Wellmate Pressure Tanks

WellMate's tanks feature corrosion-proof composite construction that require little or no maintenance, plus their light weight makes them easier and less costly to install. All materials meet stringent U.S. Requirements for water components and are NSF and/or FDA listed materials. WellMate continues its tradition of excellence by offering features and benefits steel tanks cannot match.

These rustproof WellMate pressure tanks are made with blow molded, fiberglass wrapped, seamless construction. They won't rust, dent, or come apart at the seams because there are no seams, and a rugged base is included. Full five-year limited warranty.

These tank now features the quick connect that snaps securely into place and is retained by an H-clip. 
Wellmate Quick Connect Features PDF 146kb

Wellmate Pressure Tanks
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Use our Pressure Tank Cross Reference

WellMate Pressure Tanks

  Tank Size Total System Drawdown Tank Ship    
Model No. Dia X Height Volume @30/50 (PSI) @40/60 (PSI) Connection Weight    
Fiberglass 20 Gallon Bladder Pressure Tank - WM-6 WM-6 16" X 32" 20 gallons 5.9 gallons 5.1 gallons 1" NPTM 19 lbs.
Price: $149.00
Temporarily Out of Stock
Fiberglass 30 Gallon Bladder Pressure Tank - WM-9 WM-9 16" X 44" 30 gallons 8.9 gallons 7.7 gallons 1" NPTM 31 lbs.
Price: $219.00
Temporarily Out of Stock
Fiberglass 40 Gallon Bladder Pressure Tank - WM-12 WM-12 16" X 57" 40 gallons 12.2 gallons 10.5 gallons 1" NPTM 29 lbs.
Price: $278.00
Temporarily Out of Stock
Fiberglass 47 Gallon Bladder Pressure Tank - WM-14WB WM-14WB 21" X 41" 47 gallons 14.1 gallons 12.2 gallons 1 1/4" NPTM 48 lbs.
Price: $389.00
Temporarily Out of Stock
Fiberglass 60 Gallon Bladder Pressure Tank - WM-20WB WM-20WB 24" X 42" 60 gallons 18 gallons 16.2 gallons 1 1/4" NPTM 55 lbs.
Price: $659.00
Temporarily Out of Stock
Fiberglass 87 Gallon Bladder Pressure Tank - WM-25WB WM-25WB 24" X 55" 87 gallons 26 gallons 22.5 gallons 1 1/4" NPTM 82 lbs.
Price: $665.00
Temporarily Out of Stock
Fiberglass 120 Gallon Bladder Pressure Tank - WM-35WB WM-35WB 25" X 75" 120 gallons 34.2 gallons 29.6 gallons 1 1/4" NPTM 121 lbs.
Price: $869.00
Temporarily Out of Stock

Installation Tee Packages

Installation Tee Package For WELLMATE WM-6, WM-9, WM-12 Well Tanks Installation Tee Package For WELLMATE WM-6, WM-9, WM-12 Well Tanks
Model: WM-T1

Tee Package to install your WELLMATE WM-6, WM-9, WM-12 Pressure Tank Includes:

  • Solid Brass Tee
    • Tank Connection: 1" FPT
    • In-Line Connections: 1" MPT x 3/4" FPT
    • Drain / Relief Ports: (2) 1/2" FPT
    • Accessory Ports: (2) 1/4" FPT
    • Length: 4 1/2"
  • Check Valve (1" FPT)
  • Shutoff Valve (1" FPT)
  • 1" NPTM x 1" Brass Barb
  • Boiler Drain (1/2" MPT)
  • Pressure Relief Valve, preset at 100 PSI (1/2" MPT)
  • Brass Riser (1/4" x 3" MPT)
  • Pressure Gauge (1/4" MPT)
  • Pressure Switch, choose from 30/50, 40/60, 50/70 or 60/80 PSI at checkout (additional $46.00 charge for 50/70 & 60/80). 
Price: $109.00

*FREE Shipping!
Installation Tee Package For WELLMATE WM-14WB, 20WB, 25WB, 35WB Well Tanks - 1" Legs Installation Tee Package For WELLMATE WM-14WB, 20WB, 25WB, 35WB Well Tanks - 1" Legs
Model: WM-T2

Tee Package to install your WELLMATE WM-14WB, W20, 25WB, 35WB Pressure Tank Includes:

  • Solid Brass Tee
    • Tank Connection with coupling: 1 1/4" FPT
    • In-Line Connections: 1" MPT
    • Drain / Relief Ports: (2) 3/4" FPT
    • Accessory Ports: (2) 1/4" FPT
    • Length: 4 1/2"
  • Check Valve (1" FPT)
  • Shutoff Valve (1" FPT)
  • 1" NPTM x 1" Brass Barb
  • (2) Close Nipples (1" MPT)
  • Boiler Drain (1/2" MPT)
  • Pressure Relief Valve, preset at 100 PSI (1/2" MPT)
  • Brass Riser (1/4" x 3" MPT)
  • Pressure Gauge (1/4" MPT)
  • Pressure Switch, choose from 30/50, 40/60, 50/70 or 60/80 PSI at checkout (additional $46.00 charge for 50/70 & 60/80).  
Price: $129.00

*FREE Shipping!
Installation Tee Package For WELLMATE WM-14WB, 20WB, 25WB, 35WB Well Tanks - 1 1/4" Legs Installation Tee Package For WELLMATE WM-14WB, 20WB, 25WB, 35WB Well Tanks - 1 1/4" Legs
Model: WM-T2-1.25

Tee Package to install your WELLMATE WM-14WB, 20WB, 25WB, 35WB Pressure Tank Includes:

  • Solid Brass Tee
    • Tank Connection: 1 1/4" FPT
    • In-Line Connections: 1 1/4" MPT x 1" FPT
    • Drain / Relief Ports: (2) 3/4" FPT
    • Accessory Ports: (2) 1/4" FPT
    • Length: 4 1/2"
  • Check Valve (1 1/4" FPT)
  • Shutoff Valve (1 1/4" FPT)
  • 1 1/4" NPTM x 1 1/4" Brass Barb
  • Boiler Drain (3/4" MPT)
  • Pressure Relief Valve, preset at 100 PSI (3/4" MPT)
  • Brass Riser (1/4" x 3" MPT)
  • Pressure Gauge (1/4" MPT)
  • Pressure Switch, choose from 30/50, 40/60, 50/70 or 60/80 PSI at checkout (additional $46.00 charge for 50/70 & 60/80).  
Price: $149.00

*FREE Shipping!
Stainless Steel Installation Tee Package For WELLMATE WM-6, WM-9, WM-12 Well Tanks Stainless Steel Installation Tee Package For WELLMATE WM-6, WM-9, WM-12 Well Tanks
Model: WM-T1-SS

Tee Package to install your WELLMATE WM-6, WM-9, WM-12 Pressure Tank Includes All Stainless Steel Components:

  • Stainless Steel Tee
    • Tank Connection with coupling: 1" FPT
    • In-Line Connections: 1" MPT x 3/4" FPT
    • Drain / Relief Ports: (2) 1/2" FPT
    • Accessory Ports: (2) 1/4" FPT
    • Length: 4 1/2"
  • Check Valve (1" FPT)
  • Shutoff Valve (1" FPT)
  • 1" NPTM x 1" Barb
  • Boiler Drain (1/2" MPT)
  • Pressure Relief Valve, preset at 100 PSI (1/2" MPT)
  • Riser (1/4" x 3" MPT)
  • Pressure Gauge (1/4" MPT)
  • Pressure Switch, choose from 30/50, 40/60, 50/70 or 60/80 PSI at checkout (additional $46.00 charge for 50/70 & 60/80).  
  • Teflon Tape for Stainless Steel included
Price: $169.00

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Stainless Steel Installation Tee Package For WELLMATE WM-14WB, 20WB, 25WB, 35WB Well Tanks - 1" Legs Stainless Steel Installation Tee Package For WELLMATE WM-14WB, 20WB, 25WB, 35WB Well Tanks - 1" Legs
Model: WM-T2-SS

Tee Package to install your WELLMATE WM-14WB, W20, 25WB, 35WB Pressure Tank Includes All Stainless Steel Components:

  • Stainless Steel Tee
    • Tank Connection with Coupling: 1 1/4" FPT
    • In-Line Connections: 1" MPT x 3/4" FPT
    • Drain / Relief Ports: (2) 1/2" FPT
    • Accessory Ports: (2) 1/4" FPT
    • Length: 4 1/2"
  • Check Valve (1" FPT)
  • Shutoff Valve (1" FPT)
  • 1" NPTM x 1" Barb
  • (2) Close Nipples (1" MPT)
  • Boiler Drain (1/2" MPT)
  • Pressure Relief Valve, preset at 100 PSI (1/2" MPT)
  • Riser (1/4" x 3" MPT)
  • Pressure Gauge (1/4" MPT)
  • Pressure Switch, choose from 30/50, 40/60, 50/70 or 60/80 PSI at checkout (additional $46.00 charge for 50/70 & 60/80). 
Price: $169.00

*FREE Shipping!
Stainless Steel Installation Tee Package For WELLMATE WM-14WB, 20WB, 25WB, 35WB Well Tanks - 1 1/4" Legs Stainless Steel Installation Tee Package For WELLMATE WM-14WB, 20WB, 25WB, 35WB Well Tanks - 1 1/4" Legs
Model: WM-T2-1.25-SS

Tee Package to install your WELLMATE WM-14WB, 20WB, 25WB, 35WB Pressure Tank Includes All Stainless Steel Components:

  • Stainless Steel Tee
    • Tank Connection with Coupling: 1 1/4" FPT
    • In-Line Connections: 1 1/4" MPT x 1" FPT
    • Drain / Relief Ports: (2) 3/4" FPT
    • Accessory Ports: (2) 1/4" FPT
    • Length: 4 1/2"
  • Check Valve (1 1/4" FPT)
  • Shutoff Valve (1 1/4" FPT)
  • 1 1/4" NPTM x 1 1/4" Barb
  • Boiler Drain (3/4" MPT)
  • Pressure Relief Valve, preset at 100 PSI (3/4" MPT)
  • Riser (1/4" x 3" MPT)
  • Pressure Gauge (1/4" MPT)
  • Pressure Switch, choose from 30/50, 40/60, 50/70 or 60/80 PSI at checkout (additional $46.00 charge for 50/70 & 60/80). 
Price: $209.00

*FREE Shipping!

Replacement Air Cells

WM-6 / WM0075 Butyl Air Cell Replacement Kit - Quick Connect Series WM-6 / WM0075 Butyl Air Cell Replacement Kit - Quick Connect Series
WM-6 / WM0075 Butyl Air Cell Replacement Kit for the Wellmate Quick Connect Series and the older style WM-6 with a fixed MPT connection.

Note: Air Cell Replacements should always be set 2 PSI below the cut in of your pressure switch. Pressure switch settings should not exceed a 20 PSI differential between cut in and cut out.
Price: $144.00
Temporarily Out of Stock
WM-9 / WM0120 Butyl Air Cell Replacement Kit - Quick Connect Series WM-9 / WM0120 Butyl Air Cell Replacement Kit - Quick Connect Series
WM-9 / WM0120 Butyl Air Cell Replacement Kit for Wellmate Quick Connect Series and the older style WM-9 with a fixed MPT connection.

Note: Air Cell Replacements should always be set 2 PSI below the cut in of your pressure switch. Pressure switch settings should not exceed a 20 PSI differential between cut in and cut out.
Price: $172.00
Temporarily Out of Stock
WM-12 / WM0150 Butyl Air Cell Replacement Kit - Quick Connect Series WM-12 / WM0150 Butyl Air Cell Replacement Kit - Quick Connect Series
WM-12 / WM0150 Butyl Air Cell Replacement Kit for the Wellmate Quick Connect Series and the older style WM-12 with a fixed MPT connection.

Note: Air Cell Replacements should always be set 2 PSI below the cut in of your pressure switch. Pressure switch settings should not exceed a 20 PSI differential between cut in and cut out.
Price: $199.00
Temporarily Out of Stock
WM-14WB / WM0180 Butyl Air Cell Replacement Kit - Quick Connect Series WM-14WB / WM0180 Butyl Air Cell Replacement Kit - Quick Connect Series
WM-14WB / WM0180 Butyl Air Cell Replacement Kit for the Wellmate Quick Connect Series and the older style WM-14 with a fixed MPT connection.

Note: Air Cell Replacements should always be set 2 PSI below the cut in of your pressure switch. Pressure switch settings should not exceed a 20 PSI differential between cut in and cut out.
Price: $219.00
Temporarily Out of Stock
WM-20WB / WM0235 Butyl Air Cell Replacement Kit - Quick Connect Series WM-20WB / WM0235 Butyl Air Cell Replacement Kit - Quick Connect Series
WM-20WB / WM0235 Butyl Air Cell Replacement Kit for the Wellmate Quick Connect Series and the older style WM-20 with a fixed MPT connection.

Note: Air Cell Replacements should always be set 2 PSI below the cut in of your pressure switch. Pressure switch settings should not exceed a 20 PSI differential between cut in and cut out.
Price: $224.00
Temporarily Out of Stock
WM-25WB / WM330 Butyl Air Cell Replacement Kit - Quick Connect Series WM-25WB / WM330 Butyl Air Cell Replacement Kit - Quick Connect Series
WM-25WB / WM330 Butyl Air Cell Replacement Kit for the Wellmate Quick Connect Series and the older style WM-25 with a fixed MPT connection.

Note: Air Cell Replacements should always be set 2 PSI below the cut in of your pressure switch. Pressure switch settings should not exceed a 20 PSI differential between cut in and cut out.
Price: $239.00
Temporarily Out of Stock
WM-35WB / WM0450 Butyl Air Cell Replacement Kit - Quick Connect Series WM-35WB / WM0450 Butyl Air Cell Replacement Kit - Quick Connect Series
WM-35WB / WM0450 Butyl Air Cell Replacement Kit for the Wellmate Quick Connect Series and the older style WM-35 with a fixed MPT connection.

Note: Air Cell Replacements should always be set 2 PSI below the cut in of your pressure switch. Pressure switch settings should not exceed a 20 PSI differential between cut in and cut out.
Price: $387.00
Temporarily Out of Stock
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