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How the Well Tank Affects Building Water Pressure & Flow
- How water tanks affect water pressure & flow rate: the function of the well water tank or pressure tank
- How the water pressure tank smooths out changes in water pressure from a private pump and well system
- What defects or damage to water tanks does to building water pressure
- List of water pressure, flow, quantity problem diagnosis & repair procedures
- Questions & Answers about the function of water pressure tanks & water storage tanks where private well water is supplied
- References
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How to track down the reason for bad water pressure in a building. This article describes how the water pressure tank or "well tank" affects water pressure and flow in a building - part of diagnosing bad or lost water pressure.
Green links show where you are. © Copyright 2013 InspectAPedia.com, All Rights Reserved. Author Daniel Friedman.
How might a bad water pressure tank be related to water pressure or water supply loss symptoms
 The basics process of diagnosis and the costs of the repair are explained. Consumer advice on saving money on well repair costs
includes a review of the parts and labor costs of a typical well pump and pressure tank replacement case. Page to sketch is courtesy of Carson Dunlop Associates.
- A bad or defective water pressure tank or water tank bladder can cause well pump short cycling which in turn is hard on the pump (damages the pump) and, especially with an older pump, might push it over the edge of failure.
When the water pump fails the building will lose water supply completely (unless it is served by an artesian well). Our photo (left) shows a Well-X-Trol internal-bladder well tank installed below a one-line jet pump.
See WATER TANK BLADDERS & CAPTIVE AIR for details on how captive air or bladder type well tanks work.
See WATER TANK BLADDER PRESSURE ADJUSTMENT if you need to adjust or fine tune the air charge in a bladder type water tank.
- A leaky or defective steel or glass-lined well tank (tanks without an internal bladder) often loses its air charge and leads to short on-cycles of the water pump. Water tank problems can also lead to poor water pressure or flow in a building.
To review loss of air charge, water pump short cycling, water pump pressure control settings, and other water tank repairs see WATER TANK AIR, HOW TO ADD and also WATER PUMP & WATER TANK REPAIRS.
Other detailed articles on this type of water tank are found at
WATER TANK AIR VOLUME CONTROLS
WATER TANK AIR ADD AT AIR VALVE
WATER TANK AIR ADD BY DRAINING
WATER TANK AIR HOW MUCH TO ADD
WATER TANK AIR HOW OFTEN TO ADD
At WATER TANK LIFE EXPECTANCY we discuss about how long you can expect various types of well tanks or water tanks to last.
At WATER TANK PRESSURE CALCULATIONS we get very detailed about how the peformance of a water tank might be affected by extremes in temperature to which the tank is exposed.
Putting your well tank in hot sun in Arizona or Mexico will give different performance than you can expect from the same tank in a building interior and different again from a tank exposed to sub-zero weather in parts of Canada or northern states of the U.S. Adjustments to the well tank's air charge or operating pressure may be needed.
A water pump might be at end of its life and about to burn up but still work after a cool-down cycle (some pumps have a thermal overload that shuts them off and an automatic reset - especially one that is inaccessible such as a submersible).
In this case water pressure and supply will return after the cool-down problem but the failure is likely to be recurrent. This is not a problem with the well tank.
Diagnostic Steps to Figure Out if the Problem is the Well Tank or Something Else
 Here is a list of well and water pressure diagnostic steps that might help decide if the problem is with the well tank or something else:
Frequently Asked Questions (FAQs) about diagnosing bad water pressure
The role of the water pressure tank or well tank or water storage tank in water pressure troubles
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Questions & answers or comments about the function of water pressure tanks & water storage tanks where private well water is supplied.
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Technical Reviewers & References
Related Topics, found near the top of this page suggest articles closely related to this one.
- Mark Cramer Inspection Services Mark Cramer, Tampa Florida, Mr. Cramer is a past president of ASHI, the American Society of Home Inspectors and is a Florida home inspector and home inspection educator. Mr. Cramer serves on the ASHI Home Inspection Standards. Contact Mark Cramer at: 727-595-4211 mark@BestTampaInspector.com
- John Cranor is an ASHI member and a home inspector (The House Whisperer) is located in Glen Allen, VA 23060. He is also a contributor to InspectApedia.com in several technical areas such as plumbing and appliances (dryer vents). Contact Mr. Cranor at 804-747-7747 or by Email: johncranor@verizon.net
 Carson, Dunlop & Associates Ltd., 120 Carlton Street Suite 407, Toronto ON M5A 4K2. (416) 964-9415 1-800-268-7070 info@carsondunlop.com. The firm provides professional home inspection services & home inspection education & publications. Alan Carson is a past president of ASHI, the American Society of Home Inspectors. Thanks to Alan Carson and Bob Dunlop, for permission for InspectAPedia to use text excerpts from The Home Reference Book & illustrations from The Illustrated Home. Carson Dunlop Associates' provides:
- Commercial Building Inspection Courses - protocol ASTM Standard E 2018-08 for Property Condition Assessments
- Home Inspection Education Courses including home study & live classes at eleven colleges & universities.
- Home Inspection Education Home Study Courses - ASHI@Home Training 10-course program.
Special Offer: Carson Dunlop Associates offers InspectAPedia readers in the U.S.A. a 5% discount on these courses: Enter INSPECTAHITP in the order payment page "Promo/Redemption" space. InspectAPedia.com editor Daniel Friedman is a contributing author.
- The Home Reference Book, a reference & inspection report product for building owners & inspectors.
Special Offer: For a 10% discount on any number of copies of the Home Reference Book purchased as a single order. Enter INSPECTAHRB in the order payment page "Promo/Redemption" space. InspectAPedia.com editor Daniel Friedman is a contributing author.
- The Home Reference eBook, an electronic version for PCs, the iPad, iPhone, & Android smart phones.
Special Offer: For a 5% discount on any number of copies of the Home Reference eBook purchased as a single order. Enter inspectaehrb in the order payment page "Promo/Redemption" space.
- The Illustrated Home illustrates construction details and building components, a reference for owners & inspectors.
Special Offer: For a 5% discount on any number of copies of the Illustrated Home purchased as a single order Enter INSPECTAILL in the order payment page "Promo/Redemption" space.
- The Horizon Software System manages business operations,scheduling, & inspection report writing using Carson Dunlop's knowledge base & color images. The Horizon system runs on always-available cloud-based software for office computers, laptops, tablets, iPad, Android, & other smartphones.
- Access Water Energy, PO Box 2061, Moorabbin, VIC 3189, Australia, Tel: 1300 797 758, email: sales@accesswater.com.au Moorabbin Office: Kingston Trade Centre, 100 Cochranes Rd, Moorabbin, VIC 3189
Australian supplier of: Greywater systems, Solar power to grid packages, Edwards solar systems, Vulcan compact solar systems, water & solar system pumps & controls, and a wide rage of above ground & under ground water storage tanks: concrete, steel, plastic, modular, and bladder storage tanks.
- Cheating on water tests: Testing Water for Real Estate Transactions - make sure your water test is valid
- Diagnosing Clogged Drains: Is it a blocked drain or the septic system? - A First Step for Homeowners
- Life Expectancy of Water Pumps - Well Pumps: how long should a water pump last? What affects pump life?
- Life Expectancy of Wells & Water Tanks how long should a water well and its components last?
- Smart Tank, Installation Instructions [ copy on file as /water/Smart_Tank_Flexcon.pdf ] - , Flexcon Industries, 300 Pond St., Randolph MA 02368, www.flexconind.com, Tel: 800-527-0030 - web search 07/24/2010, original source: http://www.flexconind.com/pdf/st_install.pdf
- Typical Shallow Well One Line Jet Pump Installation [ copy on file as /water/Jet_Pump_Grove_Elect_Jet_Pumps_1.pdf ] - , Grove Electric, G&G Electric & Plumbing, 1900 NE 78th St., Suite 101, Vancouver WA 98665 www.grovelectric.com - web search -7/15/2010 original source: http://www.groverelectric.com/howto/38_Typical%20Jet%20Pump%20Installation.pdf
- Typical Deep Well Two Line Jet Pump Installation [ copy on file as /water/Jet_Pump_Grove_Elect.pdf ] - , Grove Electric, G&G Electric & Plumbing, 1900 NE 78th St., Suite 101, Vancouver WA 98665 www.grovelectric.com - web search -7/15/2010 original source: http://www.groverelectric.com/howto/38_Typical%20Jet%20Pump%20Installation.pdf
- Water Fact Sheet #3, Using Low-Yielding Wells [ copy on file as /water/Low_Yield_Wells_Penn_State.pdf ] - , Penn State College of Agricultural Sciences, Cooperative Extension, School of Forest Resources, web search 07/24/2010, original source: http://pubs.cas.psu.edu/FreePubs/pdfs/XH0002.pdf
- Water pressure tanks - how to diagnose the need for air, how to add air, stop water pump short cycling to avoid damage - water storage water pressure tank safety.
- Water pump and pressure tank repair diagnosis & cost an specific case offers an example of diagnosis of loss of water pressure, loss of water, and analyzes the actual repair cost
- Water pressure tank failures & water pump short cycling diagnosis and repair
- Water Supply & Drain Piping, water and drain pipe types, inspection, diagnosis, repairs, problem materials, clogging, etc.
Books & Articles on Building & Environmental Inspection, Testing, Diagnosis, & Repair
 The Home Reference Book - the Encyclopedia of Homes, Carson Dunlop & Associates, Toronto, Ontario, 25th Ed., 2012, is a bound volume of more than 450 illustrated pages that assist home inspectors and home owners in the inspection and detection of problems on buildings. The text is intended as a reference guide to help building owners operate and maintain their home effectively. Field inspection worksheets are included at the back of the volume. Special Offer: For a 10% discount on any number of copies of the Home Reference Book purchased as a single order. Enter INSPECTAHRB in the order payment page "Promo/Redemption" space. InspectAPedia.com editor Daniel Friedman is a contributing author.
Or choose the The Home Reference eBook for PCs, Macs, Kindle, iPad, iPhone, or Android Smart Phones. Special Offer: For a 5% discount on any number of copies of the Home Reference eBook purchased as a single order. Enter INSPECTAEHRB in the order payment page "Promo/Redemption" space.
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- Carson Dunlop, Associates, Toronto, have provided us with (and we recommend) Carson Dunlop Weldon & Associates' Technical Reference Guide to manufacturer's model and serial number information for heating and cooling equipment
Special Offer: Carson Dunlop Associates offers InspectAPedia readers in the U.S.A. a 5% discount on any number of copies of the Technical Reference Guide purchased as a single order. Just enter INSPECTATRG in the order payment page "Promo/Redemption" space.
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