Ball Valves, 6 In. Through 60 In. (150 mm Through 1,500 mm)
|Publication Date:||20 January 2018|
This standard covers gray-iron, ductile-iron, and cast-steel flanged-end, lowleakage, shaft- or trunnion-mounted, full-port, and double- and single-seated ball valves for pressures up to 150 psi (1,050 kPa) in sizes 6 in. through 60 in. (150 mm through 1,500 mm) diameter and pressures up to 300 psi (2,100 kPa) in sizes from 6 in. through 48 in. (150 mm through 1,200 mm) diameter for use in water, wastewater, and reclaimed water systems having water with a pH greater than 6 and less than 12 and with temperatures greater than 32°F (0°C) and less than 125°F (52°C).
Design fluid velocity. The valve assembly shall be structurally suitable for a port fluid velocity (class D) of 35 ft/s (10.7 m/s) at design pressure and shall be within the allowable stresses noted in Sec. 4.3.1.
Pressure class and rated/design pressure. The classes of valves discussed in this standard shall be designed for the following maximum rated pressure (Table 1). Rated pressure is defined as the design pressure at 100°F (38°C).
The purpose of this standard is to provide the minimum requirements for 6-in. through 60-in. (150-mm through 1,500-mm) ball valves for water, wastewater, and reclaimed water supply service, including material, design, inspection, testing, marking, handling, and packaging for shipment.