Plunger Rod Load =Ap x PSI

FA = d² x .7854

BHP = (GPM x PSI) / (1714 x .90) [.90 based on 90% Mechanical Efficiency]

BPD = GPM x 34.3

BPD = GPR x RPM x 34.3

GPR = Ap x S x Np / 231

GPM = BPD / 34.3

GPM = GPR x RPM

Ap = Area of Plunger ~ in.²

BHP = Brake Horsepower

BPD = Barrels per Day

d = Plunger diameter ~ in.

FA = Flow Area ~ in.²

FV = Fluid Velocity ~ feet per second

GPM = Gallons per Minute

GPR = Gallons per Revolution

Np = Number Of Plungers

PRL = Plunger Rod Load

PSI =Pounds per in.²

RPM = Revolutions per minute

S = Stroke ~ in.

3/4"

7/8"

1"

1 1/4"

1 1/2"

1 3/4"

2"

2 1/4"

2 1/2"

2 3/4

3"

3 1/4"

3 1/2"

3 3/4"

4"

4 1/4"

4 1/2"

4 3/4"

5"

5 1/4"

5 1/2"

5 3/4"

6"

6 1/4"

.750"

.875"

1.000"

1.250"

1.500"

1.7500"

2.000"

2.2500"

2.500"

2.750"

3.000"

3.250"

3.500"

3.750"

4.000"

4.250"

4.500"

4.750"

5.000"

5.250"

5.500"

5.750"

6.000"

6.250"