UNLIMITED FREE ACCESS TO THE WORLD'S BEST IDEAS

close

AWWA C504

Rubber-Seated Butterfly Valves

inactive
Buy Now
Organization: AWWA
Publication Date: 23 January 2000
Status: inactive
Page Count: 46
scope:

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

Body types, classes, and sizes. Valves described in this standard are provided in four body types and in classes as follows:

Wafer valves. Class 150B, in sizes 3-20 in. (75-500 mm).

Short-body flanged valves. Class 25A, class 25B, class 75A, class 75B, class 150A, class 150B, in sizes 3-72 in. (75-1,800 mm) and class 250B in sizes 3-48 in. (75-1,200 mm).

Long-body flanged valves. Class 75A, class 75B, class 150A, and class 150B, in sizes 3-72 in. (75-1,800 mm).

Mechanical-joint-end valves. Class 150B and class 250B, in sizes 3-24 in. (75-600 mm), and class 25A, class 25B, class 75A, class 75B, class 150A, class 150B, class 250B in sizes 30-48 in. (750-1,200 mm).

Definition of classification. In each case the numeric designation represents the pressure rating (the maximum steady-state fluid working pressure, in pounds per square inch gauge) and also the maximum steady-state differential pressure, in pounds per square inch, for which the valve is designed. The designations "A" and "B" define the flow-rate capabilities with the valve in the fully open position. "A" valves are rated for a maximum velocity of 8 ft/sec (2.4 m/sec), and "B" valves are rated for a maximum velocity of 16 ft/sec (4.9 m/sec) in the piping section upstream of the valve.

Purpose

The purpose of this standard is to provide the minimum requirements for rubber-seated butterfly valves, suitable for freshwater service.

Application

This standard can be referenced in specifications for rubber-seated

Document History

June 7, 2015
Rubber-Seated Butterfly Valves
This standard establishes minimum requirements for 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...
June 20, 2010
Rubber-Seated Butterfly Valves, 3 In. (75 mm) Through 72 In. (1,800 mm)
This standard establishes minimum requirements for rubber-seated butterfly valves, 3 in. (75 mm) through 72 in. (1,800 mm) in diameter, with various body and end types, for fresh water having a pH...
July 1, 2006
Rubber-Seated Butterfly Valves
This standard establishes minimum requirements for rubber-seated butterfly valves, 3 in. (75 mm) through 72 in. (1,800 mm) in diameter, with various body and end types, for fresh water having a pH...
AWWA C504
January 23, 2000
Rubber-Seated Butterfly Valves
This standard establishes minimum requirements for rubber-seated butterfly valves, 3 in. (75 mm) through 72 in. (1,800 mm) in diameter, with various body and end types, for fresh water having a pH...
January 1, 1994
Rubber-Seated Butterfly Valves
A description is not available for this item.

References

Advertisement