54221Hi, stop your steps Features: Made of plastic material, sturdy and , have a long working time. With this valve, it can increase the water pressure to a large extent when the water is low, and meanwhile keep the water constant when the water pressure is high. RO water system: prevent damage to the water hammer, extend the service life of the system, and reduce the leakage failure when the water flow is too fast. The filter protection design effectively keeps the RO system in good condition. It can be installed in most water purifiers, faucet, and other water devices. Specification: Maximum Pressure: 507PsiMaximum Flow Rate: 40ml/s Flow Restriction Valve: 10-50PsiMaterial: Plastic POMInterface: 1/4", 3/8"Dimensions: 5.5x 6cm/2.17x2.36inchColor: White & Blue Quantity: 1pcNote: 1. Please allow 0-1cm error due to manual measurement. Pls make sure you do not mind before bidding.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Included: 1 x Water Filter Reducing Valve (Without Retail Package)