Watts 0335020 Three Way Small Pressure Regulator

Watts 0335020, the Watts 263A 1/2" Three-Way Small Pressure Regulator, is a forged brass inline regulator with female 1/2" NPT inlet and outlet connections. It features a 1/4" three-way low-pressure gauge port, reinforced Buna-N diaphragm, Buna-N stainless steel disc, aluminum spring cage, and a tee-handle for precise downstream pressure adjustment. The oversized orifice supports stable downstream pressure at low flow, making it suitable for general-purpose regulation in water and No. 2 fuel oil piping systems. It is rated for a maximum working pressure of 300 PSI (21 bar) and installs in-line with 1/2" female NPT connections. Common applications include beverage dispensing equipment, paint spraying systems, ice cube machines, humidifiers, drinking fountains, laboratory equipment, small process water systems, fuel oil piping, commercial appliances, and other industrial fluid handling installations where precise regulation and equipment protection are required. The 263A series has been discontinued in favor of the LF263A lead-free series, with common replacements including Watts LF263A 1/2" regulator, Cash Acme EB series, and Bell & Gossett FB-38.