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1、BERMADWaterworksBERMADWaterworksBERMADWaterworks700Series700Series700SeriesModel720Model720Model720TypicalApplicationsTechnicalDataPressureReducingSystemforMunicipalNetworksDimensionsandWeightsFlowChartFlowRate-gpm减压阀SizeA,BCLHWeight1001,00010,000Networkdesignrequir
2、esestablishingvariouspressurezonesduetotopography,distances,demands,energycosts,505005,000mminchmminchmminchmminchmminchkglbsC1.010reservoiravailability,etc.4011/0.992”3501418072058.12399.49.1200.885023501418072108.32449.610.6230.776521/3501418072228.725710.113292”H
3、0.66803”3701523092509.830512.022490.551004”395162751132012.636614.437820.424”4■减少流量,减少漏失1506”430173851541516.349219.475165L1.5"3"6"10"14"18"28"2008”475194601850019.758423.01252760.33■防止气蚀破坏2"4"8"12"16"20"30"25010”520215802360523.872428.52174782.5"32"30012”5452268527
4、72528.584033.13708160.22■减少噪音APressureLoss-barPressureLoss-psi35014”545226852773328.986634.138184040016”645269653899039.0110843.68461865■爆管保护45018”6452696538100039.4112744.49452083B50020”6452696538110043.3116745.996221210.11■节省系统维护时间和成本505005,000DataisforY-pattern,f
5、langed,PN16valves101001,00010,000WeightisforPN16basicvalvesFlowRate-m3/h“C”enablesremovingtheactuatorinoneunit“L”,ISOstandardlengthsavailableDataisforY-pattern,flatdiskvalvesFormoredimensionsandweightstables,refertoEngineeringSectionFormoreflowcharts,refertoEngineer
6、ingSection无论上游压力和下游用水量如何变化,液压动力,隔膜驱动的720型减压控制阀门都能将上游高压减为稳定的下MainValveControlSystemPilotValveSelectionValvePatterns:“Y”(globe)&angleStandardMaterials:PilotPilotType游压力,而且减压后压力保持恒定不变。SizeRange:11/2–32”(40-800mm)Accessories:ValveSizeSetting(bar)#2PB#2#2HCEndConnections
7、(PressureRatings):Bronze,Brass,StainlessSteel&NBR11/2-10”<15Flanged:ISOPN16,PN25Tubing:CopperorStainlessSteel40-250mm>15(ANSIClass150,300)Fittings:ForgedBrassorStainlessSteel6-14”<15Thepumpsupplieswatertothenetworkandtothereservoir.Systempressureistoohighfortheresid
8、entialThreaded:BSPorNPTPilotStandardMaterials:150-350mm>15Others:AvailableonrequestBody:Brass,BronzeorStainlessSteelneighborhood,requiring