A na-eji ihe ọkụ ọkụ HW18 na-edozi nrụgide tank n'etiti ụkpụrụ abụọ preset na nkeji 3 nke ikuku ikuku na-ebugharị. Ha na-enweta ya na valvụ na-ebupụ, nke na-egbochi compressors ịmalite n'okpuru ibu, ọ dịkwa ya na On-Off knob maka ntuziaka bepụ compressor.

A na-eji ọkụ ọkụ ọkụ HW19 na-achịkwa nrụgide tank n'etiti ụkpụrụ abụọ atọrọ na kọmpụta ikuku na-ebugharị. Ha dị na valvụ nke na-ebupụ ihe, nke na-egbochi compressors ịmalite n'okpuru ibu ma ọ dị ya na On-Off knob maka akwụkwọ ntuziaka bepụ compressor.

A na-eji ọkụ ọkụ HW20 na-achịkwa nrụgide tank n'etiti ụkpụrụ abụọ atọrọ na obere compressors ụgbọala eletrik. Ejiri valvụ na-ebupụ ihe, ha nwere ike igbochi compressors ịmalite n'okpuru ibu. Theauto-off disconnect lever maka ntuziaka bepụ Comressor. A na-enwe ụdị ụdị ọdụ ụgbọ mmiri abụọ na nke anọ nke na-enye nrịgo valves na gauges dị mfe.