Reasons and Benefits of Using Low Pressure Steam in Steam Pressure Reducing Valves

High quality and stable low-pressure saturated steam can more effectively ensure the quality of products produced. Therefore, in the production process, it is often necessary to configure steam pressure reducing valves correctly or wrongly. For steam pressure reducing valves, low-pressure steam is also commonly used. Next, we will also explain the reasons and benefits.

Reasons and benefits of steam decompression (using low-pressure steam):

Sometimes, decompression is also for stabilizing pressure. Nowadays, more and more factories are required to use the steam supplied by thermal power plants. Due to the large number of steam consuming units, our production time may be concentrated in the daytime, and few factories use it during the night. Therefore, the pressure is generally high at night, reaching a peak. At this time, it is necessary to reduce the pressure to meet the factory requirements. Even during the day, the steam pressure of the steam pressure reducing valve drops, but the pressure is also very unstable, so it is also necessary to pass through the pressure reducing valve to stabilize the pressure.

Due to the physical properties of saturated steam, pressure and temperature are one-to-one correspondence. In some manufacturing processes, it is possible to directly control the temperature by manipulating the pressure. Due to the relatively simple pressure control and the ability to provide temperature control. This is common in sterilizers, touch dryers, vulcanizers, and calenders, as the surface temperature of these devices is difficult to measure through temperature sensors. Therefore, pressure control is also the basis for temperature control of heat exchangers.

"The lower the pressure, the lower the temperature of the condensate, and the lower the flash ratio of the condensate behind the drain valve, resulting in a corresponding decrease in the amount of heat lost.".

"The lower the steam pressure of the steam pressure reducing valve, the more suitable it is for equipment use. It can reduce the pressure rating of valves, equipment, pipes, and accessories in the downstream pipeline. The acquisition cost of low-pressure equipment is much lower than that of equipment using high-pressure steam, and its service life is also longer.".

The lower the pressure, the higher the enthalpy value of the steam. The enthalpy value is 1922.64kJ/kg at 1.6MPa, 2030.31kJ/kg at 0.8MPa, and 2133.33kJ/kg at 0.3MPa.

Therefore, using low-pressure steam can reduce the steam load of the boiler and save energy (as illustrated in Annex 1). In order to reduce the size of the boiler, most steam boilers have relatively high design pressures and should not be operated at lower pressures, which can lead to "water entrainment" of steam and a decrease in dryness.

Fushan Valve (Suzhou) Co., Ltd. was first established in, and due to development needs, an independent legal entity was established: Fushan Valve (Jiangsu) Co., Ltd., with two holding factories in Suzhou and Kunshan. The company is committed to manufacturing high-quality Fushan brand valves in the fields of air conditioning water system, process cooling water (PCW system), compressed air (CDA system), pure water system, electric butterfly valve, electric ball valve, and steam pressure reducing valve, It has a large number of loyal customers including CSCEC, CEC, CEC, and the Institute of Physics of the Chinese Academy of Sciences.