Linear blowers or diaphragm blowers are a great way for you to get low pressure air. Ideal for aeration, septic tanks, water treatment, aquaculture and fish farming in ponds and small lakes. They can be used with small bubble diffusers to achieve high oxygenation of the water or with course bubble diffusers to disrupt stratified layers of sediment in a body of water. VPNZ can help you by supplying reliable, quiet, high quality blowers from stock. We carry the Airmac DBMX range of diaphragm pumps and we are also agents for the extensive range of blowers and vacuum pumps from Charles Austen.