Camco Adjustable Lead-Free Brass Water Pressure Regulator helps to protect RV and boat plumbing and hoses from damage caused by high-pressure water. Factory preset to 45psi. Regulator may be set to desired pressure using adjustment screw in cap (settings above 60psi not recommended). Maximum incoming pressure is 125PSI. Protects appliances and plumbing fixtures, and prevents hose failure, helping to prolong equipment life. Constructed of durable Lead Free brass (3/4, 11 1/2 garden hose connections ).