Two-stage cascade heat pump systems work on standard high-temperature ... an evaporator, and a compressor, with the overall system including a heat exchanger and a heat sink and with all ...
single-stage compressor pump unit offers 13.1 cfm at 100 psi, while the two-stage version provides 17.2 cfm at 175 psi 8-gal. models feature cast iron compressors and puncture-proof tires ...
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