GDQ47H轨道球阀
轨道球阀结构特点
传统的球阀，无论是浮动式还是固定式，球体与阀座始终接触，开关扭矩大，密封面容易损伤，轨道球阀在启闭时，球体先偏转-δ角，然后转动，开关全过程中球体与阀座脱离，故阀座不会被擦伤，并且启闭扭矩小。
轨道球阀主要零件材料
零件名称材料
阀体WCBZG1Cr5Mo18-8CrNi18-12CrNiMo
阀盖WCBZG1Cr5Mo18-8CrNi18-12CrNiMo
阀杆2Cr1338CrMoA11Cr18Ni9Ti1Cr18Ni12Mo2aTi
球体WCB HCr1Cr5Mo18-8CrNi18-12CrNiMo
阀座PTFE/13Cr/CrNiSS SLITE
螺柱B7/35CrMoA1Cr17Ni2
螺母2H/452Cr13
填料PTFE/增强柔性石墨
轨道球阀应用规范
1、设计、制造按GB/12237
2、结构长度按QB/ZMV107
3、连接法兰JB/T79.1～79.4GB/T9113.1～9113.4
4、阀门检查和试验按GB/13927
GDQ47型PN1.6～2.5MPa主要外形尺寸
公称通径DN1520253240506580100125150200250300350400450500600
L1301501601802002302903103504004806007308509801100120012501450
H1220230240260307360410483512543581617672723758791828870940
H24504865255506106406406757107408209059559901050110012701450
H34154555005355806056056206406857358509009201100125013401555
H4370400440460480500550600650713760820875930962102012851625
GDQ47型PN4.0MPa主要外形尺寸
公称通径DN1520253240506580100125180200250300350400450500600
L1301501601802002302903103504004806007308509801100120012501450
H1230240260280320360436492527607649701750750790832875910980
H2486525550610640640675710740820905955990105110012701450
H34555005355806056056206406857358509009201100125013401555
H4400440460480500550600650713777835890950980104013051650
