Hawa Engineers Ltd. Supplies Light Weight and Offset Disk Butterfly Valves. Hawa Engineers Ltd. Is an ISO 9001 certified company. Light Weight and Offset Disk Butterfly Valves is a metal seated valve which is well established in petrochemical and oil industries being lightweight, fire safe and suitable for actuation. Light Weight and Offset Disk Butterfly Valves used in a wide variety of chemical services and available with small dimensions allowing for use in areas where space is limited, and allow a high coefficient of flow. These valves are quick opening valves that consist of a metal circular disc or vane with its pivot axes at right angles to the direction of flow in the pipe, which when rotated on a shaft, seals against seats in the valve body. They are normally used as throttling valves to control flow. Unlike ball valves, butterfly valves do not have any pockets in which fluids may become trapped when the valve is closed.
