Click to Purchase and Download this Standard or Test Method
Revision Date:
Updated On: July 26, 2012
Editorial Change:
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 water having a pH range from 6 to 10 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 150 psig (1,034 kPa [gauge]), a maximum steady-state differential pressure of 150 psi (1,034 kPa), and a maximum velocity of 16 ft/s (4.9 m/s). 1.1.1 Body types, classes, and sizes. Valves covered by this standard are furnished in four body types and in classes as follows: 1.1.1.1 Wafer valves. Class 150B, in sizes 3-20 in. (75-500 mm); 1.1.1.2 Short-body flanged valves. All classes, in sizes 3-72 in. (75-1,800 mm). 1.1.1.3 Long-body flanged valves. Class 75A, class 75B, class 150A, and class 150B, in sizes 3-72 in. (75-1,800 mm); and 1.1.1.4 Mechanical-joint-end valves. Class 150B, in sizes 3-24 in. (75-600 mm), and all classes in sizes 30-48 in. (750-1,200 mm). 1.1.2 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/s (2.4 m/s), and "B" valves are rated for a maximum velocity of 16 ft/s (4.9 m/s) in the piping section upstream of the valve.
Global Leader In Thermal Insulating Coatings
Our coatings are uniquely engineered and manufactured in-house to fulfill market-specific needs, enhance energy retention, prevent CUI and protect personnel.
ECS DUST COLLECTORS
Immediate Availability & the Best Rental Rates in town... 3,000 to 50,000 cfm dust collectors. Diesel or electric power sources. Call 800-414-0672 or visit us at www.ecsone.com
High-precision coating thickness gauge MiniTest 7400
MiniTest 7400 with intuitive menu control, enhanced data management with configuration assistent. Wear-resistant sensors for measuring tasks up to 35mm thickness.
No Ordinary Soda
ARMEX® baking soda-based abrasives from the makers of ARM & HAMMER® products offers over 12 formulas specially engineered for your application and your budget.
New Dow Corning® 3055 Resin
Ensure long-term asset protection and extend repaint cycles with a low-VOC, two-coat polysiloxane coating featuring superior corrosion and moisture resistance.
EDCO's Quick Response Codes
EDCO now includes Quick Response Code decals on machines. These QRC's provide customers with instant jobsite advice, problem solving tips and much more. Click to watch EDCO machines in action.
Follow us on Twitter
Join us on Facebook
