The El-O-Matic range of actuators and TTV actuated butterfly valves offer a premium branded package for the 20W3040 concentric design. With over 3 million units sold worldwide El-O-Matic has quite quickly established itself amongst the leading global manufacturers. Thier fit and forget principle ensures the total cost of ownership is reduced to a minimum. A hard anodized, high grade aluminium housing make this the choice of many for heavy duty applications. Dual stroke adjustments prevent premature failure and allows for easy on site calibration.