iron valve item.:Z45X-16F4 applicable: water, gas etc feature: it has a good sealing effed by use of the compensation effect of trace elastic distortion brought byelastic valve.it have many advantages such asswitching easily,good sealingeffect,excellent elasticmemory,long lifespan etc.it can be extensively used in the pipelines f tap water,textile, power supply,vessel, metallurgy, energy source and other fluid pipelines for closing and adjustment.