Pump Design, Operation and Maintenance Steve Truitt, PE Design - PowerPoint PPT Presentation

Real World Considerations for Pump Design, Operation and Maintenance Steve Truitt, PE

 Design Considerations  Operation  Troubleshooting

 Maintenance and Op Staff involvement in design meetings  Piping design and Pipe Supports  Gauges!  Pressure and vacuum switches for PD pumps  Pulsation dampeners  Suction piping and suction lift applications

 Independently support piping  Install valves on suction and discharge side for maintenance  If using mechanical joint couplings (Victaulic), must be rigid cut  Suction piping as short as possible  Use check valves when multiple pumps discharge to common header

Piping design

Penn Valley Pump Co., Inc.

Penn Valley Pump Co., Inc.

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Poor piping design

 On both suction and discharge sides of pump  Gauges provide diagnostic tools to troubleshoot pumping problems

 Recommended for both suction and discharge sides of all PD pumps  Prevents pump damage due to blocked lines or inadvertent closed valve  Mounts to top of dampeners, clear of process liquid to improve gauge and switch life

• SS316 Body w/ EPDM Sleeve • Adjustable Vacuum/Pressure Switches •4” SS Gauge • Glycercin fill for smooth gauge movement • SS316 Fittings and Ball Valve • Quick release air-fitting for easy dampener re-charging .

 Helpful for all PD pumps  Reduces vibrations and pulsations in piping  Can be used on suction and discharge

 Suction piping as short as possible  NPSH  Cavitation – reduced flow, knocking/gravel, pump damage  Suction lift  Pumps create low pressure  Vacuum tight valves  Straight, vertical pipe runs are best

 Preventative Maintenance  Listen  Touch  Teach

 Tools  Pressure and Vacuum Gauges  Tachometer  Vibration Meter  Amp/Voltage Meter  Infrared Thermometer

 Common causes of pumping issues  The pump  Hydraulic issues  Controls

 Lowest life cycle cost PD sludge pump  Primary, scum, WAS transfer, digester recirculation, thickening/dewatering feed, industrial  100% manufactured in U.S. for over 35 years  Self-priming, Self-valving (No ball check valves)  Pumps run dry indefinitely without damage  No packing/mechanical seals (No seal water!!)  Minimal routine maintenance required (no oil/grease, no traditional seals) .

Thank You. Questions? Steve Truitt, PE