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Whether you are replacing an existing regulator or starting a new project, having answers to the following questions will help us provide you with the appropriate regulator.
All regulators have a maximum supply pressure. The spring range selected for output pressures should be based on the desired regulated pressure range. The output pressure setting should be in the middle of that spring range for best results.
Different types of media (other than air) may require special materials for wetted components. ControlAir has many options at its disposal, so be as specific as possible when giving us this information.
Picking a port size for a new project should not be the determining factor, but if you are replacing an existing valve, it is important to know the correct thread size.
It must be determined how much air flow capacity is required by the application. As flow reaches maximum capacity of a regulator, performance characteristics can change. Droop, accuracy and sensitivity can be affected by flow.
In some applications such as force counterbalance, quick and rapid movements of air cylinders might require a large amount of air to be displaced from the cylinder and back through the regulator as exhaust.
Is the regulator being used in a hazardous environment? Is it going to be exposed to corrosive materials ie. Salt water/air, wash down bleach and water?
For applications with small scale pressure changes, that require accurate and repeatable pressure adjustments, a precision regulator maybe required. For large pressure changes, with lower accuracies, a general purpose regulator may be adequate.
As always, a brief description what what you are trying to accomplish will help as well. There maybe special mounting requirements or other governing factors.