:七臺河活塞環(huán)哪里好
HM813849/10 HM813810 HM813849 HM218248/10 HM218248 HM218210 31314 31308 30312 30214 A4138D A4059 94800/98789D 9380 90016 64700D 71451D 71450 39580 39520 30208M 30205XL 31308 6580 6535 6580/35 3877 3820 3877/20 HP16010 ER-12 ER12 JP16049 417520 28523/28520-20024 46790/46720 JM207PP-PR JM207PPPRJM714249 JM714210 SMN114K SN107K GN211KRRB+P座 GN111KRRB+T18802 170RU51R3 YAS-40 DODGE軸承 P4B-S2-115R (070361) DODGE軸承 P4B-S2-200R (070362) DODGE軸承 P4B-S2-203R (070363) DODGE軸承 P4B-S2-207R (070365) DODGE軸承 P4B-S2-211R (070367) DODGE軸承 P4B-S2-215R (070368) DODGE軸承 P4B-S2-300R (070369) DODGE軸承 P4B-S2-307R (070371) DODGE軸承 P4B-S2-315R (070373) DODGE軸承 P4B-S2-407R (070375) DODGE軸承 P4B-S2-415R (070377) DODGE軸承 P4B-S2-115RE (070379) DODGE軸承 P4B-S2-200RE (070380) DODGE軸承 P4B-S2-203RE (070381) DODGE軸承 P4B-S2-207RE (070383) DODGE軸承 P4B-S2-211RE (070385) DODGE軸承 P4B-S2-215RE (070386) DODGE軸承 P4B-S2-300RE (070387) DODGE軸承 P4B-S2-307RE (070389) DODGE軸承 P4B-S2-315RE (070391) DODGE軸承 P4B-S2-407RE(070393) DODGE軸承 P4B-S2-415RE (070395) DODGE軸承 P4B-S2-115L (070397) DODGE軸承 P4B-S2-200L (070398) DODGE軸承 P4B-S2-203L (070399) DODGE軸承 P4B-S2-207L (070401) DODGE軸承 P4B-S2-211L (070403) DODGE軸承 P4B-S2-215L (070404) DODGE軸承 P4B-S2-300L (070405) DODGE軸承 P4B-S2-307L (070407) DODGE軸承 P4B-S2-315L (070409) DODGE軸承 P4B-S2-407L (070411) DODGE軸承 P4B-S2-415L (070413) DODGE軸承 P4B-S2-115LE (070415) DODGE軸承 P4B-S2-200LE (070416) DODGE軸承 P4B-S2-203LE (070417) DODGE軸承 P4B-S2-207LE (070419) DODGE軸承 P4B-S2-211LE (070421) DODGE軸承 P4B-S2-215LE (070422) DODGE軸承 P4B-S2-300LE (070423) DODGE軸承 P4B-S2-307LE (070425) DODGE軸承 P4B-S2-315LE (070427) DODGE軸承 P4B-S2-407LE(070429) DODGE軸承 P4B-S2-415LE (070431)
DODGE軸承 EP4B-S2-207R (070433) DODGE
軸承EP4B-S2-211R (070434) DODGE軸承 EP4B-S2-215R(070435) DODGE軸承 EP4B-S2-300R (070436) DODGE軸承 EP4B-S2-307R (070437) DODGE軸承
EP4B-S2-315R (070438)
:七臺河活塞環(huán)哪里好一般水泵的銘牌上都提到允許吸上真空高度或必需汽蝕余量NPSHr，就是根據(jù)水泵在額定轉(zhuǎn)速和流量下而又不產(chǎn)生汽蝕為原則，由制造廠試驗所確定的吸水高度，為了不發(fā)生汽蝕而限制了水泵葉輪進口處的壓力不能低于某一數(shù)值。也就是說，水泵葉輪進口處的真空度不能高于某一數(shù)值。通常又把水泵葉輪進口處允許的壓力，也叫水泵的允許吸上真空度，它與允許吸上真空高度是一回事。蝕的防止措施屏蔽泵的實際安裝高度，必須低于或等于水泵的實際吸水高度。
