[Material]Made of high quality plastic material, solid and , have a long service time. [Feature]With this valve, it can largely increase the water pressure when water is low, and meanwhile keep the water steady when the high water pressure. [RO water system]Prevent the harm of water hammer, increase the of the system and reduce the breakdown of leakage when water flow too fast. [Filter Protection]The filter protection design effectively keep the RO system operation in good condition. [Widely Use]Can be installed in most of the water purifiers, faucet, and other water device. Condition: Maximum Pressure: 507Psi Maximum Flow: 40ml/s Flow-limiting Valve: 29-50Psi Suitable for: 3/8 Pushfit Tube Size(L x H): . 6.5 x 6 cm / 2.56 x 2.36 inch Colour: white + blue Material: plastic Package Contents: 4 x Reducing Valve Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.