Description

The ProAct™ Integrated Throttle Bodies (ProAct ITBs) are butterfly valves

electrically actuated by ProAct actuators to control flow output. With bore sizes

ranging from 85 mm to 180 mm, these ProAct ITBs are designed for use with

engines in the 1 MW to 2 MW range. This is an electromagnetic actuator with

75 degrees of travel, which alleviates the problems associated with linkages on gas

engines (such as setup, non-linearity, and wear).

This direct combination of throttle and actuator results in excellent stability and

transient characteristics, and requires no hydraulics, pneumatics, or governor gear

train. Therefore, you end up with an efficient, long lasting, and easily-installed throttle option.

Using the graph and table below, select the closest valve that has a Cv equal to or greater than the

calculated maximum flow value at approximately 80 % opening (60 degrees) to ensure reasonable flow

margin. Also, check that the particular valve’s minimum Cv listed below is less than the minimum

calculated Cv for good low idle performance.

For further assistance, consult the Woodward engineering department.