Domestic vacuum pneumatic valve in the three major problems

with the ongoing urbanization construction, these skyscrapers, in order to reasonable especially the underlying the owner of the security in the use of water, inevitable to extensive use of reduced pressure pneumatic valve, however, some real estate developers in order to save costs, most of the use of the cheap domestic vacuum pneumatic valve, due to the quality closes nevertheless, this caused many problems, small vacuum pneumatic valve, brought great influence to daily life, from over the years, especially in recent years, with the end user's communication, domestic vacuum pneumatic valve mainly exist the following problems:
a: domestic vacuum pneumatic valve to reduce static pressure does not decrease dynamic pressure, as long as this is inline most have heard, as the name implies, is a time when your water pressure pneumatic valve can relief work, not with water before the pneumatic valve pneumatic valve after pressure is consistent, with straight household drinking water, a lot of people choose also put a in the home, but sometimes the owners would be amazed to find himself in the bottom with reduced pressure pneumatic valve until the water dispenser or tube, is because of domestic pressure pneumatic valve static pressure does not decrease, that if someone at home is good, if nobody at estimates will be flooded. Also when you find your home just open the faucet water very urgent when is very big, but water immediately becomes is reduced pressure pneumatic valve is not caused by static pressure reduction. Import vacuum pneumatic valve, there is no such problem, even in the end there is no water can guarantee the outlet pressure as the set value;
2: domestic vacuum pneumatic valve outlet pressure is not stable, along with the fluctuation of inlet pressure fluctuations, believe a lot of people also come across this problem, really good vacuum pneumatic valve, inlet pressure of outlet pressure fluctuations have little impact, and with domestic vacuum pneumatic valve will find home when no one in the middle of the night water pressure is very big, water pressure small peak home during the day, the tap water of large and small, especially in the shower, the shower water hot for a while to cool for a while, not enjoy bath, completely is a nightmare, it's easy to catch a cold in winter, at the same time, the unstable pressure has a great influence on home a lot of water heater. Import vacuum pneumatic valve has good stability, the outlet pressure is not affected by the influence of inlet pressure, can keep water pressure at the exit of a constant value;
3: domestic vacuum pneumatic valve is noisy, there are often property company of people called for pipes under a lot of noise at night but I can't find out the reason, village owner opinion is very big, I usually let him quiet evening to reduced pressure pneumatic valve to hear, nine times out of ten is the problem, some domestic vacuum pneumatic valve pneumatic valve body due to the internal design is unreasonable, when water flows in the pneumatic valve core will produce large noise, in particular, some never exhaust building water supply and drainage engineering, lack of water from the reduced pressure pneumatic valve pneumatic valve core through the sharp sound, pressure on urban workers and have great influences on the children, older people, seriously affect the sleep quality, it is absolutely can't stand. Import vacuum pneumatic valve higher machining precision, design is more reasonable, general can control in the db below the noise;
in addition, domestic pneumatic valve and relief, such as the use of cast iron material is qualitative easy to rust, resistance is the other problems affecting traffic, in short, the domestic manufacturing industry also has the very big development space, both design and machining precision, look forward to domestic vacuum pneumatic valve quality and performance at an early date to catch up with Italy and Germany and other European countries.