alignment With an axis of the ring. 37. The apparatus according to claim 36, further compris inga?oW portleadingfromonesideoftheringtothefaceof the ring adjacent the at least one needle and the ?oW port beingoutboardofaninnerdiameterofthering. 38. The apparatus according to claim 32, further compris ing a support rod upon Which the sacri?cial body ismounted and the support rod is adapted to be mounted to an interior portionofthepump. 39. The apparatus according to claim 32, Wherein the sac ri?cial body is formed from of a material from the group consistingofZinc,aluminum,magnesiumoralloysthereof. 40. The pump according to claim 23, Wherein the pro?le being located on an upstream portion of the sacri?cial body. *****PDF Image | PUMP CAVITATION DEVICE
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