RSP Design
RSP Pro · Tool 03

Pump + pressure drop. Any dairy fluid.

Total dynamic head, NPSH available, brake horsepower and the system curve for any dairy product at any temperature from 40°F to 270°F.

1 · Product + flow –
°F
gpm
ft
%
%
%

Fouling adds this % to all friction losses (piping, valves and equipment, not static head) for the end of a production run. Pumps are sized for the end of run. CIP is checked separately in section 6.

2 · Suction side tank → pump –
ft
psig

Level above the pump centerline is positive; use a negative number for suction lift. Tank pressure is 0 for an open or vented tank; use a negative number for vacuum (e.g. evaporator).

Enter counts by line size. If the size changes, list sizes from the tank to the pump; reducers are added automatically.

SizeLengthft90° ell45° ellTee branchTee runpsift/s
Add line size
ValveBrandSizeQtyParallelpsi

Tap a valve above to add it. The newest one goes to the top of the list.

3 · Discharge side pump → destination –
ft
psig

Elevation rise is from the pump centerline to the highest point or the discharge. Destination pressure is what the line must deliver against, such as a pressurized tank or a spray ball supply.

Enter counts by line size. If the size changes, list sizes from the pump to the destination.

SizeLengthft90° ell45° ellTee branchTee runpsift/s
Add line size
ValveBrandSizeQtyParallelpsi

Tap a valve above to add it. The newest one goes to the top of the list.

4 · Equipment pressure drops –

Enter psi at design flow from the supplier's data; it scales with flow on the system curve. Control valves use Cv. Strainers are under Valves + strainers.

5 · Pump curve (optional) Not entered

Enter 3–6 points from the manufacturer's pump curve (flow and head at the impeller size you're considering). The tool finds where it crosses your system curve: the actual operating point.

Curve points · none yet (click to show or edit)
Flow, gpmHead, ft
6 · CIP circuit Off
–
Total dynamic head–ft–
NPSH available–ft
Hydraulic power
–
Brake hp
–
Suggested motor
–
Density
–
Viscosity (in line)
–
Static head
–
Line volume
–
Residence time
–
Losses incl. SF
–

Suction

–

Discharge

–

Recommended pumps
Motor

Need the pump selected and quoted? Our engineers can help.

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Estimates for planning. Fittings use size-specific sanitary K-values from Fristam's published fitting-loss table (45° = half a 90°, tee run K 0.20); manufacturer valve and strainer data are for water and marked est where no published value exists; laminar flow and very thick products raise fitting losses beyond this method. Confirm pump selection against the manufacturer's curves, including viscosity corrections and NPSH required.