Amaswishi okucindezela e-HW18 asetshenziselwa ukulawula ingcindezi yethangi phakathi kwamanani amabili asethwe ngaphambilini kuma-compressor omoya aqhutshwa ngogesi anezigaba ezintathu. Ayatholakala nge-valve yokulayisha, evimbela ama-compressor ukuthi angashisi ngaphansi komthwalo, futhi ayatholakala nge-On-Off knob yokusika i-compressor ngesandla.

Amaswishi okucindezela e-HW19 asetshenziselwa ukulawula ingcindezi yethangi phakathi kwamanani amabili asethiwe kuma-compressor omoya aqhutshwa ngogesi. Atholakala nge-valve yokulayisha, evimbela ama-compressor ukuthi aqale ngaphansi komthwalo futhi atholakala nge-On-Off knob yokunqamula i-compressor ngesandla.

Amaswishi okucindezela e-HW20 asetshenziselwa ukulawula ingcindezi yethangi phakathi kwamanani amabili asethiwe kuma-compressor omoya amancane aqhutshwa ngogesi. Afakwe i-valve yokulayisha, angavimbela ama-compressor ukuthi aqale ngaphansi komthwalo. I-lever yokukhipha ngokuzenzakalelayo ye-compressor yokusika ngesandla. Zombili izinhlobo ze-manifold ze-one kanye ne-four-port ziyatholakala ezinikeza ukufakwa okulula kwama-valve nama-gauge.