McDonald® No-Lead Pressure Reducing Valves (PRV's) are designed for installation on potable water lines to reduce incoming water pressure in order to protect plumbing system components. Model 72600 PRV's are suitable for water supply pressures up to 300 psi and can be adjusted from 25 - 75 psi (factory set at 50 psi). This model also has a standard bypass feature that permits flow of water back through the valve and into the main when pressure from thermal expansion exceeds the main supply pressure. Model 72600 PRV's are fully serviceable without removing the valve from the line.