二、Y42X型弹簧活塞式减压阀主要零件材料

零件名称 材料 阀体、上盖、下盖 灰铸铁、铸钢 调节弹簧 硅锰钢 活塞 不锈钢 缸套 不锈钢

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产品简介：减压阀一般分为隔膜阀和活塞阀两大类，本公司生产的减压阀口径在DN500mm以下者采用隔膜型，口径在DN600mm以上者采用活塞型，两者之动作原理类似。减压阀主要控制主阀的固定出口压力，主阀出口压力不因进口压力变化而变化，并不因主阀出口流量的变化而改变其出口压力。广泛适用于工业给水、消防供水及生活用水管网系统。Products Introduction:Pressure reducing valves are usually pided into diaphragm valves and piston valves two categories, the caliber of  the  company’s production bellows DN500 using diaphragm type, and DN600 more in the use of piston type, whichever is the principle of similar moves. Pressure reducing valves mainly control the fixed export pressure of the head valve; the export pressure of the head valve doesn’t be change with the import pressure’s change and the export flow’s change of the head valve. It is widely used in the network system of the water supply、fire water supply and life water supply. 主要零部件材质：Material of Main Parts 序号Sequence Number部件名称Part Name材质Material1阀体Body灰铸铁Cast Iron2轴套Bushing不锈钢Stainless Steel3阀座Seat青铜Bronze5密封SealEPDM6阀板Disc灰铸铁Cast Iron7 垫片FlakeEPDM with Nylon9 螺母Bonnet灰铸铁Cast Iron10 弹簧Spring不锈钢Stainless Steel11转轴Stem不锈钢Stainless Steel               主要性能参数：Main Performance Parameters: 公称压力Nominal Pressure PN（MPa）1.01.62.5法兰连接标准Flange Design StandardGB/T 17241.6-1998GB/T9113.1-2000壳体试验压力Shell Testing Pressure（MPa）1.52.43.75密封试验压力Sealing Testing Pressure（MPa）1.11.762.75最大入口压力Max Pressure of Entrance（MPa）1.01.62.5出口压力可调范围Range Pressure of Exit（MPa）0.09~0.80.10~1.20.15~1.6工作温度Working Temperature0℃~80℃适用介质Suitable Mediums水Water 主要外形尺寸和连接尺寸：Outline Dimensions & Connection Dimensions: 公称通径Nominal DiameterDN (mm)LAA1HH1F201802921363422471162518029213634224711632180292136342247116402403301553952781705024033015539527817065250      350165405298180802853651754303132101003604101955103502751254004552205603653101504554752305854203552005855302556754504602506506233007304705003008007003407604905803508608404158405266504009608804309105707154509709304601030610780500107598049011356658306001230106053012707259207001650113056014608659808001750123061016409751050