CWT Butterfly Valve

When the handwheel or lever is operated, the motion is transmitted through the shaft and opens the butterfly disc.

For a lever-operated butterfly valve, a 90-degree turn opens the valve, with the lever then parallel to the pipe. If the lever is perpendicular to the pipe, the valve is open

• Advantages

• Butterfly valves have many advantages, which is why they are so common in plant piping today.
• The compact design needs less space than other valve types such as globe and gate valves.
• Butterfly valves are generally cheaper than other industrial valves, because the design needs less material. The cheapest type on the market is the wafer butterfly valve, fitted between two flanges.
• Quick, easy opening and closing
• Simpler, easier maintenance
• Light weight.
• Low pressure drop and high pressure recovery.

• Disadvantages:

• Only performs well in low-pressure service. At high pressure the valve is easily damaged and over time becomes prone to leakage.
• Butterfly valves are limited when throttling between 30 and 80 degrees open.

1. CWT butterfly valve types (Butterfly valve CWT)

• By construction
  • Concentric butterfly valve (Concentric Buttefly valve)
  • Eccentric butterfly valve

+ Doubel Offset

+ Triple Offset

1. Butterfly valve features

• Design standard ASME 16.34, API 609
• ASME 16.34, API 609
• Working pressure Class 150 ~ 600
• Size NPS 2” ~ 36”
• End connections Flange, BW, Lug, & Wafer Ends

1. Industrial applications of butterfly valves

Concentric or low-pressure, low-temperature butterfly valves and high-performance butterfly valves cover a wide range of applications. These include:

• Cooling water, air, gas and similar applications, such as fire protection and circulating water
• Corrosive services requiring lined valves
• Food, chemical and pharmaceutical processing
• Slurry and similar services
• Steam and high-pressure, high-temperature applications
• Throttling applications with low differential pressure, such as water supply or cooling air systems

1. Valve coding

To make classifying and ordering valves easier, CWT, drawing on many years of experience, has optimized and assigned codes to its valves and each valve accessory according to CWT’s standard as follows:

CAD is a pioneer and an authorized CWT distributor of CWT valves for industrial systems.

CAD’s staff are trained in depth by the manufacturer’s specialists. We provide technical consulting, repair and maintenance, and replacement of consumables right at your plant.

Please contact CAD’s specialists and sales team via:

Hotline: 0917.414.008

Email: info@cads.vn