How to Install a Water Pressure Reducing Valve This Old House

Zoro Select U25121.019.0250 Wood Screw, #10 X 2-1/2 In, Zinc Yellow Steel Flat. APOLLO VALVES 36ELF12501S Water Pressure Reducing Valve, 1 In. Zoro Select U25140.013.0125 Wood Screw, #6 X 1-1/4 In, Zinc Plated Steel Flat.