Compressors, Gas Turbines and Jet Engines
For slow speed large capacity compressor, following type of valve will be best suited

Poppet valve
Mechanical valve of the Corliss, sleeve, rotary or semi rotary type
Disc or feather type
Any of the above

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Compressors, Gas Turbines and Jet Engines
In the cross compounding of the gas turbine plant

H.P. compressor is connected to H.P. turbine and L.P. compressor to L.P. turbine
Both the arrangements can be employed
H.P. compressor is connected to L.P. turbine and L.P. compressor is connected to H.P. turbine
All are connected in series

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