Full Description

This standard covers rubber-seated butterfly valves, 3 in. (75 mm) through 72 in. (1,800 mm) in diameter, with various body and end types, for fresh and reclaimed water having a pH range from 6 to 12 and a temperature range from 33 to 125F (0.6 to 52C). This standard covers rubber-seated butterfly valves suitable for a maximum steady-state fluid working pressure of 250 psig (1,723 kPa, a maximum steady-state differential pressure of 250 psi (1,723 kPa), and a maximum velocity of 16 ft/s (4.9 m/s).

Valves covered by this standard are furnished in four body types and in classes as follows:Wafer valves, Class 150B, in sizes 3 in. 20 in. (75-500 mm)Short-body and long-body flanged valves in classes 25A, 25B, 75A, 75B, 150A, and 150B, in sizes 3 in. 72 in. (75 mm 1,800 mm), and class 250B in sizes 3 in. 48 in. (75 mm 1,200 mm)Mechanical-joint-end valves, classes 150B and 250B, in sizes 3-24 in. (75-600 mm), and classes 25A, 25B, 75A, 75B, 150A, 150B, and 250B in sizes 30 in. 48 in. (750 mm 1,200 mm)Major revisions to htis edition of hte standard affect the following:Actuator stroke timesActuator design and sizing margins

Product Details

Published: 10/01/2015 ISBN(s): 9781625761088 ANSI: ANSI Approved Number of Pages: 52File Size: 1 file , 1 MB