RK1-NR3XL Pressure Reducing Valve Repair Kit RK1-NR3XL is compatible with 1" Models NR3XL/NR3 pressure control valve. This water regulator valve repair kit comes with cartridge, spring, spring disc, friction ring, union gasket, and lubricant. It has a sprin... Read More UPC: 612052074528 Complete pressure reducing valve repair kit Fits 1" Models NR3XL/NR3 Includes cartridge, spring, spring disc, friction ring, union gasket, and lubricant Spring range 15-75 psi