Function: Prevent water pipes from being damaged due to high pressure, suitable for campers, double filter prevents the regulator from being clogged by impurities, thus prolonging its service life, trailer and RV plumbing system. SAFETY: Every regulator is tested to contain less than 0.13% lead, far below NSF's 0.25% lead-free requirement, giving you a safe and reliable water flow. COMPATIBILITY: Designed with a 3/4 inch garden hose thread, the unobstructed inlet ensures a smooth and steady flow of water. It is compatible with all water sources in the United States and is easy to use. The inlet strainer that protects the valve helps filter the water of impurities. ADJUSTABLE: Factory setting: 45 psi, water pressure setting can be adjusted to whatever water pressure you need by turning a screwdriver. Turn clockwise to increase pressure and counterclockwise to decrease pressure. Scale Display: The water pressure can be seen on the scale, which is necessary for caravans, campers, and travel trailers. An RV water pressure regulator is a must-have to protect your RV plumbing system from damaging high pressure water flow. A water regulator installed in your RV can effectively reduce water pressure when water enters from a city water source where there is a pressure differential. Name: Adjustable water pressure regulator Adjusts pressure into the RV from 45 to 55 psi Turn clockwise to increase pressure and counterclockwise to decrease pressure Pressure environment: atmospheric pressure Flow direction: one-way Structure: straight-through Camping water pressure regulator for campers, trailers, and plumbing systems, protects water pipes from high pressure Turn off all RV water supplies before adjusting water pressure To achieve the desired pressure reading, turn clockwise to increase pressure and counterclockwise to decrease pressure Color: Yellow Material: Brass Package Contents: 1 x Water Pressure Regulator With filter gasket 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 to be a little different from the real thing. The measurement allowed error is +/- 1-3 cm.