Comparisons
Bladder vs diaphragm pressure tanks
Both kinds keep air and water apart inside the tank so the air cushion does not disappear. They differ in how.
This is a referral line. When you call, you are connected with an independent local well pump company.
Bladder tanks
Water fills a flexible bag inside the tank, and air surrounds it. When the bag fails, water can fill the tank and the pump short cycles.
Diaphragm tanks
A flexible sheet divides the tank into an air side and a water side. When it fails, the effect is similar: lost air cushion and short cycling.
Older tanks
Some older tanks have no separator at all, so the air slowly mixes into the water and the tank needs air added. Tell the company if you know your tank is old.
Choosing a replacement
Size and setup matter more than the label. Ask the company how they sized the tank for your pump and household, and whether it is matched to your pressure switch settings.
Tank location and fittings
Whatever the type, the tank connects to the system through a fitting that often holds the pressure switch, gauge and valves. Leaks and corrosion at that fitting are common. Ask the company to look at it when they check the tank, and whether replacing it makes sense at the same time. Also ask whether the new tank will sit in the same spot, and whether it needs a stand or a drain valve nearby so future service is easier.
Questions
Which is better?
Both are common. Ask the company which they install and why.
Can either be repaired?
A failed separator usually means a new tank.
Does tank size matter?
Yes. A tank that is too small makes the pump start more often.
Related help
Want to talk it through?
Call and get connected with a local well pump company.
Call about your well(928) 655-8940