Fast and reliable surge prevention for centrifugal and Turbocor® compressor systems
The Danfoss PTS series are stepper motor staging valves designed to prevent surge in oil-free centrifugal chillers and heat pumps. By quickly opening at startup and releasing pressure at shutdown, PTS valves ensure stable operation, protect the compressor from damage and can reduce startup time to within 5 seconds. Acting as a low-pressure bypass, they enable optimal compressor pressure ratios, improve system efficiency, and enhance reliability in critical applications. PTS staging valves are part of the Danfoss EXO - Extended oil-free program and are optimized for Turbocor® TGx and TTx compressors, offering superior performance in demanding conditions.
Features and benefits
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Fast opening and closing within 5 seconds for quick pressure release at startup and shutdown
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Prevents internal gas recirculation and shaft bearing shock during startup and shutdown
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High KV value for greater flow capacity with low pressure drop, enhancing performance without compromising efficiency
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Soft close and tight sealing to avoid sudden shutoff and prevent leakage
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Suitable for all common refrigerants, including A2L
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Durable construction for long-term reliability in oil-free applications