Pneumax - Process Automation Page 46
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Process automation technology Catalogue Volume booster Series Flowplus PROCESS AUTOMATION TECHNOLOGY Series Flowplus General The Pneumax Flowplus range of high-capacity volume boosters are available in both Aluminium or Stainless Steel with the option of a standard version or a version with a built in filter (stainless steel). The Flowplus range has been designed to meet the needs of those more demanding applications within the Oil & Gas industry, applications which require high performance in tough environment conditions. With a high flow exhaust ratio, the Pneumax Flowplus volume boosters offer high performance and reliability for process and industrial automation applications.. Both stainless steel and aluminum versions are corrosion and wear resistant, due to the same stainless steel trim type selection, with a wide range of sealing materials for extended operating temperature applications (to extreme low temperature up to high temperature application). The Pneumax booster operates with a 1:1 signal to output relay, capable to provide fast response, delivering high air volume for fast actuator movement and increased stroking speed for both control and on/off valves actuators. As a standard, an adjustable integrated by-pass valve device is available, to reduce or avoid (thru fully closed position in case of on-off application) excessive actuator overshoot or over-damping. In addition, in order to precisely adjust actuator travel speed, the Pneumax booster can be supplied with integral flow regulators, controlling the air supply, exhaust or both. The stainless steel version is also available with a built in filter (5, 20 & 50 µm) with either HDPE or stainless steel filter element. These filter elements can be regenerated by cleaning with a suitable detergent. Operating principle The device is pneumatic operated thru inlet port. When a pressure signal from 2 to 8 bar is applied to the pilot port P, the main valve assembly opens the loading shutter D to allow the passage of a high volumetric flow from the inlet port to the outlet port. When the system detects that the outlet pressure is equal to the pilot signal pressure, and consequently the forces acting on the membranes A and B are equivalent, the main valve moves to the de-energized position, i.e. with the shutters D and E closed. This condition is maintained until there is a change in signal pressure or a change in outlet pressure value. If the outlet pressure figure is higher than the pilot signal pressure, the main valve group opens the shutter of drain E to exhaust. If the system detects an outlet pressure lower than the pilot signal, the main valve opens to restore the outlet at correct pressure. The signal input and output ports are connected by an integrated and adjustable by-pass valve C. The adjustment, in addition to control the sensitivity of the system to changes in the pilot signal, ensures the exact equalization between the input signal and the supply occurs output. This allows that low volume signal provide a output high volume with a signal to output pressure ratio of 1:1. By-pass valve C P Diaphragm A Diaphragm B EXH Exhaust shutter E OUT IN 44 Loading shutter D Overall dimensions and technical information are provided solely for informative purposes and may be modified without notice
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