| Model | 98142 · ASIN B0DBRT53R7 |
| Capacity | 40 US gallons (~151 L) |
| Filled weight | ~335 lbs (40 gal × 8.34 lb/gal) |
| Dimensions | 35.44″ L × 35.44″ W × 22.63″ H |
| Material | UV-stabilized chemical-resistant polyethylene — translucent |
| Fill opening | 6-inch wide cap (top-mounted) |
| Drain port | 2-inch port · 3/4-inch garden hose adapter · tethered cap |
| Seals | Nitrile (NBR) — water and chemical resistant |
| Made in | USA — Chapin International, Batavia NY; plants in KY and OH |
| Warranty | 1-year limited — Chapin International |
| Retail price | ~$80–$120 depending on retailer and promotion |
| Support | 1-800-444-3140 · Mon–Fri 8 AM–5 PM EST |
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What the Chapin 98142 Is
The Chapin 98142 is a 40-gallon portable utility water tank built by Chapin International — a Batavia, NY company manufacturing in Kentucky and Ohio. It's designed to ride in a truck bed, on a trailer, or on a tractor platform, giving you 40 gallons of water on-site wherever the work is. It's also designed to be convertible to a spot sprayer with a 12V pump, wand, hose, and shut-off — Chapin sells a compatible pump bundle (ASIN B0F39M91QX).
The tank's translucent poly wall lets you see the water level at a glance without opening the cap or tapping the side. The UV inhibitor blended into the resin slows the photo-degradation that would otherwise make untreated poly brittle outdoors. The nitrile seals are chemical-resistant — the tank handles dilute fertilizers, herbicide mixes, and agricultural chemicals, not just plain water.
One thing it does not do: potable water. The 98142 is a utility tank, not NSF-61 certified. Use it for irrigation, fire suppression, livestock watering, and sprayer applications. Not for drinking.
Known Issues — Read Before You Buy
This review documents the documented failure modes from multiple verified purchasers. The tank body itself is reliable. The issue is the factory drain fitting, and it's consistent enough that you should address it proactively before first use rather than react to it later.
The 2-inch drain port at the base of the tank includes a plastic 3/4-inch garden hose adapter that users report is under-engineered relative to the mechanical stress of attaching and removing a garden hose. Multiple verified purchasers describe cracking, stripping, and outright shearing — one documented shearing on the very first use.
"The plastic fittings for the drain outlet are really cheap and inadequate... the 3/4" hose fitting is poorly designed and too weak to attach a hose to. Mine sheared off the first time I used it!"
— Verified Amazon Purchaser
"The weak link is the garden hose adapter which is not stout enough where the garden hose attaches to withstand normal use without slowly weakening and cracking where the hose connects. Chapin doesn't sell replacements anywhere on the web."
— Verified Amazon Purchaser (UTV mount user)
The curved side walls have no molded tie-down channels, strap recesses, or anchor loops. Ratchet straps migrate upward on the curved walls during transport, which can allow a full 335-lb tank to shift or tip. This is a design limitation, not a failure — but it requires a compensating plan.
Setup and First Use
The 98142 arrives ready to use — no assembly. But the Chapin manual specifies several first-use steps that, when skipped, are the most common source of early frustration.
| Step | What to Do | Why It Matters |
|---|---|---|
| 1. Inspect fill cap seal | Confirm the nitrile seal is seated evenly around the full circumference — not twisted or pinched | A misseated seal on a 40-gallon tank in a moving truck bed will leak or blow off |
| 2. Inspect drain fitting | Check for any cracks, stress marks, or mold defects at the base — address before filling | This is the documented failure point; early detection prevents 335-lb problem |
| 3. Apply PTFE tape | Wrap 3–4 layers clockwise on the 3/4" drain threads before any hose attachment | Creates a watertight seal without relying on thread engagement; reduces failure risk |
| 4. Rinse interior | Add 2–3 gal clean water, swirl, drain completely | Removes manufacturing residue from the tank interior |
| 5. Fill carefully | Monitor through translucent wall; leave a small air gap at top; don't overfill | Thermal expansion in summer can build pressure behind a fully sealed cap |
| 6. Pre-transport check | Tighten fill cap fully; hand-tighten drain cap; tip tank slightly in each direction and look for seepage | Both caps must be secure before moving — the fill cap especially is the highest-pressure failure point during braking |
Real-World Use Cases
| Use Case | How It Works | Notes |
|---|---|---|
| Brush pile / burn pile suppression | Tank in truck bed or UTV; gravity drain or battery pump delivers water on demand | "Beats having to use 5-gallon buckets" — Amazon reviewer. Add a 12V transfer pump for on-demand flow without gravity limitation. |
| UTV / ATV mobile watering | Mounted in UTV bed rack; gravity drain or 12V pump serves spray wand or drip hose while moving | "We have this mounted on a UTV bed rack for mobile watering duties. It does the job well." — Amazon reviewer |
| Spot sprayer conversion | Add Chapin 6-9206 12V pump, wand, hose, shut-off valve | Chapin sells the tank + pump bundle as ASIN B0F39M91QX. ~$45–$65 in additional components. |
| Chemical application | Dilute herbicide, fertilizer, or pest control solutions — not concentrated acids or strong solvents | Confirm chemical compatibility with Chapin chart; triple-rinse between chemical and water use |
| Livestock watering | Transport water to remote pastures; gravity drain into stock tanks | Cost-effective alternative to permanent water line runs to temporary paddocks |
| Irrigation transport | Fill at a water source; transport to orchard or remote garden; gravity or pump distribution | Good gravity flow from elevated truck bed; add pump for ground-level situations |
| Equipment washing | Transport water to job sites without a hose bib | Good gravity rinse pressure; add 12V pump for cleaning tasks requiring spray pressure |
| Emergency utility reserve | Store water for washing and sanitation during power outages or well pump failure | NOT rated for drinking water — utility and sanitation use only |
Spot Sprayer Conversion
Chapin explicitly designed this tank for sprayer conversion. The compatible pump is the Chapin 6-9206 — a 12V, 1.0 GPM diaphragm pump that is self-priming, run-dry safe, and has chemical-resistant elastomer seals. Chapin sells the tank and pump as a bundle (ASIN B0F39M91QX).
| Component | Spec | Approx. Cost |
|---|---|---|
| 12V diaphragm pump | Chapin 6-9206 — 1.0 GPM, self-priming, run-dry safe, chemical-resistant seals | $45–$65 |
| Spray wand with shut-off | 24″–48″ agricultural wand; trigger shut-off handle | $15–$35 |
| Pressure hose | 3/8″ or 1/2″ ID rated for pump pressure (40–60 PSI) | $10–$25 |
| 12V wiring and switch | 10 AWG harness with 10A inline fuse; on/off switch | $10–$20 |
| Mounting bracket | Included with Chapin 6-9206 | Included |
Recommended Upgrades
| Upgrade | Purpose | Cost |
|---|---|---|
| Stainless or brass bulkhead fitting | Permanent metal replacement for the factory plastic 3/4" drain adapter — will never crack or shear | $8–$20 |
| PTFE thread tape | Apply to drain threads before first hose attachment — watertight seal at hand-tight torque | $2–$5 |
| Inline brass ball valve | Positive shut-off at drain port; more reliable than relying on the hose or cap alone | $8–$18 |
| Non-slip truck bed mat | Prevents tank sliding; reduces vibration at the drain fitting during transport | $15–$30 |
| Wooden or angle iron cradle | Positive mechanical stop in truck bed or UTV rack — eliminates strap migration | $10–$40 materials |
| Battery-operated transfer pump | On-demand flow without 12V wiring; submersible type draws from inside via the 6" fill opening | $20–$50 |
Chapin Series and Alternatives
Chapin Tank Series
| Model | Capacity | Full Weight | Best For | Price (Est.) |
|---|---|---|---|---|
| 15-Gallon | 15 gal | ~130 lbs | Small gardens, hand carry, lighter-duty ATV | $45–$65 |
| 25-Gallon | 25 gal | ~215 lbs | Mid-size gardens, ATV/UTV, most light ag tasks | $60–$85 |
| 40-Gallon (98142) | 40 gal | ~335 lbs | Full-size truck, tractor, larger jobs, fire suppression | $80–$120 |
vs. Alternatives at 40 Gallons
| Option | Capacity | Portability | Sprayer-Ready | Made in USA | Price |
|---|---|---|---|---|---|
| Chapin 98142 | 40 gal | Truck/tractor/trailer | Yes — designed for it | Yes | $80–$120 |
| IBC tote (275 gal) | 275 gal | Forklift required full | Possible but complex | No (typically) | $40–$80 used |
| 8 × 5-gal buckets | 40 gal | 8 separate trips | Not practical | N/A | $40–$80 |
| Bladder tank (40 gal) | 40 gal | Good — rolls up empty | Some models | Varies | $60–$150 |
Maintenance Schedule
| Task | Frequency | How |
|---|---|---|
| Interior rinse | After every use or liquid type change | 2–3 gal clean water; swirl; drain through drain port |
| Post-chemical triple rinse | After any chemical application use | Three complete fills of clean water, each drained fully |
| Cap and seal inspection | Before every fill | Check both caps; squeeze nitrile seals for brittleness or cracking |
| Drain fitting inspection | Every 2–4 uses or monthly | Look for stress cracks, thread deformation; gently test by hand-threading a coupling |
| Interior cleaning | Every 3–6 months | 1 oz unscented bleach per gallon of water; slosh; let sit 15 min; drain; double rinse |
| Seasonal storage prep | Before any 2+ week storage | Drain completely; open fill cap; air dry thoroughly; store caps loosely placed (not torqued) |
Water and wastewater treatment professional with 18+ years of hands-on experience. Grade IV Wastewater Certification holder. Founded TankAuthority to bring real operator knowledge to water storage decisions.