The water pressure regulator prevents water pipes from being due to high pressure, suitable for the plumbing system of RVs, trailers and campers. Lead Free Brass RV Water Pressure Regulating Valve. Each regulator is tested and confirmed to contain less than 0.13% lead, well below NSF's 0.25% lead-free requirement. To provide you with safe and healthy water supply. Designed with 3/4inch garden hose thread and thread, it is compatible with all US water sources for easy use. Adjustable Pressure: Factory preset at 45 PSI, adjustable up to 160 PSI. The water pressure can be easily adjusted to whatever pressure you need by turning a screwdriver. Turn counterclockwise to decrease pressure and clockwise to increase pressure. Pressure adjustment steps: adjust to the desired value, turn on the water flow to confirm, and then turn off the water flow. Then repeat this operation 3-5 times to completely discharge the internal pressure. Versatile, you can see water pressure on the gauge, a must have for RVs, campers and travel trailers. name:Pressure Regulator Valve Colour:Yellow & Black Material:brass+ Stainless steel Package Contents: 1 x Pressure Regulator 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.