1. Experts in Chem-Feed and Water Treatment Solenoid versus Motor-driven

2. Experts in Chem-Feed and Water Treatment Aspects of Solenoid Pumps  Low flow – up to 20 gph  Low pressures – up to 250 psi  Inexpensive  Simple to use – basic operation to Gala/Delta  Low viscosity ratings (high viscosity available)  Some customers consider these “Throw Away”  Auto de-gassing capabilities  Not rated for API use  Can come in “Explosion-Proof” models  Hard to break

3. Experts in Chem-Feed and Water Treatment Aspects of Motor-driven pumps  Higher flow – up to 10,000 gph and more!  Higher pressures – up to 56,000 psi..no more!  More expensive  Simple to use – Basic Sigma, Meta, Makro  Need to pay attention to hydraulics  No auto de-gassing  ProMus/Orlita in accordance with API-675  Need explosion-proof motors  Control Sigma same as Gala  Higher viscosity rating  Some customers like some “beef” to their pump

4. Experts in Chem-Feed and Water Treatment What pump do you choose?  Find out as much information as you can  Flow rate  Pressure  Chemical  Application  Indoors or outdoors  Suction lift or flooded suction  Viscosity  Specific gravity  Vapor pressure  Control aspects

5. Experts in Chem-Feed and Water Treatment What pump do you choose????  If motor-driven, run piping program  Any plant restrictions (API, no solenoid, explosion-proof, sanitary, no plastic, no aluminum, pump size)  Does customer have a preference??  Customers price range?  ProMinent’s recommendation

6. Experts in Chem-Feed and Water Treatment Linear (solenoid) “Lost Motion” Drive Suction StrokeDischarge Stroke Return Spring Extended Return Spring Compressed Solenoid De- Energized Solenoid Energized Stroke Return Limiter Stroke Length Knob Stroke length adjustment is made by limiting return of suction stroke ProMinent Models: Gamma, Beta,GALA, “D” pumps ProMinent Fluid Controls

7. Experts in Chem-Feed and Water Treatment Rotating (motor) Cam and Follower “Lost Motion” Drive Suction Stroke Discharge Stroke Stroke Return Limiter Stroke Length Knob Extended Return Spring Compressed Return Spring CamFollower Stroke length adjustment is made by limiting return of suction stroke ProMinent Models: Vario, Meta, Sigma, Hydro ProMinent Fluid Controls

8. Experts in Chem-Feed and Water Treatment Rotating (motor) Straight Crank (Amplitude Modulation) Drive Worm GearDrive Gear Eccentric Yoke Stroke Length Knob Suction Stroke Discharge Stroke Stroke length adjustment is made by changing eccentric height, which changes yoke travel distance ProMinent Models: Makro, Alpha ProMinent Fluid Controls