Pressure Tanks

Shop pressure tanks for residential, agricultural, and light commercial water systems, featuring the Pentair WellMate composite line along with a handful of other trusted brands. Pressure tanks help maintain consistent water pressure, reduce pump cycling, and extend pump life for well and municipal water systems alike.

PENTAIR WELLMATE

WellMate composite pressure tanks are built from continuous fiberglass strands sealed with high-grade epoxy resin, giving them corrosion resistance that steel tanks can't match along with roughly half the weight of a comparable steel tank — making installation easier for a two-person job. The WM Series ranges from compact in-line tanks (2 and 4.6 gallons) up to large-capacity vertical tanks like the WM-25WB at 86.7 gallons, with drawdown capacities scaling accordingly — for example, the WM-9 delivers 29.5 gallons of capacity with roughly 8.9 gallons of usable drawdown at 30/50 PSI. All WM Series tanks are rated for a maximum working pressure of 125 PSI and are WQA-tested and NSF/ANSI certified for potable water use.

OTHER BRANDS

We also carry a select range of steel bladder and diaphragm pressure tanks to fit different budget and application needs, from compact residential units to larger commercial capacities.

Available in a range of sizes and connection types, from small 2-gallon in-line tanks to large 85+ gallon composite tanks, our pressure tank lineup covers new well installations, replacements, and system upgrades.

Wellmate -

WellMate WM-25WB CLASSIC 86.7-Gallon Composite Pressure Tank (DUPLICATE DELETE)

The WellMate WM-25WB is an 86.7-gallon (328-liter) composite pressure tank designed for residential, agricultural, and light commercial water systems. Its corrosion-proof construction and lightweight design offer significant advantages over traditional steel tanks.

$2,007.00

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Wellmate -

WellMate WM-14WB C 47.1-Gallon Composite Pressure Tank – Durable & Lightweight

Fiberglass pressure tank, 47 gallon, 21"D x 42"H, 125 psig max, 1¼" MPT connection, suitable for potable water. 5 year warranty. Stocked in Doraville Warehouse

$1,468.00

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Wellmate -

WellMate WM-25WB C 86.7-Gallon Composite Pressure Tank

$2,007.00

Out of stock

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Wellmate -

WellMate WM-35WB CLASSIC (CH31062) 119-Gallon Composite Pressure Tank

The WellMate WM-35WB Classic (CH31062) is a corrosion-proof well pressure tank that is made with a composite of continuous fiberglass strands sealed with high-grade epoxy resin. They won't rust, dent, or come apart at the seams, and a rugged impact proof base is included. The WellMate WM-35WB comes with a 5 year warranty with a one year replacement labor allowance.

Features:

Corrosion-proof composite construction
Won’t rust in corrosive environments, particularly important in coastal regions
Little or no maintenance
Longer life, greater flexibility
Light weight
Replaceable air cell

Fiberglass Water Tank, Precharged, Tank; Vertical Tank Style, Full Acceptance, Inlet/Outlet MNPT 1-1/4 In., Precharge Pressure 40 PSI, Max. Working Pressure 125 PSI, Max. Temp. 120 F, Height 75-3/8 In., Dia. 24 In, non-ASME. 92# shipping weight. 5 year warranty.

$2,948.00 $3,684.00

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Wellmate -

Tank-Pressure.020.C 20 Gallon Composite Pressure Tank

The Tank-Pressure.020.C is a robust 20-liter stainless steel pressure tank designed for various industrial applications. Its durable construction ensures longevity and reliable performance in demanding environments.

$724.00

Out of stock

Pentair -

Pentair Comptec CPV-185T 185-Gallon Composite Captive Air Tank

The Pentair Comptec CPV-185T is a composite captive air tank designed to maintain system pressure when the pump is not operating, thereby enhancing the longevity of both the pump and the overall water system.

Fiberwound pressure tank, 185 gallon, vertical tank style, full acceptance, max working pressure 125 PSI., max temp 120°F. 2" FPT connection, 316 stainless. Nonstock. Price does not include freight.

$9,356.00

Out of stock

Wellmate -

WellMate WM-14WB QC 47.1-Gallon Composite Pressure Tank

The WellMate WM-14WB QC is a 47.1-gallon (178-liter) composite pressure tank designed for residential, light commercial, and pressure boosting applications.Its corrosion-proof construction and lightweight design offer significant advantages over traditional steel tanks. 21"D x 42"H, 125 psig max, 1¼" MPT connection, suitable for potable water. 5 year warranty. Stocked in Doraville Warehouse

$1,468.00

Out of stock

Tank Screen Cover, 16" Standard -

Tank Screen Cover, 16" Standard Rain Harvesting Pty Rainwater

Rain Harvesting 16-inch standard tank screen cover. Fits over the tank manway opening to keep out debris, insects, and light while allowing water to pass through.

$65.00

Out of stock

Rain Harvesting Pty Ltd -

Tank Screen Cover, 12" Standard Rain Harvesting Pty Rainwater

Rain Harvesting 12-inch standard tank screen cover. Fits over the tank inlet opening to keep out debris, insects, and light while allowing water to pass through.

$27.29

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Wellmate -

Wellmate WM-12 / WM0150 40 Gallon - Fiberglass Tank

The WellMate WM-12 (also known as WM0150) is a 40.3-gallon composite pressure tank designed for residential and light commercial water systems. Its corrosion-resistant fiberglass construction ensures durability and longevity, making it an ideal choice for environments where steel tanks are prone to rust.

$1,002.00

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Wellmate -

WellMate WM-20 Classic (CH31050) 60-Gallon Composite Pressure Tank

The WellMate WM-20 Classic (Part Number: CH31050) is a 60.0-gallon (227-liter) composite pressure tank designed for residential, light commercial, and pressure boosting applications. Its corrosion-proof construction and lightweight design offer significant advantages over traditional steel tanks.

$1,944.00

Out of stock

Tank-Pressure.002SS – 2L Stainless Steel Pressure Tank for Water Systems

The Tank-Pressure.002SS is a compact 2-liter stainless steel pressure tank designed for small-scale water systems. Its durable construction ensures longevity and reliable performance in various applications.

$30.00

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Wellmate -

Wellmate WM-12 QC 40 Gallon - Fiberglass Tank Quick Connect

40.3-gallon WellMate Composite Pressure Tank with a Quick Connect bottom connection, replaceable air cell, and corrosion-resistant fiberglass construction. Designed for residential and light commercial well-water pressure systems.

Key Specifications:

- Brand/Model: WellMate WM-12 / WM0150

- Capacity: 40.3 gallons (153 liters)

- Drawdown: approx. 12.1 gallons (45.8 L) at 30/50 psi switch setting

- Material: Fiberglass composite (HDPE liner, fiberglass filament wound outer shell, epoxy resin sealed)

- Connection: 1" male NPT with Quick Connect bottom fitting

- Tank Dimensions: 16" diameter x 57" overall height

- Maximum Operating Pressure: 125 psi (8.6 bar)

- Maximum Temperature: 120°F

- Assembly Weight: approx. 29 lb

- Warranty: 5 years

$1,442.00

Out of stock

Wellmate -

WellMate WM-25WB QC 86.7-Gallon Pressure Tank

The WellMate WM-25WB QC is an 86.7-gallon composite Fiberglass pressure tank built for residential, agricultural, and light commercial water systems. It features a rustproof fiberglass construction and Quick Connect (QC) bottom plumbing for simplified installation and maintenance. 24"D x 56"H, 125 psig max, 1¼" MPT connection, suitable for potable water. Replaceable bladder, 5 year warranty. Stocked in Doraville Warehouse

$2,007.00

Out of stock

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