automated butterfly valves automated butterfly valves
automated butterfly valves
Figure Number Abbreviation

- AT-RLW Concentric Rubber Lined Butterfly Valves - WAFER Type
- AT-RLS Concentric Rubber Lined Butterfly Valves - SEMI-LUG Type
- AT-RLL Concentric Rubber Lined Butterfly Valves - LUG Type
- AT-RLF Concentric Rubber Lined Butterfly Valves - FLANGE Type

Standard Compliance
Cephas Valve Rubber Lined Butterfly valves conform to ISO 5752, MSS SP67, JIS B 2032, JIS B 2064, API 609, BS5155, in general.
Production Range
SIZE Working Pressure Working Temperature
DN 50 to DN 4000 (2 inch ~ 160 inch) Up to 16bar -20 ~ +160

Automated butterfly valves is a quarter-turn valve used to regulate flow. 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.

Automated butterfly valves are similar to ball valves but have several advantages. They are small and, when actuated pneumatically, open and close very quickly. The disc is lighter than a ball, and the valve requires less structural support than a ball valve of comparable diameter. Automated butterfly valves are very precise, which makes them advantageous in industrial applications. They are quite reliable and require very little maintenance.
 
One disadvantage of butterfly valves is that some portion of the disc is always presented to the flow, even when fully opened. The use of a Automated butterfly valves therefore always results in a pressure switch across the valve, regardless of the setting.
 
Automated 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. A single-actuated valve is typically set up to require a signal to open with a failsafe, meaning that when power is lost the valve springs back to a fully closed position. Double-actuated pneumatic valves are not spring loaded and require a signal both to open and to close.