PGWH Series
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PGWH Pahūtanga whakapae whakapae kotahi atamira pupa paipa centrifugal
Te whakauru i a maatau mea hou mo te hangarau papu - te PGWH whakapae kowiri tira kotahi te waahanga centrifugal i roto i te raina papu. I whakawhanakehia e to maatau roopu mohio me nga tau o te tohungatanga whakangao, kua hangaia tenei hua ki te huri i o hiahia mo te papu.