Torad Engineering LLC’s multi-fluid injection valve is designed to provide capacity unloading and vapor/fluid injection to its spool compressor technology. The multi-function fluid valve allows the spool compressor to meet the feature and functional demands for 25 – 100 hp compressors in both a/c and refrigeration markets. As an unloading device, the compressor capacity can be varied depending on system load.

As an economizer valve, gas from an economizer circuit can be returned to the compressor for improved system efficiency. Unique to the spool compressor, the single valve could provide both functions in the same compressor. The spool compressor features a simple rotary design with four main components: rotor, main housing, vane, and bearing housing.