1. Merits and Demerits of Butterfly VALVES A Guide By ASTC

2. About BUTTERFLY VALVES A butterfly valve is a quarter-turn valve used to regulate flow.butterfly valve A metal disc in the body of the valve is positioned perpendicular to the flow in the closed position, and rotated one quarter of a turn to be parallel to the flow in the fully opened position. Intermediate rotations allow regulation of liquid flow. They are often used in agricultural and water or wastewater treatment applications and are one of the most common and well-known valve types.

3. ADVANTAGES OF BUTTERFLY VALVES 1.They are small and, when actuated pneumatically, open and close very quickly. 2. The disc is lighter than a ball, and the valve requires less structural support than a ball valve of comparable diameter. 3. Butterfly valves are very precise, which makes them advantageous in industrial applications. 4.They are quite reliable and require very little maintenance.

4. CHARACTERISTICS OF BUTTERFLY VALVES ★ Quarter-turn rotary valves ★ Typically made from a combination of cast iron, stainless steel and brass. ★ Effective for regulating the flow of most types of gas and liquid at a wide range of temperatures. ★ Relatively inexpensive, long- lasting and dependable. ★ Easily available through a valve distributor.

5. DISADVANTAGES OF BUTTERFLY VALVES Demerit is that some portion of the disc is always presented to the flow, even when fully opened. The use of a butterfly valve therefore always results in a pressure switch across the valve, regardless of the setting.

6. Butterfly valves can be configured to operate manually, electronically or pneumatically. Pneumatic valves operate most rapidly. Electronic valves require a signal to the gearbox to open or close, while pneumatic valves can be either single or double actuated. Our team expertise is considered to be the best butterfly valve suppliers in UAE.butterfly valve suppliers in UAE

7. Design of Butterfly Valves Centric butterfly valve Double eccentric butterfly valve Tripple off-set butterfly valve

8. Contact us ALI SALMAN TRADING COMPANY l.l.c Baniyas Square-14th Road Dubai, UAE. Call :04- 2287694 Email :info@astc-me.com Visit : http://www.astc-me.comhttp://www.astc-me.com