Refrigeration Oil Danfoss 320SZ for SY compressors

How to Buy Danfoss 320SZ: Terms, Packing and Documents

Danfoss 320SZ is supplied on published terms: the specification, the price terms, the payment terms and the documents are the same for every buyer, and they can be quoted without a site visit. The minimum order is deliberately left open, because it is judged case by case: the grade, the quantity, the pack size, the shipping terms and the container load all move it, so a single can and a full container load are both workable and neither is treated as the normal case. Send us the quantity, the destination port and whether your own brand goes on the container, and those three turn the table below into a firm quotation. Documents and lead time work the same way on every order: the technical data sheet and safety data sheet come with the quotation, and the certificate of analysis for the delivered batch comes with the shipment. This grade is supplied wholesale and in bulk — to distributors, HVACR service companies, compressor OEMs and private-label buyers — as well as in single packs and sample quantities.

Supply ability is stated for this grade rather than for the plant as a whole. It is not the annual capacity of the blending plant.

Is Danfoss 320SZ the Right Oil for Your System?

What Else Can We Handle for Your Project?

A lubricant order is rarely only a lubricant order. The buyer is usually solving a grade question, an import documentation question, a freight question and a packaging question at the same time — often across more than one product family. Those are the parts of the job we take on, and they are handled by the same team that quotes the oil rather than passed to a third party.

We are a manufacturer rather than a reseller, which is what makes that possible. The blending plant in Foshan, Guangdong runs at 6,000 tonnes a year and has been producing lubricants for more than ten years, so the answer to most of the questions below comes out of our own production and our own paperwork.

The point of this list is that the questions are answered before the order rather than after it. If you are unsure which of them applies to you, describe the system and we will tell you what we need.

How to Order Danfoss 320SZ

Identification comes before pricing, because Danfoss assigns its oils to compressor series and refrigerant combinations rather than to a viscosity number, and the wrong oil type is the mistake that costs a compressor. The sequence is the same whether you are buying one can or a full container:

1. Send us the compressor model, the refrigerant, the oil type on the nameplate and the quantity you need.
2. We check the oil against the manufacturer’s published compressor-to-oil table and confirm whether your machine is in the series listed for 320SZ or takes a different oil type.
3. We quote against your destination port on any Incoterms 2020 term (EXW, FOB, CFR, CIF, DDP and every other rule), with the pack size and the lead time for that quantity.
4. The technical data sheet and safety data sheet come with the quotation, and a certificate of analysis for the delivered batch comes with the shipment.

If you already know the oil type and only need a price, send the quantity and the destination port and we will quote directly.

What Danfoss Publishes About the 320SZ Oil

Danfoss publishes a factsheet for its commercial compressor oils that gives, for each oil type, the compressor series it belongs to, the refrigerants it is used with, whether it is the factory charge or the top-up oil, and the order codes it is sold under. The table below reproduces the rows that name 320SZ. What the document does not contain is a viscosity table, so none is reproduced here.

The manufacturer does not publish a kinematic viscosity or an ISO 3448 class for these oils in this document. It publishes which compressor series and which refrigerants each oil type is used with, and the order codes and can sizes it is supplied in. This page therefore quotes no viscosity figure and no ISO VG class, because there is no published value to quote and a figure taken from a reseller listing would not be checkable against the brand owner. The manufacturer states that each Danfoss oil is specifically selected and tuned with additives for optimal performance in the indicated compressor series, and that when an oil top-up is needed the oil type listed in its table must always be used, otherwise the compressor warranty may be voided.

Danfoss Compressor Series: Which Oil Type Each One Takes

The manufacturer’s own table sets out the oil type for every series of its commercial compressors, and reproduces with it the refrigerants each series runs on. It is reproduced here in full, with the rows that name 320SZ marked, because the oil type is assigned by series and a reader needs to see where this one sits rather than only the rows that mention it.

The manufacturer prints the compressor-to-oil table with the note that the qualified models should be confirmed against its guideline for qualified models, so the table is a guide to which oil type belongs to which series rather than a statement about every individual model number. For compressors factory-charged with 160HV (PVE32), the manufacturer states that topping up with 320HV (PVE68) is allowable, that there are no reliability risks even with 100 percent 320HV, but that performance may drop somewhat; 320HV is supplied as an accessory. The manufacturer identifies 320HV by the alternative designation FVC68D in its own ordering information, which is how the two names are tied together in the published document.

Where Danfoss 320SZ Sits in the Danfoss Oil Range

Danfoss supplies a small number of oil types across its commercial compressor ranges, and each one is tied to a series rather than offered as a general-purpose grade. The table shows the oil types the manufacturer lists, the series each belongs to and the refrigerants it is used with, with this oil marked. It is the comparison a buyer needs before substituting anything.

Chemistry, series and refrigerants are reproduced from the manufacturer’s factsheet. The manufacturer does not publish a viscosity or an ISO VG class for these oils, so none is shown; the oils are distinguished by series and refrigerant rather than by a viscosity number.

Cross-References and Alternatives

If this oil is not the one you need, the sections below show where it sits against the rest of the Danfoss oil types and against the oils we manufacture ourselves, so a substitution can be checked before it is ordered.

A substitution should be made on the compressor series and the refrigerant the oil is published for, not on the brand name alone. Because the manufacturer publishes no viscosity for these oils, the series and the refrigerant are the figures that can be compared.

Why No Viscosity Figure Appears on This Page

In most of this product category a page can quote a kinematic viscosity at 40 °C and place the oil in an ISO 3448 class. That works when the brand owner publishes a typical-properties table. Danfoss does not, for these oils.

The manufacturer does not publish a kinematic viscosity or an ISO 3448 class for these oils in this document. It publishes which compressor series and which refrigerants each oil type is used with, and the order codes and can sizes it is supplied in. This page therefore quotes no viscosity figure and no ISO VG class, because there is no published value to quote and a figure taken from a reseller listing would not be checkable against the brand owner.

What the manufacturer publishes instead is the assignment of each oil type to a compressor series. For a buyer that is the figure that does the work: the oil is not chosen from a viscosity number, it is chosen to match the series and the refrigerant the compressor runs on, and the manufacturer ties its warranty to using the listed oil type.

Why the Oil Type Is Assigned by Series and Not by Viscosity

Danfoss selects each of its oils for a compressor series and tunes it with additives for that series, which is why the same chemistry appears under more than one oil type. A polyolester is used for the SZ, SH, PSH, DSH, DSN, VZN and VZH088/117/170 series as 160SZ, for the MTZ, NTZ and VTZ series as 175PZ, for the SY and PSG series as 320SZ, and for the MLZ, LLZ and VLZ families as 215PZ.

That is the shape of the decision: the series and the refrigerant come first, and the oil type follows. The manufacturer states that each Danfoss oil is specifically selected and tuned with additives for optimal performance in the indicated compressor series, and that when an oil top-up is needed the oil type listed in its table must always be used, otherwise the compressor warranty may be voided.

The practical consequence is that a top-up has to match the nameplate rather than the shelf. For compressors factory-charged with 160HV (PVE32), the manufacturer states that topping up with 320HV (PVE68) is allowable, that there are no reliability risks even with 100 percent 320HV, but that performance may drop somewhat; 320HV is supplied as an accessory.

Why the Compressor-to-Oil Table Is Reproduced in Full

The table on this page is the manufacturer’s own, reproduced with the refrigerants each series runs on and with the factory-charge and top-up columns kept apart. Keeping both columns matters, because for the VTZ series the factory charge and the top-up oil are not the same grade, and a reader who only saw the factory column would assume they were.

The manufacturer prints the compressor-to-oil table with the note that the qualified models should be confirmed against its guideline for qualified models, so the table is a guide to which oil type belongs to which series rather than a statement about every individual model number.

The rows that name 320SZ are marked so a reader can see where this oil sits, but the rows around them are kept because the comparison is what makes the page useful.

Why the Ordering Information Is Reproduced

The second half of the manufacturer’s document is the ordering information: the code number, the oil type and can size, and the compressor series the can is intended for. It is the part of the document that ties a product name to a part number and a package.

It also settles a naming question. The manufacturer identifies 320HV by the alternative designation FVC68D in its own ordering information, which is how the two names are tied together in the published document. A buyer who has been given the part number by a service company can check it against this table, and a buyer who has been given the name can see which part numbers carry it.

Where the manufacturer publishes the can sizes, this page lists them, and where it does not, the page says the pack format is confirmed at quotation rather than inventing a table.

Why We Do Not Fill the Gap From Reseller Listings

Viscosity figures for these Danfoss oils circulate freely on distributor and marketplace listings, and some of them disagree with one another. None of them is the brand owner’s own publication, so none of them can be traced back to a source that carries the manufacturer’s authority.

The rule this page follows is that a figure is quoted only when the brand owner publishes it. Where the brand owner publishes nothing for a property, the page says so. That is why the viscosity row above reads "not published by the manufacturer" rather than carrying a number from elsewhere — a number a buyer cannot check is worse than no number at all.

The same rule applies to the oil-type chemistry: the chemistry quoted here is the one printed against each oil in the manufacturer’s own table, not one inferred from a product name.

Why We Can Supply This Oil From Our Own Plant

We manufacture lubricants at our own blending plant in Foshan, Guangdong, which runs at 6,000 tonnes a year and has been producing for more than ten years. That is what allows us to quote our own heavy polyol ester against this grade from our own line, and to hold stock on the grades we list rather than promising on behalf of a third party.

It also means the answer to a question about the oil comes from the plant rather than from an intermediary. If you need the oil matched to a compressor model, or to know which documents come with the shipment, tell us at the enquiry stage and we will confirm it against your destination rather than leave it until the order is placed.

Alongside the refrigeration oils the same plant produces air compressor oils, vacuum pump oils and general industrial lubricants, so a mixed enquiry can be quoted, packed and shipped as one shipment rather than split across suppliers.

Frequently Asked Questions

Q: Is there a minimum order for Danfoss 320SZ, and what pack sizes are available?

A: There is no fixed minimum order — it is confirmed per order, because it depends on the pack size, the quantity and the destination, and a single can and a full container load are both workable. The manufacturer publishes the can sizes this oil is supplied in, and they are listed on this page. Custom pack formats and private-label artwork are available as a quotation item, so if your own label has to go on the container, say so when you enquire and it is quoted as part of the project rather than added afterwards.

Q: What is Danfoss 320SZ, and what is it used for?

A: Danfoss 320SZ is a polyolester (POE) refrigeration and air-conditioning lubricant that Danfoss supplies for its own commercial compressor ranges. The manufacturer lists it for Danfoss SY185 and SY240-380 compressors (R22, and on SY185 also R407C, R134a and R513A), and the PSG series. It is assigned to a compressor series rather than to a viscosity class, and the manufacturer states that each danfoss oil is specifically selected and tuned with additives for optimal performance in the indicated compressor series, and that when an oil top-up is needed the oil type listed in its table must always be used, otherwise the compressor warranty may be voided.

Q: What is the viscosity of Danfoss 320SZ?

A: The manufacturer does not publish a kinematic viscosity or an ISO 3448 class for this oil, so no figure is quoted on this page. The manufacturer does not publish a kinematic viscosity or an ISO 3448 class for these oils in this document. It publishes which compressor series and which refrigerants each oil type is used with, and the order codes and can sizes it is supplied in. This page therefore quotes no viscosity figure and no ISO VG class, because there is no published value to quote and a figure taken from a reseller listing would not be checkable against the brand owner.

Q: Does Danfoss 320SZ have an ISO VG number?

A: No ISO VG number is published for it. Danfoss assigns these oils to compressor series and refrigerants rather than to ISO 3448 classes, and it prints no viscosity value for them in the document it publishes. The figure that identifies the oil is the series: SY185, SY240-380, PSG.

Q: What refrigerant is Danfoss 320SZ for?

A: The manufacturer pairs it with R22, R407C, R134a, R513A; R22; R600a, R1234ze(E), R515B. Because the refrigerant is part of how the oil is assigned, check the refrigerant on the nameplate against the published table before ordering; the full table is reproduced on this page.

Q: Which compressors is Danfoss 320SZ for?

A: The manufacturer lists it as the factory-charged oil for SY185, SY240-380, PSG. The manufacturer prints the compressor-to-oil table with the note that the qualified models should be confirmed against its guideline for qualified models, so the table is a guide to which oil type belongs to which series rather than a statement about every individual model number. The full table is reproduced on this page with the rows that name this oil marked.

Q: What is the difference between Danfoss 320SZ and Danfoss 160SZ?

A: Both are Danfoss oils for commercial compressors, but they are listed for different series. Danfoss 320SZ is the heaviest of the three polyolester grades Danfoss lists for its commercial scroll ranges, and Danfoss 160SZ is the lighter POE Danfoss lists for the SZ series. Because the manufacturer assigns oils by series rather than by a viscosity number, they are not interchangeable even where the applications overlap. Send us the compressor model and the nameplate oil type and we will confirm which one matches the machine.

Q: Can Danfoss 320SZ be mixed with another oil?

A: No. The manufacturer states that when a top-up is needed the oil type listed in its table must always be used, otherwise the compressor warranty may be voided. That means a top-up is made with the same oil type the compressor was charged with. Where a machine is being changed over from one oil type to another, the old charge is drained and the circuit flushed and evacuated rather than topped up.

Q: How is Danfoss 320SZ stored and handled?

A: Store it sealed, away from direct sunlight, and keep the container closed between top-ups. The container should be resealed after every use and the oil should not be decanted into an unlined steel drum where it can pick up rust and moisture. Because the oil type is tied to the compressor series, keep it identified at the container so that a top-up is not made with the wrong type from the shelf.

Q: Can you supply Danfoss 320SZ in our own brand?

A: Yes. Private-label artwork and custom pack formats are a normal quotation item, and the container is packed at our plant in Foshan. Tell us at the enquiry stage that your own label is required, and the artwork and the pack are quoted together with the oil rather than added afterwards.

Q: What documents come with the oil?

A: The technical data sheet and safety data sheet come with the quotation, and a certificate of analysis for the delivered batch comes with the shipment. CE, CO, MSDS and transport certification are issued as standard documents with an export order; tell us at the enquiry stage which certificate the destination requires.

Key Takeaways

• Danfoss 320SZ is a polyolester (POE) refrigeration lubricant that Danfoss supplies for its own commercial compressor ranges.
• The manufacturer lists it for Danfoss SY185 and SY240-380 compressors (R22, and on SY185 also R407C, R134a and R513A), and the PSG series.
• Danfoss assigns its oils to compressor series and refrigerants rather than to a viscosity class, which is why the oil type is the figure that identifies it.
• The manufacturer publishes no kinematic viscosity and no ISO VG class for this oil, so no viscosity figure and no class number appear on this page.
• The factory-charge column and the top-up column are not always the same grade: for the VTZ series the factory charge is 160PZ and the top-up oil is also listed as 175PZ.
• The manufacturer states that each Danfoss oil is specifically selected and tuned with additives for optimal performance in the indicated compressor series, and that when an oil top-up is needed the oil type listed in its table must always be used, otherwise the compressor warranty may be voided.
• The manufacturer prints its compressor-to-oil table with a note that the qualified models should be confirmed against its guideline for qualified models, and that note is reproduced here rather than dropped.
• The ordering information ties the oil type to the part numbers and can sizes it is supplied in, and those are reproduced on this page.
• We manufacture a polyolester (POE) equivalent at this grade at our blending plant in Foshan, China (Qishanr QSL-68H), and state plainly that it is our own production.
• There is no fixed minimum order: it is confirmed per order against the pack size, the quantity and the destination, so a single can and a full container load are both workable.
• Delivery is on any Incoterms 2020 term and payment on any commonly used method, including T/T, L/C and PayPal; the technical data sheet and safety data sheet come with the quotation.

Standards and Sources Behind the Data on This Page

Every figure on this page is taken from a document published by the brand owner rather than from our own measurement, so each one can be checked before you buy. This is the set of sources, with what each one establishes.

Where a value is published by the manufacturer, it is reproduced with the document it comes from, so that it can be traced. Where the manufacturer publishes nothing for a property — which is the case for viscosity and ISO VG class on this page — this page says so rather than quoting a value from another source.