描述

　　一、产品概述

　　该阀由阀体、阀座、阀芯部件等组成，是一种无需外来能源而只依靠被控介质自身的压力变化进行自动调节压力的节能型产品，可用于非腐蚀性的液体、气体和蒸气等介质的压力控制装置。广泛用于石油、化工、冶金、轻工等工业部门及城市供热．供暖系统。

The valve is made up of body, valve seat, and valve core ect，which can adjust pressure automatically.And the valve can save the energy because it does not need extra energy just by the mutation pressure of controlled medium itself. It is applicable to pressure control devices medium of which are non-erosive liquid, gas，and vapour.

The valve is applied to heating system in city and the field of petroleum, chemistry, metal lurgy，light industrial.

　　二、主要技术参数

　　三、主要零部件材料