一、进口气体减压阀产品概述

进口气体减压阀，（Gas pressure reducing valve）是指用于气体系统管道，比如空气、氮气、氧气、氢气、氦气、氩气、液化气、天然气等气体，通过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。从流体力学的观点看，减压阀是一个局部阻力可以变化的节流元件，即通过改变节流面积，使流速及流体的动能改变，造成不同的压力损失，从而达到减压的目的。然后依靠控制与调节系统的调节，使阀后压力的波动与弹簧力相平衡，使阀后压力在一定的误差范围内保持恒定。

Gas pressure reducing valve refers to a gas system pipeline used for gases such as air, nitrogen, oxygen, hydrogen, helium, argon, liquefied gas, natural gas, etc. It sets the outlet pressure by adjusting the spring pressure, uses diaphragm sensing to change the outlet pressure, and drives the piston to adjust the size of the main valve throttling area through the opening and closing of the pilot valve, achieving the function of reducing pressure and stabilizing pressure. From the perspective of fluid mechanics, a pressure reducing valve is a throttling element that can change local resistance. By changing the throttling area, the flow rate and kinetic energy of the fluid are changed, resulting in different pressure losses and achieving the purpose of pressure reduction. Then, relying on the adjustment of the control and adjustment system, the fluctuation of the pressure behind the valve is balanced with the spring force, so that the pressure behind the valve remains constant within a certain error range.

二、进口气体减压阀产品特征

1、广泛用于气体管路，如空气、氮气、氧气、氢气、液化气、天然气等气体。

2、属于先导活塞式减压阀。由主阀和导阀两部分组成。主阀主要由阀座、主阀盘、活塞、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。控制精确。

3、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。进口压力不断变化的情况下，保持出口听压力和温度值在一定的范围内。

三、进口气体减压阀技术参数及性能

四、进口气体减压阀主要零件材料

五、进口气体减压阀结构图