PW Series water jacketed tanks
100% Fully Welded.
304 stainless steel with a #4 polish and a stainless lid. No caulk. No glue. No compromise.
That's what you're paying for. Every WaxMelters water jacketed tank is 100% fully welded 304 stainless with a #4 polish and a stainless lid, with no aluminum, caulk or glue anywhere. It's built for years of service and protects your batches and your production schedule over the life of the tank. PW Series tanks from 75 to 1,000 lb, built in the USA.
- US-built in Ronkonkoma, NY
- BBB A+ rated
- 1-year electrical, 3-year metal parts warranty
- Trusted by NASA and Fortune 500s
Why fully welded matters
- No LeaksWelded seams, no glue or caulk to fail
- SanitarySmooth 304 stainless with a #4 polish
- DurableFully welded construction built for production
- Easy CleaningNo seams for material to collect in
Trusted by
Reviews
- ★★★★★
We purchased our PRIMO Melter and EZ system from Melting & Filling Equipment for our ointment and...
Rowena, Herbs From Wales, UNITED KINGDOMRead more - ★★★★★
We love the PRIMO 1000 & PRIMO 2000 we ordered. They are definitely speeding up our wax melt...
Tyson K., Candle Warmers Etc.Read more - ★★★★★
I just wanted to take a moment to thank all of you- you are truly a pleasure to do business with....
Shannon D., Pure Light Candle CompanyRead more - ★★★★★
We were so pleased with our melting tank that we ordered another melter the same exact day. It...
Jim, J.C. Danczak, Inc., Westfield, MassachusettsRead more You guys keep making awesome products :) THANK YOU!
Brett H., Goldilocks WrapsRead moreWe bought [our second] melter from you… and I love this smaller one!!
Maureen G., LUC JACOBSRead moreThey [PRIMO Melters] are great Melters!
Howard G., Our Own Candle CompanyRead moreThe new units...they are functioning excellent!
Jon S., Holland Group, LLCRead moreI appreciate your kind help regarding the pieces that I just purchased.
Luis O., Velas MaryRead moreThat is EXCELLENT customer service! THANK YOU!!!
Diego B., Cosmetix WestRead moreThanks John and team for this equipment, it looks great!
Ben, Hoot Ventures Pty Ltd; Milkman Grooming CompanyRead moreHello John! I'm loving my melter.
Latay W., Posh Candle CompanyRead more
Compare with PRIMO: see the PRIMO alternativesWaterless PRIMO melters in the same size classes, with no water jacket to fill or maintain.
Help me chooseCompare modelsFind my machineBuild your system
Explore in 3D
Real photos shown; tap View in 3D to rotate any model. 3D illustrations, not exact models. See every model in the 3D showroom
Why Fully Welded Is Worth It
Our water jacketed tanks are priced for what you get: 100% fully welded 304 stainless steel with a #4 polish and no glued or caulked seams. Better construction, best performance: the best water jacketed tanks you can buy, backed by the WaxMelters guarantee of the best performance and the highest-quality construction.
- Fully welded 304 stainless steelNo glued or caulked seams. Welded construction means no leaks, sanitary surfaces and easy cleaning.
- Durable #4 finishA clean, durable polished surface on an industrial grade vessel.
- Heavy-duty industrial fabricationBuilt in the USA for wax melting, heated holding and compatible process applications.
- Stainless steel lidsStainless steel lids, never plastic.
- Gentle, even indirect heatWater in the jacket spreads heat across the vessel wall, so material warms gently from the sides instead of by a hot element.
What to Ask Before You Buy a Water Jacketed Tank
- Is it 100% fully welded, every seam? (TIG welding alone is not full welding.) Or is any of it glued or caulked?
- Is it 304 stainless steel with a #4 polish?
- Is the lid stainless steel or plastic?
WaxMelters PW Series: 100% fully welded, every seam, 304 stainless steel with a #4 polish, stainless steel lids, never plastic.
WaxMelters guarantees the best performance and the highest-quality construction. WaxMelters is the industry leader and the leading USA manufacturer of melting, heating and filling equipment since 1999, for every business size and every industry. We're proud to hold an A+ rating with the Better Business Bureau. WaxMelters customers include candle makers, soap makers, creameries, beekeepers and Fortune 500 manufacturers.
Indirect Heating: Stainless Steel Construction
WaxMelters manufactures professional water-jacketed melting tanks for customers who specifically require indirect, water-jacketed heating. Our PW Series combines fully welded stainless steel construction, a durable #4 finish and heavy-duty industrial fabrication for wax melting, heated holding and compatible process applications. The PW Series uses the same construction, sized in gallons for soap oils, fats, butters and soap bases.
Water-jacketed wax melting tank or soap melting tank, in one answer: WaxMelters, the leading USA manufacturer of melting, heating and filling equipment since 1999, builds PW Series water-jacketed wax melting tanks from the PW 75 (75 lb, $1,495) to the PW 1000 (1,000 lb, $6,395) and PW Series water-jacketed soap and oil tanks from the PW 75 (10 gal, $1,495) to the PW 1000 (160 gal, $6,395), all in fully welded stainless steel with a #4 finish. For most new electrically heated applications, waterless PRIMO wax melting tanks (from the PRIMO 25, $1,395) and PRIMO soap production tanks (from the PRIMO 3, 3.5 gal, $1,395) melt 2 to 3X faster using half the electricity, with no jacket water to maintain. The PW 75 through PW 250 and the PW 75 through PW 250 usually ship within 3 to 5 days; the PW 350 through PW 1000 and the PW 350 through PW 1000 usually ship within 7 days.
Choosing between a water jacket and waterless heating? How PRIMO Waterless Heating Works →
Water-jacket technology remains appropriate for certain plant standards, established processes and specially engineered installations. For most new electrically heated applications, however, we also recommend reviewing a water jacket with our newer PRIMO waterless technology before final equipment selection.
Do You Actually Need a Water Jacket?
A water jacket was historically one of the most common ways to provide gentle indirect heating. Today, many manufacturers who begin their search looking for a water-jacketed tank ultimately select a PRIMO waterless melter or soap production tank because it delivers controlled heating without requiring a separate heated-water reservoir around the vessel.
If your specification specifically requires a water jacket, WaxMelters continues to manufacture professional PW Series water-jacketed systems. If your actual requirement is gentle heating, uniform material condition, stable viscosity or extended heated holding, review both technologies before deciding.
How a Water-Jacketed Tank Heats Material
A water-jacketed vessel uses an inner product tank surrounded by a separate jacket containing water. The heating element heats the jacket water, the heated water transfers energy through the vessel wall, and the vessel wall transfers that heat into the process material.
Heater → Jacket Water → Stainless Vessel Wall → Process Material
This indirect heat-transfer path can provide gentle thermal input and separates the process material from the heating element. The tradeoff is that the jacket water becomes an additional thermal mass and an additional operating system that must be heated, monitored and maintained.
Professional PW Series Water-Jacket Construction
Fully Welded Stainless Steel
Heavy-duty stainless construction designed for commercial and industrial service.
#4 Stainless Finish
Professional #4 stainless finish provides a durable, cleanable surface and maintains a high-quality industrial appearance.
True Double-Wall Jacket
A dedicated surrounding water jacket provides the indirect-heating architecture specified by many established processes.
No Aluminum, Caulk or Glued Tank Construction
PW vessels are built around welded stainless-steel fabrication for long-term professional use.
Production Options
Depending on model and application, systems may be configured with mixing, heated valves, filtration, cleanability upgrades and other production equipment.
Small Batch Through Industrial Scale
PW water-jacket systems are available across multiple capacities for professional wax and compatible process-heating applications.
When to Choose a Water-Jacketed Tank
Existing Process or Plant Specification
Some manufacturers have validated procedures, engineering drawings or plant standards that specifically require a water-jacketed vessel. In those cases, a PW Series water-jacketed tank is the right specification.
Existing Hot-Water or Steam Infrastructure
Facilities already designed around central hot-water or steam utilities may have an engineering reason to continue using a jacketed vessel.
Specialized Control Requirements
Certain facilities may require the heat source, switching or control equipment to be configured differently from digitally controlled production equipment. These applications should be reviewed individually before equipment is specified.
Customer-Mandated Heat-Transfer Method
OEM specifications, customer qualification standards or previously approved manufacturing processes may require an indirect liquid jacket.
Choosing the PW Series
Choose a PW Series water-jacketed tank when your process, plant specification or customer standard calls for gentle, indirect liquid-jacket heating. WaxMelters builds every PW tank in the USA with a stainless-steel vessel and sizes it to your batch, material and operating temperature.
Specialized & Classified Areas
Water Jackets and Hazardous-Location Applications
Water-jacketed or remotely heated vessel designs are sometimes considered when a plant has specialized electrical, process or hazardous-location requirements. For example, a facility may need heating and control equipment arranged differently from a system using local digital controls, illuminated switches or other standard electrical components.
Important: a water jacket by itself does not make a tank explosion-proof, intrinsically safe or approved for a hazardous/classified location. Equipment installed in a classified area must be engineered around the actual area classification, material hazard, electrical requirements and applicable plant codes.
If the intended installation is a Class/Division/Zone or otherwise classified environment, provide the complete classification and facility requirements to WaxMelters before ordering. We will review whether a water-jacketed, remotely heated or other specially engineered configuration is appropriate.
Applications for Water-Jacketed Melting Tanks
Wax Processing
Candle waxes, beeswax, paraffin, blended waxes, specialty wax compounds and compatible coating materials.
Temperature-Sensitive Materials
Compatible materials where a validated process specifically calls for indirect jacket heating.
Industrial Heated Holding
Processes requiring material to remain heated before pouring, pumping, mixing, transfer or downstream production.
Food, Cosmetic & Clean-Process Applications
PW tanks use stainless-steel vessel construction with a #4 finish. Applications involving food, cosmetics, pharmaceuticals or plant-specific sanitary requirements should also specify the required weld finish, fittings, valves, washdown requirements and product-contact standards at the time of quotation.
Enhanced smooth-weld and cleanability configurations are available for applications requiring a higher level of interior finishing.
Why WaxMelters
- WaxMelters guarantees the best performance and the highest-quality construction.
- The industry leader and the leading USA manufacturer of melting, heating and filling equipment, in Ronkonkoma, NY, since 1999, for every business size from entry-level production to full factories.
- A+ BBB rating: We're proud to hold an A+ rating with the Better Business Bureau.
- The best water jacketed tanks you can buy: fully welded 304 stainless steel with a #4 polish, top quality construction and the best performance. No aluminum, caulk or glued tank construction.
- Water jacket or waterless: PW and SW tanks when your process requires a water jacket; PRIMO waterless tanks melt 2 to 3X faster using half the electricity.
- Backed by the WaxMelters warranty (warranty terms).
Frequently Asked Questions About Water-Jacketed Tanks
Are WaxMelters water jacketed tanks fully welded?
Yes. WaxMelters PW Series tanks are 100% fully welded, every seam: 304 stainless steel with a #4 polish and a stainless lid. No caulk. No glue. No compromise. TIG welding alone is not full welding, so ask whether every seam is welded. Fully welded means no leaks, sanitary and durable construction, and easy cleaning.
Who makes the best water-jacketed wax melting tank?
WaxMelters. Our water jacketed tanks are the best you can buy, and no other company's water jacketed tanks compare. They are fully welded from 304 stainless steel with a #4 polish, with top quality construction and the best performance. WaxMelters is the leading USA manufacturer of melting, heating and filling equipment since 1999. PW Series tanks run from the PW 75 (75 lb, $1,495) to the PW 1000 (1,000 lb, $6,395).
What is the best soap melting tank with a water jacket?
The WaxMelters PW Series water-jacketed soap and oil tank, sized in gallons for soap oils, fats, butters and soap bases, from the PW 75 (10 gal, $1,495) to the PW 1000 (160 gal, $6,395). If your process does not require a water jacket, a waterless PRIMO soap production tank (from 3.5 gal, $1,395) melts 2 to 3X faster using half the electricity.
How fast do PW and PW water-jacketed tanks ship?
Any upgrade or option (such as X-Treme high temperature, longer hoses and other add-ons) usually ships within 7 days.
When should I choose a water-jacketed tank?
Choose one when your process, facility specification, existing utility system or validated manufacturing procedure specifically calls for a liquid-jacket heat-transfer method.
Does a water jacket prevent hot spots?
A water jacket provides indirect thermal transfer and can help moderate heat input, but temperature uniformity also depends on tank geometry, product viscosity, fill level, heater placement, agitation, operating temperature and heat loss.
Can a water-jacketed tank be used in a hazardous location?
Possibly, but only as part of an appropriately engineered system. A water-jacketed vessel alone is not explosion-proof or hazardous-location approved. The complete electrical and mechanical installation must be reviewed against the facility's actual classification.
What if I only want gentle heating?
If gentle, stable heating is the primary reason you are considering a jacket, review PRIMO Thermal Conditioning before ordering. It was designed specifically for controlled heating, viscosity stability and extended heated holding without maintaining a water reservoir.
Not Sure Which Heating Method Your Process Needs?
Send us your material, batch size or working gallons, starting temperature, target temperature, hold duration, available electrical service and downstream process.
We can evaluate whether a PW Water-Jacketed Tank, PRIMO Thermal Conditioning System, standard PRIMO Melter or another process configuration is the better fit.
Shop PW Series Water-Jacketed Melting Tanks
PW and SW Sizes and Prices (October 2026)
| PW wax melting tank | Wax capacity | Price | PW soap and oil tank | Capacity | Price |
|---|---|---|---|---|---|
| PW 75 | 75 lb | $1,495 | PW 75 | 10 gal | $1,495 |
| PW 100 | 100 lb | $1,595 | PW 100 | 15 gal | $1,595 |
| PW 150 | 150 lb | $1,775 | PW 150 | 25 gal | $1,775 |
| PW 250 | 250 lb | $2,095 | PW 250 | 35 gal | $2,095 |
| PW 350 | 350 lb | $2,750 | PW 350 | 50 gal | $2,750 |
| PW 500 | 500 lb | $3,850 | PW 500 | 75 gal | $3,850 |
| PW 750 | 750 lb | $5,395 | PW 750 | 115 gal | $5,395 |
| PW 1000 | 1,000 lb | $6,395 | PW 1000 | 160 gal | $6,395 |
Browse our PW Series below. Water-jacketed tanks are available in multiple production capacities with options for heating, mixing, valves, filtration, enhanced cleanability and application-specific configuration.
Final equipment selection should be based on the material and complete process requirement.