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Suffolk County Water Authority
Pumps: An Introduction
Presented by: SCWA- Engineering
William G. Fisher, P.E. / Al Smith, P.E.
Suffolk County Water Authority
What is a Pump?
Definition: a pump is any of various machines or mechanical devices that move a liquid or gas into or through, or draw it out of something, as by suction or pressure
Suffolk County Water Authority
Pumps at the Authority Functions: • (Well Pumps)
• Move water from the aquifer to: -Distribution System -Elevated Storage Tank & Standpipes -Reservoir
(Booster Pumps) • Increase flow and/or pressure to a specific area
Suffolk County Water Authority
Facilities Inventory
Pump Stations: 234
Wells: 563
Booster Station: 44
Storage Tanks: 61
Total Storage Capacity: 65.9 Million Gallons
Services/Customers: ~385,000
Population Served: ~1.27 Million
Suffolk County Water Authority
Production Statistics
Average Daily Pumpage: ~180 MGD
Peak Day (July 19, 2008): 480.5 MG
Average Minimum Daily Pumpage: 100 MG
Suffolk County Water Authority
Pump Categories Basic pump categories: 1. Well Pumps -Deep Well Turbine (DWT) -Submersible
2. Booster Pumps -Can -End Suction Centrifugal -Vertical In-Line -Pitless Can
Suffolk County Water Authority
Well Pumps Move water from the aquifer to:
-Distribution System -Elevated Storage Tank & Standpipes -Reservoir
(Flow Ranges from 50 gpm to 2,400 gpm)
Static Water Level
Motor Deep Well Turbine (DWT)
Discharge Pipe Grade
Column
Bowls & Impellers
Suction
Head
Shaft
Shaft
WELL PUMP COMPONENTS
(DWT)
Pump Base
Enclosure
Static Water Level
Motor
Discharge Pipe Grade
Column
Bowls
Suction
Head
Shaft
Shaft
WELL PUMP OPERATION
Pump Base
Pumping Water Level
Motor Deep Well Turbine (DWT) Pump
Discharge Pipe Grade
Column
Bowls
Suction
Head
Shaft
Shaft
Pump Drawdown
Pump Base
Well Casing
Casing Vent
Stilling Tube
Air Release Vent
Static Water Level
Motor
(Submersible)
Discharge Pipe Grade
Column
Bowls & Impellers
Suction
Motor Lead
WELL PUMP COMPONENTS (Sub)
Pump Base
Suffolk County Water Authority
Pump Design • Present / Future Water Demands • Well Constraints • Water Quality • Site Restrictions • Power • Costs
Suffolk County Water Authority
Booster Pumps Increase flow and/or pressure to a specific area- (Flow Ranges from 25 gpm to 2,250 gpm)
-Move water from a lower pressure zone to a higher pressure zone to supplement one major zone from another to supply a small zone at a higher elevation to provide for a dedicated customer to supplement potential fire flow demand
Suffolk County Water Authority
Facilities Inventory (Boosters)
Total Number of Booster Pump Stations: 44
Stand Alone Booster Stations: 15
Total Number of Booster Pumps: 104
Suffolk County Water Authority
Booster Pumps -Can -Horizontal End Suction Centrifugal -Vertical In-Line Centrifugal -Pitless Can
Basic Booster Pump Categories:
Suffolk County Water Authority
-Concrete Vault -Building -Clam Shell -Hot Box
Booster Pump Enclosures:
Motor Booster Can Style
Supply
Grade
Can
Bowls & Impellors
Suction
Head Shaft
BOOSTER PUMP COMPONENTS Photos
Suffolk County Water Authority
Key Concepts • Pumps are an integral part of the infrastructure
•Pumps are used to move water from:
-Aquifer to distribution system
-within or between pressure zones
•There are many pump configurations or alternatives
used at the Authority to effectively and cost
efficiently address the wide range situations
and circumstances found throughout our system