Pumps, pressure, and machines that outlived their makers
Cost of Motors per HP: Price Examples, Formulas & Calculator
No supported universal or representative industry-average cost of motors per hp is available from the cited sources. For an industrial electric motor, cost per…
By Walt Brenner · 28 August 2026 · 20 min readLatest
Normally Closed Solenoid Valve: How It Works and How to Choose
A normally closed solenoid valve is closed when its coil is de-energized and opens when energized under the model’s specified electrical, pressure, flow-…
Can I Still Buy a Single-Speed Pool Pump Motor?
Check your motor’s total horsepower against the 2025 standard, delayed 2027 enforcement window, and March 2029 cutoff before buying.
DOE Motor Rule 2027: What Changes for Pump Motors
Determine whether a new or replacement pump motor falls under the 2027 DOE efficiency standard and how the limited 2029 enforcement policy applies.
VW Atlas Water Pump Settlement Claim Deadline
Check an Atlas or Atlas Cross Sport VIN, estimate 80% repair reimbursement, and prepare the records needed for the October 5, 2026 postmark.
Multistage Centrifugal Pump Specifications, Features & Applications
How to read, compare, and apply multistage pump data
Wet Switch Flood Detector: WS-1 Guide, Specs & Fit
The DiversiTech/Asurity WS-1 Wet Switch Flood Detector addresses a specific risk: condensate or drain-leak water reaching a monitored area around ducted HVAC…
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Ideas for Sump Pump Discharge: Choose the Right Yard Drainage Setup
A working sump pump does not automatically mean a protected basement. If the exterior discharge releases water where it can flow or seep back toward the…
Water Pressure Tank Problems: Symptoms, Tests, and Fixes
Water pressure tank problems are easy to misdiagnose. A pump that starts whenever you open a faucet may have lost effective tank drawdown, but low pressure,…
NPSH Thread: Sizes, Compatibility, NPT Differences & Identification
An NPSH thread can be easy to confuse with NPT pipe thread or NH/NST fire-hose thread. Two couplings may share a nominal size, look similar, or even begin to…
Pressure Protection Valve: Truck Air-System Selection Guide
A pressure protection valve in a heavy-duty truck or trailer air system cannot be selected safely by matching its appearance, port size, or the largest PSI…
Booster Pump for Irrigation System: Sizing & Buying Guide
A booster pump for an irrigation system should be selected by its duty point: the flow required, in gallons per minute (GPM), at the total head the pump must…
Pump Seal Kit: How to Find the Right Kit for Your Pump
A pump seal kit should be selected by exact pump identity, repair scope, material compatibility, and operating application—not by appearance, a broad family…
Cost to Drill a Water Well: Scope, Depth and Geology
Commercial guides put many standard residential well projects at roughly $5,000–$18,000 for planning, though scope is defined inconsistently.
Normally Open Describes a Solenoid Valve's Power-Off State
It permits flow while de-energized and closes when its coil receives the correct power. "Normally" names the default state, not the position used most often.
PSI per Foot of Water Converts Vertical Head to Pressure
A vertical foot of fresh-water head yields about 0.433 PSI of static gauge pressure. Flowing systems require separate friction and outlet-pressure checks.
Boiler Feed Pump Calculation Links Flow and Head to Power
Near-boiling feedwater is about 4% less dense than cold water. Its actual density governs the conversion from drum pressure into pressure head.
How Long a Well Tank Lasts and What Changes It
Plan on roughly 10-15 years, but use age plus condition, not a birthday deadline. Water at the air valve is stronger failure evidence than age.
Variable Speed Pumps Keep Pressure Steadier Within Limits
A pressure tank normally remains in the system, even though the controller performs most pressure regulation during active demand.