Wellmate Pressure Tanks

Get Genuine Wellmate Fiberglass Tanks Online 

WM Series

Residential Fiberglass Bladder Type Pressure Tanks

WM Series Tanks

WM Series Cutaway

 WM Series captive air tanks are the ideal choice for new or replacement installations in residential, light commercial and pressure boosting applications. A captive air tanks purpose is to reserve pressurized water supplied by the pump. A captive air tank will supply its reserved volume of pressurized water until the pressure switch in the system turns the pump back on to take over the demand and supply the captive air tank another recharge. A captive air tanks primary purpose is to protect a pump motor from *short cycling. *Short cycling is the rapid turning on and off the pump. This will overheat the start winding in a single phase motor causing premature motor failure. The volume of water (draw down) a captive air tank holds is important in its selection of the correct size needed to protect the pump from *short cycling. The size required is based on the recharge time needed by the pump to meet the motors minimum run time for proper cooling between cycles. The proper selection of a captive air tank will increase your pumps life.

Low Profile Tank Cutaway



Low Profile Tank Cutaway

Low Profile Series are designed for height restricted applications such as mobile homes, crawl spaces and closets.

 

Features and Benefits

  • Corrosion-proof composite construction
  • One piece, seamless inner shell molded of premium high-density polyethylene
  • Durable blow-molded interior air cell is fully replaceable and constructed of heavy-gauge engineered polymer
  • Bottom inlet/outlet assembly is custom molded of high-impact PVC
  • Sturdy molded polymeric base is corrosion and impact proof
  • Outer shell is a composite of continuous fiberglass strands sealed with high-grade epoxy resin
  • Greater drawdown than comparably sized steel tanks – for greater efficiency
  • NSF: The entire range of Wellmate Residential Captive Air tanks are listed under ANSI/NSF Standard 61 for water system components.
  • Factory Backed Warranty: Five year warranty – from date of installation.
  • Light Weight – minimizes labor cost; no need for heavy equipment


Specifications

WM Performance Data

Model Number Capacity
Gal/Liters
Maximum
Operating Pressure 
psi/kPa/Bar
Draw Down
30/50 setting**
gal/liters
Diameter
inch/cm
Overall Height*
inch/cm
Height* inlet
outlet to floor
inch/cm
System Connection Assembly Weight*
lb/kg
WM-4 14.5 125 / 862 / 8.6 4.4 / 16.5 16 / 41 26 / 66 1-3/4 / 4.4 1" male NPT 14.5 / 6.6
WM-6 19.8 125 / 862 / 8.6 6.1 / 23 16 / 41 32.5 / 82.5 1-3/4 / 4.4 1" male MNPT 20.85 / 9.5
WM-9 29.5 125 / 862 / 8.6 8.9 / 33.5 16 / 41 44 / 112 1-3/4 / 4.4 1" male NPT 24.75 /11.2
WM-12 40.3 125 / 862 / 8.6 12.1 / 45.8 16 / 41 57 / 145 1-3/4 / 4.4 1" male NPT 30 /13.6
WM-14WB 47.1 125 / 862 / 8.6 14.1 / 53.5 21 / 53 41-1/4 / 105 2-1/4 / 5.7 1-1/4" male NPT 43 / 19.5
WM-20WB 60 125 / 862 / 8.6 18.0 / 68.1 24 / 61 41-1/2 / 105 2-1/4 / 5.7 1-1/4" male NPT 50 /22.7
WM-25WB 86.7 125 / 862 / 8.6 26.0 / 98.5 24 / 61 55-1/4 / 140 2-1/4 / 5.7 1-1/4" male NPT 72.75 / 33.0
WM-35WB 119.7 125 / 862 / 8.6 35.9 / 135.9 24 / 61 74-1/4 / 189 2-1/4 / 5.7 1-1/4" male NPT 95 / 43.1

Low-Profile Performance Data

Model Number Capacity
Gal/Liters
Maximum
Operating Pressure 
psi/kPa/Bar
Draw Down
30/50 setting**
gal/liters
Diameter
inch/cm
Overall Height*
inch/cm
Height* inlet
outlet to floor
inch/cm
System Connection Assembly Weight*
lb/kg
WM-6LP 19.3 100 / 700 / 7.0 5.8 / 21.9 24 / 61 20-1/4 /51 2 1/4 / 5.7 1" male NPT 22.75 / 10.3
WM-10LP 34.5 100 / 700 / 7.0 10.4 / 39.2 24 / 61 28 /71 2-1/4 / 5.7 1" male NPT 29.5 / 13.4

Note:
Maximum external operating temperature 120°F (49°C).
Maximum internal operating temperature 100°F (38°C).
Minimum operating temperature 40°F (4°C).
* Diameter, height and weight may vary slightly without notice.
** In keeping with current industry standards, drawdown factors are based on Boyle's law. Actual drawdowns will very depending upon system variables, including the accuracy and operation of the pressure switch and gauge and operating temperature of the system.


CALL 1-866-960-9621 for Wellmate Tank Parts


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*Shipping Exceptions: AK & HI Not Included.  (click FREE SHIPPING Icon for details >)
Sales Tax Exception: Add sales tax for Florida ship to addresses only!
If picked up here - sales tax is included because there will be no shipping.
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"You may find it somewhere else for less but less always requires a sacrifice"



WM Series Tank Data and Prices

All tanks in stock for immediate shipping

Pressure Tank Sizing Calculator

Model Capacity
Gallons
Water Storage
**30/50 setting
Gallons
Ship Weight
lbs.
Part
Number
Shopping
Cart
View Cart
WM-4 15 4.4 19 CH30837

$217

FREE
Shipping
WM-6 20 5.9 23 CH30840

$199

FREE
Shipping
WM-9 30 8.9 30 CH30854

$281

FREE
Shipping
WM-12 40 12.1 35 CH30866

$436

FREE
Shipping
WM-14WB 47 14.1 48 CH30951

$429

FREE
Shipping
WM-20WB 60 18 55 CH31050

$659

FREE
Shipping
WM-25WB 87 26 78 CH31056

$678

FREE
Shipping


WM-35WB


119


35.9


101


CH31062

$869*

FREE Shipping
*foot note

*Larger Wellmate tanks must be shipped by freight because of their size. NOTE: Residential delivery has just been added as a Free shipping feature. Other freight charges may be added by the carrier if determined and will be collected at the time of delivery. Questions concerning additional delivery cost can be answered by phone at 1-866-960-9621.

WM Series Low-Profile Tank Data and Prices

Model Capacity
Gallons
Water Storage
**30/50 setting
Gallons
Ship Weight
lbs.
Part
Number
Shopping
Cart
View Cart
WM-6LP 19.3 5.8 28 CH31850
$306

FREE
Shipping
WM-10LP 34.5 10.4 35 CH31957
$374

FREE
Shipping

**In keeping with current industry standards, drawdown factors are based on Boyle's law. Actual drawdowns will very depending upon system variables, including the accuracy and operation of the pressure switch and gauge and operating temperature of the system.


Don't Forget the Tank "T" Kit

Tank T Kit Unassembled Tank T Kit Assembled

Pictures shown unassembled and assembled for both sizes


1" Tank "T" Kit
use with
WM Series
(WM-6 Thru WM12)
Low Profile
(WM-6LP and WM-10LP)
$106
FREE
Shipping

1-1/4" Tank "T" Kit
use with
WM Series (WM-14WB Thru WM-35WB)
$106
FREE
Shipping

  • 1" brass tank T fitting
  • 1" short brass nipple
  • 1" PVC union
  • 100PSI Gauge
  • 40/60PSI SD switch
  • 3" x 1/4" brass nipple
  • 100PSI relief valve
  • 1-1/4" brass tank T fitting
  • 1-1/4" short brass nipple
  • 1-1/4" PVC union
  • 100PSI Gauge
  • 40/60PSI SD switch
  • 3" x 1/4" brass nipple
  • 100PSI relief valve

Just need a pressure switch?

Square D Pump Pressure Switch

Square D Pressure Switch Instructions
Square D Pressure Switch Wiring Diagram



30/50 PSI Model
$39
FREE
Shipping






$29
with additional purchase


40/60 PSI Model
$39
FREE
Shipping






$29
with additional purchase


40/60 PSI
Low Pressure Cut Out Model

(Similar to picture but
with manual reset lever)
$49
FREE
Shipping





$39
with additional purchase





Need a Replacement Air Cell Kit ?

Air Cell Installation Manual

WM-25WB
87 Gallon
Air Cell Kit

$299
FREE
Shipping

WM-35WB
119 Gallon
Air Cell Kit

$469
FREE
Shipping



WM Air Cell Installation Manuals Product Literature Replacement Parts
Tech Guides Pressure Tank Sizing Calculator FAQ's

 

Want an alternative to your high cost for a large captive air tank?
Stop short cycling, get steady water pressure and reduce tank
size on your present pump system using a Cycle Stop Valve.


What are Cycle Stop Valves?

Got More Questions? Get them answered at
Cycle Stop Valve - Web Site

Cycle Stop Kit

Use Our 50PSI Cycle Stop Constant Pressure Valve Kit Complete With WM-6 20 Gallon Tank


Kit Includes

  • CSV150 50PSI Cycle Stop Valve
  • Brass Tank T
  • 100PSI Pressure Relief Valve/Pipe Plug (PVC)
  • 40/60 PSI Square D Switch
  • 100 PSI Liquid Filled Gauge
  • (2) 1" NPT Brass Nipples
  • 1 Inch (PVC) Union
  • WM6 20 Gallon Tank
  • Installation Instructions For Cycle Stop Valve

NOTE; A Cycle Stop Valve or CSV is a simple device that drastically reduces the number of times a pump is cycled on and off. The Cycle Stop Valve can be used with very small pressure tanks and still double or triple the life of any pump or motor. The CSV controls the amount of water being pumped to exactly match the amount of water being used. This means the CSV can be used with very small pressure tanks because there is no extra water being pumped to cause the tank to fill. Pumping more water than is being used is what causes the pump to cycle on and off repeatedly. Cycling on and off repeatedly causes the pump, motor, controls, and bladder pressure tank to wear out prematurely.


40PSI Kit
$419
FREE
Shipping
 


50PSI Kit
$419
FREE
Shipping
 

60PSI Kit
$419
FREE
Shipping
 

Adjustable Pressure Kit
(15-150PSI)
$509
FREE
Shipping
 



Just Want The Cycle Stop Valve ?

CSV Cycle Stop Valve
Fixed Cycle Stop Valve Enlarged
CSV Cycle Stop Valve
Fixed Cycle Stop Valve Enlarged
CSV Cycle Stop Valve
Fixed Cycle Stop Valve Enlarged
CSV1Z Adjustable Cycle Stop Valve
Adjustable Cycle Stop Valve Enlarged

CSV140 40PSI
1" FNPT Valve
$104
FREE
Shipping
 

CSV150 50PSI
1" FNPT Valve
$104
FREE
Shipping
 

CSV160 60PSI
1" FNPT Valve
$104
FREE
Shipping
 

CSV1Z Brass
1" FNPT / 1-1/4" MNPT Valve
(Adjustable 15-150PSI)
$199
FREE
Shipping


 

Please Note: FREE shipping is to the lower US 48 States on all pumps. There is Sales Tax that applies only to Florida residents without a resale certificate.    See Shipping Details

Please call 1-866-960-9621 for all other pumps.