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Specifications:
Description: WellMate Fiberglass Pre-charged 47 Gallon Bladder Tank WM14WB. Equivalent in drawdown to a 140 gallon galvanized atmospheric tank.
Volume: 47 Gallons.
Inner liner: Blow-molded polyethylene.
Outer shell: Filament wound with fiberglass roving and epoxy resin.
Bladder: Heavy-gauge polyurethane (Separates air and water).
Bottom connection assemnbly:
High-impact PVC
Air connection: Standard tire valve.
Precharge: 24 PSI as per DOT CFR Title 49. Pressure must be adjusted accordingly upon final product installation
Recommended Precharge:4 PSI lower than pump cut-in pressure
Maximum operating pressure:100 PSI
Maximum temperature: 120 degrees Fahrenheit
Connection: 1-1/4" MNPT (Male pipe thread)
Carton dimension: 41" H X 21.5" W X 21.5" L
Weight: 42 lbs.
All materials are NSF and FDA listed Warranty Period: Factory 5 years warranty period for potable water residential installations and 2 years for non-residential installations.
Wellmate Pressure Tank WM14WB Drawdown In Gallons At Various Pressure Ranges
Tank Drawdown In Gallons
Pressure Range (PSI)
13.60
20/40
14.10
30/50
12.22
40/60
10.81
50/70
9.87
60/80
705
80/100
Tank drawdown is he amount of water that can be removed from a tank, when it is full, before the tank pressure drops and the pump is turned on to refill the tank. A larger tank gives more drawdown which means that more water is available before the pump is needed.
Pressure relief valve 1/2" heavy duty, no lead, bronze pressure relief valve for shallow, deep well and submersible pumps. Recommended only for cold water system installation. Spring loaded and pre-set at 100 PSI (Not adjustable). Not for use with hot water heaters.
Drawdown refers to the amount of water that evacuates the tank before the pressure switch will activate the pump. Drawdown is a affected by the pump, the size of the tank and the pressure settings that govern your water system.
What is the warranty on WellMate tanks?
All WM WellMate tanks carry a five year limited factory warranty for potable water residential installations and 2 years for non-residential installations.
Does the warranty cover labor?
No, unfortunately there are number of factors that can contribute to a failed tank and the only factor that WellMate can insure is the tank.
How does a pressure switch control the pump and tank?
The pressure switch communicates with the tank and the pump. The pressure switch monitors the pressure inside the tank and activates and de-activates the pump when cut-in and cut-out pressures are reached inside the tank.
How much pre-charge should I have in my WellMate tank?
Your tanks should be pressurized to 4 PSIG less than the cut-in pressure setting (for example, if your pressure settings are 30/50, then you cut-in pressure setting is 30 PSIG and your tank should have a 26 PSIG pre-charge).
How do you check or change the air cell pressure?
To check the pressure in the air cell, the power supply to the well pump must be turned off and the water must be drained from the pressure tank.. With the pump turned off and the water drained from the pressure tank a standard tire gauge can be used on the valve stem at the top of the tank. The pressure in the air cell should be 4 psi lower than the pump cut-in pressure.
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