# Well Pressure Tank Cross-Reference: WX-202, HT-20B, V60, WR 60 and RL20A by Capacity Class

> Amtrol WX-202, Water Worker HT-20B, Goulds V60, Flexcon WR 60 and Red Lion RL20A share the 20-gallon, 1 in slot. Drawdown at 40/60 psi: 5.3 to 5.9 gal.

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| Source | https://ownerspec.com/water/parts/well-pressure-tank-cross-reference/ |
| Publisher | OwnerSpec (https://ownerspec.com/) |
| Published | 2026-09-21 |
| Updated | 2026-09-21 |
| Facts verified | 2026-09-21 |
| Disclosure | Contains affiliate links. OwnerSpec may earn a commission at no cost to the reader. |

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## Short answer

A well pressure tank is replaced by capacity class, not by brand. The Amtrol Well-X-Trol
WX-202, Water Worker HT-20B, Goulds HydroPro V60, Flexcon Well-Rite WR 60 and Red Lion RL20A
all sit in the 20-gallon, 1 in connection slot, and Water Worker's own cross-reference chart
lists them in a single row. Published drawdown at 40/60 psi still varies across that row:
Goulds prints 5.3 gallons on a 19.9 gallon shell, Water Worker 5.35, Amtrol 5.4 and Flexcon
5.9. The 32-gallon slot is the WX-203, the HT-32B and the Goulds V100, still on 1 in NPTF;
Amtrol's spec card moves to 1 1/4 in NPTF at the WX-205 and above. Match the connection size
and the drawdown figure, then set the air charge: the Amtrol, Sta-Rite and Red Lion manuals
all say 2 psi below the pump cut-in setting, tank drained, which is 38 psi on a 40/60 switch.

## Fact sheet

- **Answer:** The 20-gallon residential slot is the Amtrol WX-202, Water Worker HT-20B, Goulds V60, Flexcon Well-Rite WR 60 and Red Lion RL20A, all on a 1 in connection. Published drawdown at 40/60 psi runs 5.3 to 5.9 gallons across that row. Amtrol, Sta-Rite and Red Lion all specify a pre-charge 2 psi below pump cut-in, with the tank drained.
- **Applies to:** WX-202; HT-20B; V60
- **Compatibility basis:** Amtrol spec card MC7025 (03/24), Water Worker Well Tank Selection Guide, Goulds Water Technology technical brochure BHYDRO R7, Flexcon Well-Rite submittal data, Pentair Pro-Source data sheet M9134WS, Red Lion pre-charged pressure tank page
- **Assumptions:** Cross-fit here means same capacity class, same nominal connection size and a published drawdown figure, not an interchangeable part number. Cabinet height, base diameter and thread gender still have to be checked against the space and the tank tee.; Water Worker's selection guide prints no maximum working pressure or warranty term, so those cells say not published rather than carrying a figure from a listing.; The Water Worker HT-32B cell at 20/40 psi is printed as a dash in the maker's own guide, not as a number.
- **Method:** Each row was taken from the maker's own spec sheet or brochure, opened this session. The equivalence column comes from Water Worker's published cross-reference chart, which lists competing model numbers against its own by capacity class. Pre-charge wording was read from the Amtrol, Sta-Rite and Red Lion documents rather than paraphrased.
- **Primary source:** [Amtrol, Well-X-Trol Next Generation Well Tanks spec card MC7025 (03/24)](https://www.amtrol.com/wp-content/uploads/2024/02/MC7025-03_24-WXT-card.pdf) (manufacturer or vendor document)
- **Facts verified:** 2026-09-21
- **Last updated:** 2026-09-21
- **Canonical URL (cite this):** https://ownerspec.com/water/parts/well-pressure-tank-cross-reference/

The spec people match is the gallon number on the label, and that is the one number that does not decide how much water the tank gives back.

## Which tank replaces the one you have?

Water Worker publishes a cross-reference chart that lines competing model numbers up against its own by capacity class. These are the two rows most residential wells sit in.

| Capacity class | Water Worker | Amtrol Well-X-Trol | Goulds HydroPro | Flexcon Well-Rite | Red Lion | Pentair Pro-Source | WellMate |
|---|---|---|---|---|---|---|---|
| 20-24 gal | HT-20B | WX-202 | V60 | WR 60 | RL20 | PS42 / PSP19 | WM-6 |
| 30-36 gal | HT-32B | WX-203 | V100 | WR 120 | RL33 | PS82 / PSP32 / PSP35 | WM-9 |
| 14-16 gal | HT-14B | WX-201 | V45 | WR 45 | RL14 | PS30 | WM-4 |
| 37-46 gal | HT-44B | WX-250 | V140 | WR 140 | RL44 | PS120 | WM-14 |

That chart is a sizing equivalence, not a parts interchange. Two tanks in one row can differ in height, base diameter and thread gender, so measure the space and check the tank tee before ordering.

## What do the makers publish for each tank?

Every figure below is from the maker's own spec sheet or brochure. Where a maker does not print a figure, the cell says so.

| Model | Volume (gal) | Drawdown 20/40 | 30/50 | 40/60 | Connection | Max working pressure | Certification printed |
|---|---|---|---|---|---|---|---|
| Amtrol WX-202 | 20.0 | not published | 6.2 | 5.4 | 1 in NPTF | 150 psig | none on the card |
| Water Worker HT-20B | 20.0 | 7.31 | 6.18 | 5.35 | 1 in NPTF | not published in the guide | none in the guide |
| Goulds V60 | 19.9 | 7.3 | 6.1 | 5.3 | 1 in NPTF | 125 psi | NSF Certified to NSF/ANSI 61-G |
| Flexcon WR 60 | 20 | 8.1 | 6.8 | 5.9 | 1 in | 125 PSI | none on the submittal |
| Red Lion RL20A | 20 | not published | 7.2 | not published | 1 in FNPT elbow | not published on the page | NSF/ANSI/CAN 61 and 372 approved |
| Pentair PS19T-T02 | 19 | 6.9 | 5.8 | 5.0 | 1 in NPT | 100 PSI | none on the data sheet |
| Amtrol WX-203 | 32.0 | not published | 9.9 | 8.6 | 1 in NPTF | 150 psig | none on the card |
| Water Worker HT-32B | 32.0 | printed as a dash | 9.89 | 8.57 | 1 in NPTF | not published in the guide | none in the guide |
| Goulds V100 | 31.8 | 11.8 | 9.9 | 8.6 | 1 in NPTF | 125 psi | NSF Certified to NSF/ANSI 61-G |

Drawdown is the water the tank delivers between the pump cutting in and cutting out, and it is what the reader is actually buying.

## What pre-charge does the new tank need?

Set the air charge 2 psi below the pump cut-in setting, with the tank drained and the system at zero pressure. Amtrol's manual, Sta-Rite's S490 and Red Lion's page all print that rule independently.

| Pressure switch | Pre-charge | Where it is printed |
|---|---|---|
| 20-40 | 18 PSI | Sta-Rite S490 chart |
| 30-50 | 28 PSI | Sta-Rite S490 chart; Red Lion's worked example |
| 40-60 | 38 psig | Amtrol 9016-868 worked example |

Amtrol ships every Well-X-Trol at 38 psig, Goulds and Flexcon at 38 PSI, and Pentair's Pro-Source steel line at 40 PSI. A tank that leaves the box on a 40/60 system may need no adjustment; on a 30/50 system it needs air let out. Amtrol's manual says adjustments are made only with the tank empty of water and the system off.

**Do not order on the gallon number alone**

The gallon figure on the label is the shell, not the delivery. A WX-202 and a Flexcon WR 60 are both called 20 gallons, and their makers publish 5.4 and 5.9 gallons of drawdown at 40/60: a 9% difference that the label hides. Before you order, read the cut-in and cut-out off the pressure switch, then read the existing tank's air charge with a 0-60 psi gauge on the Schrader valve with the tank drained. If the old tank held no charge at all, a new tank alone may not be the fix: a waterlogged tank and a pump that short-cycles look identical at the tap. Well chemistry is a separate question, and the [well water test panel guide](/water/guides/well-water-test-panel/) lists what to order.

## What differs between two tanks with the same gallon label?

Three things, in the order they cost money.

1. Drawdown. Flexcon publishes 5.9 gallons at 40/60 against Amtrol's 5.4 on the same nominal 20 gallons.
2. Pressure headroom. Amtrol rates the Well-X-Trol at 150 psig, Goulds and Flexcon at 125, Pentair's Pro-Source steel line at 100 PSI.
3. What is inside. Amtrol, Water Worker, Goulds and Flexcon build a diaphragm or bladder tank; Pentair's Pro-Source steel line uses a one-piece seamless PVC water cell with a nitrogen-rich pre-charge, which Pentair says slows air permeation three to four times over straight air.

Pentair also prints a sizing rule the other makers do not: one gallon of drawdown for each gallon per minute at pump capacity. On a 10 gpm pump that points at the 32-gallon class, not the 20.

Sediment is what shortens a tank's life once it is in: the [sediment and turbidity guide](/water/guides/sediment-turbidity-well-water/) covers what to put ahead of it, and the [whole-house filter flow rate calculator](/water/calculators/whole-house-filter-flow-rate-calculator/) sizes that filter against the same pump.

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## The picks

- **Amtrol Well-X-Trol WX-202**: The 20-gallon slot, with the longest published warranty (20.0 gal volume; drawdown 6.2 / 5.4 / 4.7 gal at 30/50, 40/60, 50/70 psig; 1 in NPTF; 15 x 32 in; 150 psig max; 38 psig factory pre-charge; 7-year limited warranty) Amazon: https://www.amazon.com/dp/B002WDODS8/?tag=ownerspec-20
- **Amtrol Well-X-Trol WX-203**: A step up in gallons without changing the 1 in thread (32.0 gal volume; drawdown 9.9 / 8.6 / 7.6 gal at 30/50, 40/60, 50/70 psig; 1 in NPTF; 15 x 47 in; 150 psig max; ships with the DuraBase stand) Amazon: https://www.amazon.com/dp/B08BZTFVZ9/?tag=ownerspec-20
- **Red Lion RL20A**: 20 gallons where a 1 in FNPT elbow suits the piping (20 gal; 7.2 gal drawdown at 30/50 psi; 1 in FNPT elbow connection; page states NSF/ANSI/CAN 61 and NSF/ANSI/CAN 372 approved; 5 year warranty badge) Amazon: https://www.amazon.com/dp/B0DCPW7BGG/?tag=ownerspec-20
- **Goulds HydroPro V60 (dealer-direct)**: The one spec sheet naming a certifier and a standard (19.9 gal; drawdown 7.3 / 6.1 / 5.3 gal at 20/40, 30/50, 40/60 psig; 1 in NPTF; 15 3/8 x 32 3/8 in; 38 PSI pre-charge; 125 psi max; NSF Certified to NSF/ANSI 61-G)
- **JACO Elite tire pressure gauge, 0-60 PSI**: Reads the pre-charge before the tank goes in (0-60 psi range, which covers the 18, 28 and 38 psi settings the Sta-Rite and Amtrol charts call for on 20-40, 30-50 and 40-60 switches) Amazon: https://www.amazon.com/dp/B010A6B6KG/?tag=ownerspec-20

## Frequently asked questions

### Is the Water Worker HT-20B the same tank as an Amtrol WX-202?

They occupy the same slot, not the same part number. Water Worker's own cross-reference chart lists the HT-20B against the WX-202, and both are 20.0 gallons on a 1 in connection. The published drawdown at 40/60 psi differs slightly: Amtrol prints 5.4 gallons and Water Worker 5.35 gallons for the same nominal size.

### What pre-charge should a replacement well tank be set to?

Amtrol's Well-X-Trol manual says to set the pre-charge 2 psig below the pressure switch pump cut-in setting. Sta-Rite's Pro-Source manual S490 prints the same rule with a worked chart: 18 PSI for a 20-40 switch, 28 PSI for 30-50. Red Lion repeats it. All three require the tank drained and the system at zero pressure.

### Why do two 20-gallon tanks give different amounts of water?

Drawdown is the water the tank actually delivers between pump cut-in and cut-out, and it depends on the acceptance factor of the diaphragm or bag as much as on shell volume. At 40/60 psi the published figures run 5.3 gallons for the Goulds V60, 5.35 for the HT-20B, 5.4 for the WX-202 and 5.9 for the Flexcon WR 60.

### When does the connection size change from 1 in to 1 1/4 in?

Amtrol's spec card puts the break at the WX-205: models WX-201 through WX-203 are 1 in NPTF, and WX-205 at 34.0 gallons through WX-350 at 119.0 gallons are 1 1/4 in NPTF. Water Worker breaks at the same point, 1 in through the HT-32B and 1 1/4 in from the HT-44B up. Goulds stays 1 in NPTF through the V100S.

### Which of these makers publishes an NSF certification?

Of the documents opened here, only Goulds names a certifier and a standard together: its BHYDRO R7 brochure prints NSF Certified to NSF/ANSI 61-G. Red Lion's page states NSF/ANSI/CAN 61 and NSF/ANSI/CAN 372 approved without naming the certifying body. The Amtrol spec card and the Flexcon Well-Rite submittal print no certification claim at all.


## Sources

- [Amtrol, Well-X-Trol Next Generation Well Tanks spec card MC7025 (03/24): model table, tank volume, drawdown at 30/50, 40/60 and 50/70 psig, system connection, 150 psig max working pressure, 38 psig factory pre-charge](https://www.amtrol.com/wp-content/uploads/2024/02/MC7025-03_24-WXT-card.pdf) (manufacturer or vendor document)
- [Amtrol, Well-X-Trol Installation & Operation Instructions 9016-868 MC10185: set the pre-charge 2 psig below the pressure switch pump cut-in setting](https://www.amtrol.com/wp-content/uploads/2019/03/9016-868-MC10185-01_19-WXT-IO-manual.pdf) (manufacturer or vendor document)
- [Water Worker Well Tank Selection Guide: maker cross-reference chart by capacity class and the HT-series drawdown table at 20/40, 30/50 and 40/60](https://images.thdstatic.com/catalog/pdfImages/b8/b8725316-f553-4e8f-9a1d-a971007f655b.pdf) (retailer listing or retailer-hosted document)
- [Goulds Water Technology, HYDRO-PRO Water System Tank technical brochure BHYDRO R7: V45 to V350 volume, drawdown, pre-charge 38 PSI, 125 psi max, NSF Certified to NSF/ANSI 61-G](https://www.xylem.com/siteassets/brand/goulds-water-technology/resources/technical-brochure/bhydro.pdf) (manufacturer or vendor document)
- [Flexcon Industries, Well-Rite Series submittal data: WR 45 to WR 360 volume, drawdown, connection, 125 PSI max working pressure, 140 F max, 38 PSI adjustable pre-charge](https://flexconind.com/wp-content/uploads/2021/09/WellRite-Spec-Sheet-LR.pdf) (manufacturer or vendor document)
- [Pentair, PRO-SOURCE Steel Pressurized Tanks data sheet M9134WS (09-15-2021): PS19T-T02 figures, 40 PSI nitrogen-rich pre-charge, 100 PSI max operating pressure, one gallon of drawdown per gallon per minute sizing rule](https://www.pentair.com/content/dam/extranet/web/nam/pro-source/data-sheets/m9134ws-steel-tanks-ds.pdf) (manufacturer or vendor document)
- [Sta-Rite, Pro-Source Steel Pressure Tanks Owner's Manual S490: reduce pre-charge to 2 PSI below pump cut-in, 28 PSI for a 30-50 switch and 18 PSI for a 20-40 switch, 5 year warranty on Pro-Source steel tanks](https://www.pentair.com/content/dam/extranet/web/nam/sta-rite/manuals/s490-prosource-steel-pressure-tank-iom.pdf) (manufacturer or vendor document)
- [Red Lion, Pre-Charged Pressure Tanks: RL-A model list, RL20A at 20 gallons and 7.2 gallons drawdown at 30/50, 1 in FNPT elbow, NSF/ANSI/CAN 61 and 372 wording, 5 year warranty badge](https://redlionproducts.com/cleanwater/pre-charged-pressure-tanks/) (manufacturer or vendor document)

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Citation: OwnerSpec, "Well Pressure Tank Cross-Reference: WX-202, HT-20B, V60, WR 60 and RL20A by Capacity Class", https://ownerspec.com/water/parts/well-pressure-tank-cross-reference/, facts verified 21 September 2026.
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