Plunger pumps, Rmv series pumps, Warnings – Vortexx RMV Series User Manual
Page 4: North america

First Choice When Quality Matters
NORTH
AMERICA
Plunger Pumps
Operating Instructions and Parts Manual
RMV Series Pumps
manufacturers design.
Do not allow children to operate 
the pump.
Never point the high-pressure 
discharge at a person, any part of 
the body or animals. 
Do not operate gasoline engines in a 
confined area; always have adequate 
ventilation.
Do not exceed the pump 
specifications in speed or pressure.
Maximum water temperature is 
140°F. 
Formulas
Nozzles:
Impact Force (lbs.) = .0526 x GPM x √PSI
Nozzle # = GPM x 4000
 √ PSI
GPM= Nozzle # x PSI 
 √4000
PSI = (GPM/Nozzle #)
2
x 4000
Horse Power:
GPM x PSI = Hydraulic HP
 1714
GPM x PSI = EBHP
 1457
EBHP x 1457 = GPM
 PSI
EBHP x 1457 = PSI
 GPM
HP loss due to altitude = 3% per 1000 FT 
above sea level
Pump Speed and Flow:
Rated GPM = Desired GPM
Rated RPM Desired RPM
Motor Pulley Ø = Pump Pulley Ø
 Pump RPM 
Motor RPM
Conversions
Gallons x 3.785412 = Liters
Gallons x 128 = Oz.
PSI x .06896 = Bar
Bar x 14.5038 = PSI
1 inches = 25.4 millimeters
Liters x .2642 = Gallons (US)
Ft. Lbs. x 1.356 = Newton Meters
Inch Lbs. x .11298 = Newton Meters
Newton Meters x .737562 = Ft. Lbs. (force)
Newton Meters x 8.85 = In. Lbs. (force)
Temperature = 1.8(C° + 17.78) = F°,.555(F° 
- 32) = C°
1 U.S. Gallon of freshwater = 8.33 lbs.
1 PSI = 2.31 feet of water
1 PSI = 2.04 inches of mercury
1 Foot of water = .433 PSI
1 Foot of water = .885 inches of mercury
1 Meter of water = 3.28 feet of water
Kilograms x 2.2 = Lbs.
General Safety Information
WARNINGS
Gasoline Drive Pumps
The pump is designed to pump non-
flammable or non-explosive fluids. 
These pumps are intended to pump 
clean filtered water only.
Do not operate in or around an 
explosive environment. 
Always wear safety glasses 
or goggles and appropriate 
clothing.
Do not alter the pump from the
