A Brief Review Of ProAct Actuator with Integrated Speed Control and Throttle Body (PISC ITB):

The world of mechanics is surrounded by thousands of different valves. Each of them varies in size, shape and function. Some are meant for controlling speed, some are meant for regulating flow and some are meant for opening and shutting the entrance. Every valve is significantly important in its specified task but here we are going to discuss about an essential engine valve called ProAct Actuator with Integrated Speed Control and Throttle Body (PISC ITB).

ProAct ITB

The PISC ITBs are butterfly valves that are bound to serve the engine by regulating the flow of fuel. Butterfly valves are actually disc valves that are designed to control the flow of air, gas or liquid. The butterfly valves are circular in shape and they comprise a circular disc connected with its pivot. The butterfly valves allow fuel to flow by rotating to 90 degrees to the direction of flow and make way for the fuel to pass.

Salient Features Of ProAct Actuator with Integrated Speed Control and Throttle Body (PISC ITB):

The ProAct Actuator with Integrated Speed Control and Throttle Body (PISC ITB) has various important features. Some of them are as follows:

• The ProAct Actuator with Integrated Speed Control and Throttle Body consist an electrical actuator which is responsible for controlling the opening and closing of throttle valve.
• Its electrical actuator requires electrical energy for operating the throttle valve.
• It is available with a wide range of bore sizes like 85, 95, 105, 120 and 135.
• A speed controller is also installed in it for providing optimized and smooth flow of fuel.
• It is particularly manufactured for gaseous engines.
• It controls the speed automatically but if the user wants to have specific speed, it can be obtained by disabling the automatic speed control.
• It can be operated on the temperature between –40 to +85 °C.
• The high temperature flow range is between –40 to +205 °C.
• For storage the temperature range is between –55 to +125 °C.
• Its utmost working pressure (gage) for standard models is about 414 kPa/4.1 bar.
• Its utmost working pressure (absolute) for standard models is 515 kPa/5.2 bar.a.
• Its greatest working pressure (gage) for high-pressure models is around 711 kPa/7.1 bar.
• Its greatest working pressure (absolute) for high-pressure models is about 711 kPa/7.1 bar.
• Its nominal diameter size is 120 mm.

How To Find Out Proper Valve Size Before Purchasing ProAct Actuator with Integrated Speed Control and Throttle Body (PISC ITB):

The Woodward has provided an efficient equation for determining the proper valve size for different engines. Users need to calculate the Flow Coefficient (CV) in order to determine the exact valve size. The flow coefficient can be calculated using the following equation.

CV=

Where the CV = Flow coefficient, Q= Mass flow, T= Upstream gas temperature, Sg= Specific gravity of gas (1.0 for air), P1= Inlet Pressure (psia), P2= Downstream pressure (psia)

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