Features: It made of high-quality plastic materials, durable and can be used for long-time. The water pressure relief regulator can prevent the harm of water-hammer, increase the pressure of the systems, and reduce the leakage fault when the water flows quickly. The valve can greatly increase the water pressure at low water pressure, while maintaining the stability of water at high-water pressure. The voltages can be adjusted by coins without special tools. Turn counterclockwise to decrease pressure. The presets pressure value of the pressure reducing valve within the safe pressure range of 2-2.5KG, which can be used directly. The pressure reducing valve connect to the 3-way ball-valve of the water purifier inlet, or the water purifier inlet pipe installed in series. It can be installed in most water purifiers, faucets and other water equipment. Specifications: Material: Plastic Maximum Range: 1/4inch/3/8inch/1/2inch Note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Pressure Reducing Valve