Packing list: includes 1 pressure regulator + 1 pressure gauge + 1 sealing tape + 1 wrench With the pressure gauges, you can monitors the pressure at any time to a smooth running of work Piston structure: the pressure reducing valves has a piston structure with a simple inner structure that is suitable for different environments, good working and long service life : the pressure regulator water is high-strength brass No fear of rust or It will last for many years, even under high pressure and high temperature Achieve consistent water pressure with our DN20 brass pressure regulator Say goodbye to fluctuating pressures and enjoy a smooth water supply Upgrades your plumbing Versatile: This DN20 1 / 2 inch pressure regulator water withstands a pressure of 1.6MPa and can be installed in front of most tap water devices It can be used in many households, buildings and factories, Manufacturer: SHANGYAKEJI