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Discharge Pressure Formula:
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Discharge pressure is the pressure measured at the outlet of a pump, representing the force the pump exerts to move fluid through a system. It is a critical parameter in pump performance and system design.
The calculator uses the discharge pressure formula:
Where:
Explanation: This formula converts pump head (in feet) to discharge pressure (in psi) while accounting for the density of the fluid being pumped through the specific gravity factor.
Details: Accurate discharge pressure calculation is essential for proper pump selection, system design, ensuring adequate flow rates, preventing cavitation, and maintaining system efficiency and safety.
Tips: Enter pump head in feet and specific gravity of the fluid. For water, specific gravity is 1.0. All values must be positive numbers greater than zero.
Q1: What is pump head?
A: Pump head is the height to which a pump can raise a liquid, expressed in feet or meters, representing the energy imparted to the fluid by the pump.
Q2: Why is specific gravity important?
A: Specific gravity accounts for the density of the fluid being pumped. Denser fluids require more pressure to achieve the same head as lighter fluids.
Q3: What is the 0.433 conversion factor?
A: This factor converts feet of water column to pounds per square inch (psi). One foot of water column equals 0.433 psi at standard conditions.
Q4: When is this calculation most accurate?
A: This calculation is most accurate for incompressible fluids at standard temperatures and pressures, and when system losses are properly accounted for.
Q5: How does temperature affect the calculation?
A: Temperature affects fluid density, which changes specific gravity. For precise calculations, use SG values at the actual operating temperature.