This standard establishes minimum requirements for pilot-operated control valves of globe, angle, and wye body styles with various end connections in sizes from 11/2 in. through 60 in. (37.5 mm through 1,500 mm) in diameter, with water having a pH range from 6 to 9 and a temperature range from 40° to 125°F (4.4° to 52°C).

The standard covers piston- and diaphragm-type valves suitable for a maximum steady-state fluid working pressure of 300 psig (2,070 kPa), a maximum steadystate differential pressure of 300 psig (2,070 kPa), and a maximum line velocity of 15 ft/sec (4.6 m/sec).

This standard can be referenced in specifications for pilot-operated control valves, which are described by the scope as defined previously.