進口高溫蒸汽減壓閥，High temperature steam reducing valve，是指用于高溫熱蒸汽或者高溫飽和蒸汽場合，比如蒸汽溫度為200℃，蒸汽溫度250℃，蒸汽溫度300℃，蒸汽溫度400℃，蒸汽溫度450℃的蒸汽管道，能將閥前的蒸汽壓力減到所需要的出口壓力，并將壓力穩定在所需要的壓力值的減壓閥，屬于可調式先導活塞式減壓閥。由主閥和導閥兩部分組成。主閥主要由閥座、閥閥盤、活塞、缸套、彈簧等零件組成。導閥主要由閥座、閥瓣、膜片、彈簧、調節彈簧等零件組成。通過調節調節彈簧壓力設定出口壓力，利用膜片傳感出口壓力變化，通過導閥啟閉驅動活塞調節主閥節流部位過流面積的大小，實現減壓穩壓功能。進口高溫蒸汽減壓閥主要用于高溫蒸汽管路，起到減壓穩壓作用。
Brief introduction of imported high temperature steam pressure reducing valve:
High temperature steam reducing valve imported from German rock "de lock" Valve is used for high temperature hot steam or high temperature saturated steam occasions, such as steam temperature of 200 ℃, steam temperature of 250 ℃, steam temperature of 300 ℃, steam temperature of 400 ℃ and steam temperature of 450 ℃. 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 belongs to the adjustable pilot piston type pressure reducing valve Pressure valve. It consists of main valve and pilot valve. The main valve is mainly composed of valve seat, valve disc, piston, cylinder liner, spring and other parts. The pilot valve is mainly composed of valve seat, disc, diaphragm, spring, adjusting spring and other parts. Through adjusting the spring pressure to set the outlet pressure, the diaphragm is used to sense the change of outlet pressure, and the pilot valve is opened and closed to drive the piston to adjust the size of the main valve throttling area, so as to realize the function of pressure reduction and pressure stabilization. The imported high temperature steam pressure reducing valve is mainly used in high temperature steam pipeline to reduce pressure and stabilize pressure.
Structural features of imported high temperature steam pressure reducing valve:
1. It improves the sensing efficiency and sensitivity of outlet pressure change, and greatly reduces the pressure deviation caused by upstream pressure change and flow rate change.
2. The streamline distribution is improved and the noise is reduced.
3. The structure of the sealing surface is improved and the service life of the sealing surface is prolonged.
4. Intrinsically safe, can be used in hazardous areas (except type E).