scope:

This standard covers gray-iron, ductile-iron, and cast or weld fabricated-steel or stainless steel flanged-end, low-leakage trunnion-mounted, full-port, two(2)- and four(4)-seated rotary cone valves for pressures up to 300 psi (2,100 kPa) in sizes from 6-in. through 60-in. (150-mm through 1,500-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 full-open port fluid velocity (Class D) of 35 ft/sec (10.7 m/sec) 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).

Purpose

The purpose of this standard is to provide the minimum requirements for 6-in. through 60-in. (150-mm through 1,500-mm) rotary cone valves for water, wastewater, and reclaimed water supply service, including material, design, inspection, testing, marking, handling, and packaging for shipment.