COMPONENT GUIDES
See What Each Component Changes
Compare the materials and design choices behind pump cost, performance and service life. Focus on the components that matter for your application.
How to Use These Guides
General Guides, Model-Specific Choices
The guides explain common component designs and materials. They do not mean every option is available on every YARDPUMP model. Check the selected pump before requesting a change.
Component Guide Library
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Choose a part or search for the issue you want to understand. Each guide explains the choices, their trade-offs and the details to confirm before specifying them.
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Motor & electrical
01
Motor & electrical
Motor winding conductor
Copper vs aluminum motor windings: which is better in a submersible pump?
02
Motor & electrical
Stator core and electrical steel
Thicker laminations vs lower-loss electrical steel: what changes inside a pump motor?
03
Motor & electrical
Rotor and squirrel-cage construction
Copper rotor vs aluminum rotor: does rotor material matter in small pump motors?
04
Motor & electrical
Motor housing material
Engineering plastic, aluminum or stainless motor housing: which pump body is right?
05
Motor & electrical
Rotor shaft / pump shaft material
Ferritic or martensitic stainless, AISI 304 or 316: which pump shaft material should you choose?
06
Motor & electrical
Motor bearings
Standard bearings vs higher-spec branded bearings: when does the upgrade matter?
07
Motor & electrical
Run capacitor / start capacitor
Cheap capacitor vs long-life motor capacitor: what changes in a single-phase submersible pump?
08
Motor & electrical
Thermal motor protection
Internal thermal protector vs no thermal protector: how much protection does a pump motor need?
09
Motor & electrical
Motor insulation system
Class B vs Class F insulation: which is better for a submersible pump motor?
Electrical connection
10
Electrical connection
Power cable length and jacket
5 m vs 10 m power cable — and PVC vs heavy-duty rubber: what should pump buyers choose?
11
Electrical connection
Cable entry and anti-wicking design
Standard cable gland vs molded anti-wicking entry: how does water get into a submersible motor?
Hydraulics
12
Hydraulics
Impeller geometry
Open, semi-open, closed and vortex impellers: what is the difference?
13
Hydraulics
Impeller material
PP, PA66, stainless steel, cast iron or urethane impeller: which material is best-fit?
14
Hydraulics
Pump casing / volute material
Plastic, aluminum, cast iron or stainless pump casing: where should each be used?
15
Hydraulics
Suction strainer and base plate
Fine strainer vs large-open-area inlet: which suction design drains better without clogging?
16
Hydraulics
Discharge connection and hose adaptor
Threaded outlet, stepped hose adaptor or quick connector: which discharge connection is best-fit?
Sealing & lubrication
17
Sealing & lubrication
Shaft sealing arrangement
Lip (skeleton) seal, single mechanical seal or dual mechanical seal: which is better?
18
Sealing & lubrication
Mechanical-seal face material
Carbon/Ceramic vs Silicon Carbide Mechanical Seals: When Should You Consider SiC?
19
Sealing & lubrication
O-rings and elastomer materials
NBR vs EPDM vs FKM: which O-ring material belongs in a submersible pump?
20
Sealing & lubrication
Oil chamber and seal lubrication
Oil chamber vs no oil chamber: does a submersible pump need an oil-filled seal cavity?
Controls
21
Controls
Water-level control
No float, tethered float, vertical float or electronic water sensor: which control is best-fit?
Structure & finishing
22
Structure & finishing
Fasteners and corrosion hardware
Zinc-plated steel vs stainless fasteners: do small screws matter in a submersible pump?
23
Structure & finishing
Surface coating and body color
Natural plastic, painted metal or custom color: what does pump finish change besides appearance?
24
Structure & finishing
Handle, lifting point and installation hardware
Plastic carry handle vs metal lifting handle: what should a pump be lifted by?
Model-Specific Review
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