AWWA C530-07 Pilot-Operated Control Valves (PDF)

This standard establishes minimum requirements for pilot-operated control valves of globe, angle and wye body styles with various end connections in sizes from 1-1/2 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 psi (2,070 kPa), a maximum steady-state differential pressure of 300 psi (2,070 kPa), and a maximum line velocity of 15 ft/sec (4.6 m/sec). The valves described in this standard are provided in three body types (globe, angle, and wye) with various pilot-operating methods in classes described as follows: Angle body type - Class 125, 150, 250, and 300, ASME flanges, National Pipe Thread (NPT) and grooved joint ends in sizes 1-1/2 to 60 in. (37.5 to 1,500 mm); Globe body type - Class 125, 150, 250, and 300, ASME flanges, NPT and grooved joint ends in sizes 1-1/2 to 60 in. (37.5 to 1,500 mm); Wye body type - Class 125, 150, 250, and 300; ASME flanges, NPT and grooved joint ends in sizes 1-1/2 to 60 in. (37.5 to 1,500 mm).