一、进口高压蒸汽减压阀概述

进口高压蒸汽减压阀（威盾VTON），High pressure steam pressure reducing valve，是指用于高压力或者高压差的蒸汽场合，比如阀前压力10Mpa、16Mpa、25Mpa的gay蒸汽管道，能将阀前的蒸汽压力减到所需要的出口压力，并将压力稳定在所需要的压力值的减压阀，属于可调式先导活塞式减压阀。由主阀和导阀两部分组成。主阀主要由阀座、阀阀盘、活塞、缸套、弹簧等零件组成。导阀主要由阀座、阀瓣、膜片、弹簧、调节弹簧等零件组成。通过调节调节弹簧压力设定出口压力，利用膜片传感出口压力变化，通过导阀启闭驱动活塞调节主阀节流部位过流面积的大小，实现减压稳压功能。进口高压蒸汽减压阀主要用于高压蒸汽管路，起到减压稳压作用。

High pressure steam pressure reducing valve (VTON) refers to a pressure reducing valve used in high pressure or high-pressure differential steam situations, such as gay steam pipelines with front pressure of 10Mpa, 16Mpa, and 25Mpa. It can reduce the steam pressure in front of the valve to the required outlet pressure and stabilize the pressure at the required pressure value. It is an adjustable pilot piston type pressure reducing valve. It consists of two parts: the main valve and the pilot valve. The main valve is mainly composed of parts such as valve seat, valve disc, piston, cylinder liner, spring, etc. The pilot valve is mainly composed of parts such as valve seat, valve disc, diaphragm, spring, and regulating spring. By adjusting the spring pressure to set the outlet pressure, using a diaphragm to sense the change in outlet pressure, and driving the piston to adjust the size of the flow area at the throttle position of the main valve through the opening and closing of the pilot valve, the pressure reducing and stabilizing function is achieved. The imported high-pressure steam pressure reducing valve is mainly used in high-pressure steam pipelines, playing a role in reducing pressure and stabilizing pressure.

二、进口高压蒸汽减压阀主要技术参数和性能指标

三、进口高压蒸汽减压阀流量系数(Cv)

四、进口高压蒸汽减压阀主要零件材料