Mobile nut: with mobile seal, the nut can be turned, the installation only needs to put the seal, it is not easy to flee water, more practical Thicken valve body with a thickened interface: main body molding, advanced forging technology, particularly thickened interface thickness, at first glance, safe, antideflagrant and resistant to pressure Pressure value display: a pressure gauge can be installed to view the water pressure change in real time. The filter sieve is designed to avoid any fouling: the water input is equipped with a stainless steel filter, capable of filtering the impurities present in the water to protect the body from the valve from damage and prolong its lifetime. Domain of application: The place of installation is suitable for an installation in front of equipment requiring decompression, such as electric water heaters, solar energy, water purifiers, taps, water meters, etc. .