As gas passes through a compressor there are power, speed, process and surge limitations.
Flow instability takes place when the compressor cannot produce enough pressure head to overcome the downstream resistance. When the downstream demand decreases, flow rates can fall below the point of stable operation. Reversal of flow will occur if the downstream pressure becomes greater than the discharge compressor pressure. This fast, high energy action will be accompanied by a large breakdown of flow patterns within the compressor, vibration, noise, and significant costly damage.
Spartan Control’s anti-surge valves are designed to protect the compressor and provide the needed responsiveness for start-up and shutdown control while maintaining quick response to small signal changes and positive position feedback.