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Amtrol Well-X-Trol Pressure Tanks

WELL-X-TROL Professional redefined the industry with its advanced engineering and innovative product design including the pre-pressurized well tank, sealed-in air charge, and unique water chamber design.  With proven performance since 1963, WELL-X-TROL Professional continues to deliver unparalleled results making it the most trusted choice of professionals in today's market.  WELL-X-TROL Professional offers many unique features that result in consistent, reliable performance, including design elements that prevent tank corrosion and reduce wear and tear on the well pump.

The NEW Next Generation tanks feature:

  • NEW Antimicrobial Liner Protection  Kills over 99.9% of bacteria on contact
  • High Strength Steel Construction with internal bracing
  • Tuf-Kote Indoor/Outdoor Coating to withstand severe environments
  • Patent pending DuraBase® synthetic stand for stable, corrosion-proof support (available for most stand models)
  • Turbulator Water Circulation Device to agitate water as it enters the tank to reduce sediment build-up and extend the tank life
  • 7 Year Warranty

Amtrol Well-X-Trol Pressure Tanks

How to Size a Pressure Tank

Not interested in doing all the math below? Enter your values here to calculate.


Enter your pump output, desired runtime, and pressure switch settings to find the proper size tank.


Pump Output in GPM

Desired Runtime *

Pressure Switch Cut In PSI

Pressure Switch Cut Out PSI

* Recommended Minimum Runtime:
Up to 3/4 HP - 1 Minute
1 to 2 HP - 2 Minutes
2 HP and up - 3 Minutes


Since its inception in 1964, the pre-pressurized potable water tank has assumed various designs and has proven useful in a wide variety of open-system applications. Originally used in well installations, this technology gained widespread acceptance and was soon applied in a variety of applications requiring pressurized water storage. With this flexibility, however, can come confusion as to installation scenarios and related sizing. Below, we 'll take a look at proper use and related sizing techniques in such applications as pump cycle control, volume maintenance, and water treatment systems.

Common to the below examples is the fact that it is necessary to determine both the amount of tank storage needed and the pressures necessary to obtain that storage. Simply stated: All sizings use the same principle with different values. Referred to as Boyle's Law of Ideal Gases, this principle will be used to determine how much water is stored in tank at a given pressure. This multiplier will be referred to as the Acceptance Factor. Keep this equation in mind as a foundation to size any pre-pressurized tank:

Pump Systems

It is common knowledge in the water systems industry that cycling a pump motor rapidly will often lead to failure. To prevent this, most pump manufacturers normally recommend a minimum pump runtime of 2 minutes. In order to achieve the runtime, the pre-pressurized tank must store a given volume of water between pump cycles. Doing so requires the pump to run for a specific period to fill the tank. In general, larger pumps require longer intervals between start cycles. When sizing a pre-pressurized tank for the above purpose, the following information should be known: Pump horsepower, pump output in gallons per minute (GPM), and pressure switch setting in psi (cut-in & cut-out). The below procedure will guide you through a sizing scenario using a 1hp pump. The pump will be operating at 15 GPM with a pressure switch setting of 40psi cut-in and 60psi cut-out. The Acceptance Factors have already been calculated in the chart provided. The figures are based on a tank precharge (initial air charge) set 2psi below pump cut-in pressure.

According to the "Recommended Minimum Runtime" notation, a 1hp pump should operate for a period of at least 2 minutes between motor starts. In order to run a 15GPM pump for 2 minutes, 30 gallons of storage is necessary. The Acceptance Factor indicates that 27% of a given tank's volume will be usable water between 40 and 60psi. Dividing 30 by an acceptance factor of .27 results in a tank with a volume of 111 gallons.

Well-X-Trol Professional Inline Models

Model Tank Size Total Volume Drawdown
@30/50 (PSI)
Drawdown
@40/60 (PSI)
Connector Ship Weight Price
Amtrol Well-X-Trol WX-101, 2 Gallon Inline Water Pressure Tank WX-101 8" X 13" 2 gallons 0.6 gallons 0.6 gallons 3/4" NPTM 5 lbs.

MSRP $109.00

OUR PRICE $99.00

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Amtrol Well-X-Trol WX-102, 4.4 Gallon Inline Water Pressure Tank WX-102 11" X 15" 4.4 gallons 1.4 gallons 1.2 gallons 3/4" NPTM 9 lbs.

MSRP $149.00

OUR PRICE $109.00

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Amtrol Well-X-Trol WX-103, 7.6 Gallon Inline Water Pressure Tank WX-103 11" X 22" 7.6 gallons 2.4 gallons 2 gallons 3/4" NPTM 15 lbs.

MSRP $243.00

OUR PRICE $169.00

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Well-X-Trol Professional Pump Stand Models

Model Tank Size Total Volume Drawdown
@30/50 (PSI)
Drawdown
@40/60 (PSI)
Connector Ship Weight Price
Amtrol Well-X-Trol 7.4 Gallon Water System Pump Stand Pressure Tank - WX-110PS WX-110PS 11" x 18 1/4" 7.4 gallons 2.3 gallons 1.9 gallons 3/4" NPTM 15 lbs.

MSRP $297.00

OUR PRICE $209.00

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Amtrol Well-X-Trol 14 Gallon Water System Pump Stand Pressure Tank - WX-200PS WX-200PS 15 3/8" x 20 7/8" 14 gallons 4.8 gallons 4.1 gallons 1" NPTM 29 lbs.

MSRP $517.00

OUR PRICE $309.00

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Well-X-Trol Professional Horizontal Models

Model Tank Size Total Volume Drawdown
@30/50 (PSI)
Drawdown
@40/60 (PSI)
Connector Ship Weight Price
Amtrol Well-X-Trol 20 Gallon Water System Horizontal Pressure Tank - WX-202-H WX-202-H 15 3/8" x 28 5/8" 20 gallons 6.8 gallons 5.9 gallons 1" NPTM 33 lbs.

MSRP $456.00

OUR PRICE $309.00

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Well-X-Trol Professional Durabase Composite Stand Models

Model Tank Size Total Volume Drawdown
@30/50 (PSI)
Drawdown
@40/60 (PSI)
Connector Ship Weight Price
Amtrol Well-X-Trol WX-201D, 14 Gallon Water Pressure Tank with Durabase Composite Tank Stand WX-201D 15" X 25" 14 gallons 4.3 gallons 3.8 gallons 1" NPTF 25 lbs.

MSRP $351.00

OUR PRICE $229.00

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Amtrol Well-X-Trol WX-202D, 20 Gallon Water Pressure Tank with Durabase Composite Tank Stand WX-202D 15" X 32" 20 gallons 6.2 gallons 5.4 gallons 1" NPTF 33 lbs.

MSRP $432.00

OUR PRICE $214.00

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Amtrol Well-X-Trol WX-202XLD, 26 Gallon Water Pressure Tank with Composite Tank Stand WX-202XLD 15" X 39" 26 gallons 8 gallons 7 gallons 1" NPTF 39 lbs.

MSRP $456.00

OUR PRICE $274.00

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Amtrol Well-X-Trol WX-203D, 32 Gallon, Water Pressure Tank with Durabase Composite Tank Stand WX-203D 15" X 47" 32 gallons 9.9 gallons 8.6 gallons 1" NPTF 43 lbs.

MSRP $737.00

OUR PRICE $349.00

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Amtrol Well-X-Trol WX-205D, 34 Gallon Water Pressure Tank with Durabase Composite Tank Stand WX-205D 22" X 30" 34 gallons 10.5 gallons 9.1 gallons 1 1/4" NPTF 61 lbs.

MSRP $807.00

OUR PRICE $424.00

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Amtrol Well-X-Trol WX-250D, 44 Gallon Water Pressure Tank with Durabase Composite Tank Stand WX-250D 22" X 36" 44 gallons 13.6 gallons 11.8 gallons 1 1/4" NPTF 65 lbs.

MSRP $935.00

OUR PRICE $479.00

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Amtrol Well-X-Trol WX-251D, 62 Gallon Water Pressure Tank with Durabase Composite Tank Stand WX-251D 22" x 47" 62 gallons 19.2 gallons 16.6 gallons 1 1/4" NPTF 87 lbs.

MSRP $1,105.00

OUR PRICE $644.00

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Amtrol Well-X-Trol WX-255D, 81 Gallon Water Pressure Tank with Durabase Composite tank Stand WX-255D 22" X 57" 81 gallons 25 gallons 21.7 gallons 1 1/4" NPTF 103 lbs.

MSRP $1,187.00

OUR PRICE $684.00

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Amtrol Well-X-Trol WX-302D, 86 Gallon Water Pressure Tank with Durabase Composite Tank Stand WX-302D 26" X 47" 86 gallons 26.6 gallons 23 gallons 1 1/4" NPTF 123 lbs.

MSRP $1,311.00

OUR PRICE $709.00

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Amtrol Well-X-Trol WX-350D, 119 Gallon Water Pressure Tank with Durabase Composite Tank Stand WX-350D 26" X 62" 119 gallons 36.8 gallons 31.9 gallons 1 1/4" NPTF 166 lbs.

MSRP $1,868.00

OUR PRICE $1,014.00

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Well-X-Trol Professional Stand Models

Model Tank Size Total Volume Drawdown
@30/50 (PSI)
Drawdown
@40/60 (PSI)
Connector Ship Weight Price
Amtrol Well-X-Trol WX-201, 14 Gallon Water Pressure Tank WX-201 15" X 25" 14 gallons 4.3 gallons 3.8 gallons 1" NPTF 25 lbs.

MSRP $351.00

OUR PRICE $224.00

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Amtrol Well-X-Trol WX-202, 20 Gallon Water Pressure Tank WX-202 15" X 32" 20 gallons 6.2 gallons 5.4 gallons 1" NPTF 33 lbs.

MSRP $432.00

OUR PRICE $209.00

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Amtrol Well-X-Trol WX-202XL, 26 Gallon Water Pressure Tank WX-202XL 15" X 39" 26 gallons 8 gallons 7 gallons 1" NPTF 36 lbs.

MSRP $456.00

OUR PRICE $269.00

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Amtrol Well-X-Trol WX-203, 32 Gallon Water Pressure Tank WX-203 15" X 47" 32 gallons 9.8 gallons 8.6 gallons 1" NPTF 47 lbs.

MSRP $737.00

OUR PRICE $344.00

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Amtrol Well-X-Trol WX-205, 34 Gallon Water Pressure Tank WX-205 22" X 30" 34 gallons 10.5 gallons 9.1 gallons 1 1/4" NPTF 61 lbs.

MSRP $807.00

OUR PRICE $419.00

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Amtrol Well-X-Trol WX-250, 44 Gallon Water Pressure Tank WX-250 22" X 36" 44 gallons 13.6 gallons 11.8 gallons 1 1/4" NPTF 65 lbs.

MSRP $935.00

OUR PRICE $464.00

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Amtrol Well-X-Trol WX-251, 62 Gallon Water Pressure Tank WX-251 22" X 47" 62 gallons 19.2 gallons 16.6 gallons 1 1/4" NPTF 87 lbs.

MSRP $1,105.00

OUR PRICE $629.00

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Amtrol Well-X-Trol WX-255, 81 Gallon Water Pressure Tank WX-255 22" X 57" 81 gallons 25 gallons 21.7 gallons 1 1/4" NPTF 103 lbs.

MSRP $1,087.00

OUR PRICE $669.00

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Amtrol Well-X-Trol WX-302, 86 Gallon Water Pressure Tank WX-302 26" X 47" 86 gallons 26.6 gallons 23 gallons 1 1/4" NPTF 123 lbs.

MSRP $1,311.00

OUR PRICE $694.00

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Amtrol Well-X-Trol WX-350, 119 Gallon Water Pressure Tank WX-350 26" X 62" 119 gallons 36.8 gallons 31.9 gallons 1 1/4" NPTF 166 lbs.

MSRP $1,868.00

OUR PRICE $999.00

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Well-X-Trol Professional Stand Models with Tank Tee Combos

Model Tank Size Total Volume Drawdown
@30/50 (PSI)
Drawdown
@40/60 (PSI)
Connector Ship Weight Price
Amtrol Well-X-Trol WX-202 , 20 Gallon Water Pressure Tank with complete Stainless Steel Tank Tee Package WX-202-SS-T1 15 3/8" X 31 5/8" 20 gallons 6.2 gallons 5.4 gallons 1" NPTF 40 lbs.
OUR PRICE $339.00

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No Tax

Amtrol Well-X-Trol WX-203, 32 Gallon Water Pressure Tank with complete Stainless Steel Tank Tee Package WX-203-SS-T1 15" X 47" 32 gallons 9.9 gallons 8.6 gallons 1" NPTF 50 lbs.
OUR PRICE $469.00

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Amtrol Well-X-Trol WX-203, 32 Gallon Water Pressure Tank with complete No Lead Brass Tank Tee Package WX-203-NLB-T1 15" X 47" 32 gallons 9.9 gallons 8.6 gallons 1" NPTF 50 lbs.
OUR PRICE $429.00

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Amtrol Well-X-Trol WX-250, 44 Gallon, Water Pressure Tank with Complete Stainless Steel Tank Tee Package WX-250-SS-T2 22" X 36" 44 gallons 13.6 gallons 11.8 gallons 1 1/4" NPTF 79 lbs.
OUR PRICE $599.00

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Durabase Tank Spacer for Steel Tanks

Model Tank Size Total Volume Drawdown
@30/50 (PSI)
Drawdown
@40/60 (PSI)
Connector Ship Weight Price
DuraBase Tank Spacer for 15" Steel Stand Models DURABASE-15 gallons gallons gallons lbs.
OUR PRICE $26.00
DuraBase Tank Spacer for 22" Steel Stand Models DURABASE-22 gallons gallons gallons lbs.
OUR PRICE $34.00

Well-X-Trol Professional Underground Models

Model Tank Size Total Volume Drawdown
@30/50 (PSI)
Drawdown
@40/60 (PSI)
Connector Ship Weight Price
Amtrol Well-X-Trol 20 Gallon Underground Pressure Tank - WX-202-UG WX-202-UG 16" X 30" 20 gallons 6.8 gallons 5.9 gallons 1" NPTF 30 lbs.

MSRP $643.00

OUR PRICE $360.00

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Amtrol Well-X-Trol 44 Gallon Underground Pressure Tank - WX-250-UG WX-250-UG 22" X 34" 44 gallons 15 gallons 13 gallons 1 1/4" NPTF 63 lbs.

MSRP $1,248.00

OUR PRICE $689.00

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Well-X-Trol Commercial/Municipal Models

Model Tank Size Total Volume Drawdown
@30/50 (PSI)
Drawdown
@40/60 (PSI)
Connector Ship Weight Price
Amtrol Well-X-Trol WX-403 WX-403 16" X 49" 34 gallons gallons gallons 1" NPTF 120 lbs.

MSRP $2,938.00

OUR PRICE $1,498.00

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Amtrol Well-X-Trol WX-403 WX-405 24" X 59" 90 gallons gallons gallons 1" NPTF 232 lbs.

MSRP $3,873.00

OUR PRICE $1,975.00

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Amtrol Well-X-Trol 132 Gallon Commercial Pressure Tank - WX-450 WX-450 24" X 87" 132 gallons gallons gallons 1" NPTF 392 lbs.

MSRP $8,000.00

OUR PRICE $4,080.00

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Amtrol Well-X-Trol 158 Gallon Commercial Pressure Tank - WX-451 WX-451 30" X 73" 158 gallons gallons gallons 1" NPTF 587 lbs.

MSRP $9,770.00

OUR PRICE $4,983.00

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Male Tank Tee Installation Packages

Male Tank Tee Illustration

1" Male Tank Tee / 1" Incoming Water Line

Fits: Amtrol WX-201, WX-202, WX-202XL, WX-203 Goulds V60, V80, V100

Model Price
Stainless Steel Installation Tee Package For Well X Trol WX-201, 202, 202XL, 203 and Goulds v60, v80, v100 SS-T1-M Lead Free
OUR PRICE $149.00

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No-Lead Brass Installation Tank Tee Package For Well X Trol WX-201, 202, 202XL, 203 and Goulds v60, v80, v100 NL-BRASS-T1-M Lead Free
OUR PRICE $109.00

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1.25" Male Tank Tee / 1" Incoming Water Line

Fits: Amtrol WX-205, 250, 251, 255, 302, 350 Goulds V140, V200, V250, V260, V350

Model Price
Stainless Steel Installation Tee Package For Well X Trol WX-205, 250, 251, 252, 255, 302, 350 and Goulds v100S, v140, v200, v250, v260, v350 - 1" Incoming Water Line SS-T2-M Lead Free
OUR PRICE $159.00

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No-Lead Brass Installation Tee Package For Well X Trol WX-205, 250, 251, 252, 255, 302, 350 and Goulds v100S, v140, v200, v250, v260, v350 - 1" Incoming Water Line NL-BRASS-T2-M Lead Free
OUR PRICE $129.00

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1.25" Male Tank Tee / 1.25" Incoming Water Line

Fits: Amtrol WX-205, 250, 251, 255, 302, 350 Goulds V140, V200, V250, V260, V350

Model Price
Stainless Steel Installation Tee Package For Well X Trol WX-205, 250, 251, 252, 255, 302, 350 and Goulds v100S, v140, v200, v250, v260, v350 - 1 1/4" Incoming Water Line SS-T2-1.25-M Lead Free
OUR PRICE $199.00

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No-Lead Brass Installation Tee Package For Well X Trol WX-205, 250, 251, 252, 255, 302, 350 and Goulds v100S, v140, v200, v250, v260, v350 - 1 1/4" Incoming Water Line NL-BRASS-T2-1.25-M Lead Free
OUR PRICE $149.00

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