R518/9型偏心旋转蝶阀按结构可分为双偏心(R518型)和三偏心(R519型)。R519系列三偏心密封蝶阀设计*,适用于石化、电力、冶金、轻工等行业。其特点有:*的挤压密封设计,保证流向改变时阀门仍能密封。阀板与阀座环之间密封时为零摩擦,*避免磨损影响密封效果和使用寿命。适用于一般腐蚀性气体、液体介质的调节和切断用。使用柔性石墨填料和层叠式金属密封阀座,*火灾安全要求。密封时为零摩擦,可延长驱动器的寿命。止推结构设计保证温度变化时阀门运作自如。低维护,阀座及密封环更换简易。
R518/9Series eccentric sealing butterfly valves with advanced design,apply for petrochemical、power、metallurgy、light industry、which has more Standard features include:
Unique press sealing design can keep shutting off whenflow direction was changed.Seal friction between disc and seat is zero,so perfectly deep the sealing effect and life.it is Applied for the adjut and shut off of corrosive gas or liquid.Lower unseating torque.Equip of expanded graphite and metal seat can fully accord with firesafe.Maintenance cost is very lower.