Centrifugal pumps are amongst the most common pump types used in Australia. The application for centrifugal pumps across Australia varies from the liquid being pumped to temperature, system, pressure and other such factors. The HVAC, civil and mining markets predominantly use centrifugal pumps in Australia. This group of pumps consist of a shaft mounted impeller(s) …
The question often arises in HVAC pump selections- Should my pumps be driven at 4 pole (1450rpm nominal) or 2 pole (2900rpm nominal) speed? Traditionally consulting engineers always specify 4 pole. This has and always will be good practice where the duty allows, but before deciding on this, one should consider several factors listed below: …
Positive Suction Head could be defined as pressure which causes liquid to enter the suction side of a pump. The most common problems encountered in a pumping system are located on the suction side. Each individual pump has an hydraulic requirement at the suction inlet called Nett Positive Suction Head Required (N.P.S.H.R.) Nett Positive Suction …
