Series 263A Small Pressure Regulators are used in small general purpose applications to regulate pressure in piping systems using water and No. 2 fuel oil. It consists of a brass body construction with NPT threaded female inlet and outlet connections, 1/4 in. 3-way low-pressure gauge port, aluminum spring cage, Buna-N stainless steel disc, reinforced Buna-N diaphragm, and tee handle adjustment. Options include Viton trim and slotted adjusting screw. Strainers are recommended. Series 263A has an oversized orifice and is ideal for use on beverage dispensing and paint spraying equipment, ice cube machines, humidifiers, drinking fountains, and other small process applications. Maximum Working Pressure: 300psi (21 bar).