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Parts per million
Parts per million (ppm) is used to denote relative proportions in measured quantities; particularly in low-value (high-ratio) proportions.
pH is the measure of the acidity or alkalinity of a solution and ranges from 0-14.
Performance curve
The pump performance curve shows the correlation between media flow (Q) and the pressure differential or head (H) that the pump creates.
Pilot Pump
A smaller pump used as a supplemental pump in booster applications.
Pilot valve
Pilot valves are often used in larger refrigeration plants with many consumers.
Pipe heat loss
Pipes that distribute a heating medium lose some heat to the surroundings.
Pipe insulation
Pipes carrying hot media are insulated to minimise unintentional heat loss.
Pitting corrosion
Pitting corrosion is a localized form of corrosive attacks. Pitting corrosion forms holes or pits on the metal surface.
Plate heat exchanger
A plate heat exchanger is a heat exchanger that is used to transfer heat from one fluid to another.
Power curve
The power curve shows the power consumption of the pump at a given flow.