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.
- Verified
- Updated
- 6 min read
- 8 sources
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OwnerSpec compares published manufacturer specifications, certification listings and sourced technical documents. Unless a page explicitly states otherwise, OwnerSpec has not laboratory-tested or used the products it compares. Editorial policy
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.
The picks
The 20-gallon slot, with the longest published warranty
Amtrol Well-X-Trol WX-202
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
A step up in gallons without changing the 1 in thread
Amtrol Well-X-Trol WX-203
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
20 gallons where a 1 in FNPT elbow suits the piping
Red Lion RL20A
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
The one spec sheet naming a certifier and a standard
Goulds HydroPro V60 (dealer-direct)
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
Reads the pre-charge before the tank goes in
JACO Elite tire pressure gauge, 0-60 PSI
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
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 lists what to order.
What differs between two tanks with the same gallon label?
Three things, in the order they cost money.
- Drawdown. Flexcon publishes 5.9 gallons at 40/60 against Amtrol’s 5.4 on the same nominal 20 gallons.
- 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.
- 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 covers what to put ahead of it, and the whole-house filter flow rate calculator sizes that filter against the same pump.
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.
Fact sheet and how to cite this page
- 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) (manufacturer or vendor document)
- Facts verified
- Last updated
- Cite as
- 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.
Every figure above also appears, with its source, in the article. All sources ยท How OwnerSpec verifies numbers
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 (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 (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 (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 (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 (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 (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 (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 (manufacturer or vendor document)