copper pipe coil 1/4 inch is copper tube with an outside diameter of 6.35 mm, wound into a 15 metre coil. It is often used for the liquid line of small wall split AC units and the small refrigerant lines on fridges, freezers and display chillers.
A coil lets you cut exactly the length the job needs, so long runs need fewer joints. In addition, soft copper bends with a tube bender and flares cleanly for flare-nut connections.
What is a copper pipe coil?
A copper pipe coil is copper tube wound into a coil, usually soft annealed so it bends by hand or with a bender. In refrigeration and air conditioning, copper tube is named by its actual outside diameter in inches, so 1/2 inch tube measures 12.7 mm across the outside.
Coils are easy to carry and cut to length, so technicians use them for split AC line sets, refrigeration repairs and gauge lines. The ends are usually flared for flare-nut connections or brazed to copper fittings.
Further reading
- Copper tubing: types and sizes (Wikipedia)
- Flare fittings and how they seal (Wikipedia)
- What annealing does to metals (Wikipedia)
Key terms explained
- ACR copper tube
- Copper tube made for air conditioning and refrigeration. It is cleaned inside and named by its outside diameter, as set out in standards such as ASTM B280.
- Outside diameter (OD)
- The measured width across the outside of the tube. ACR tube is named by its OD, so 5/8 inch tube measures 15.88 mm across.
- Suction and liquid lines
- The two refrigerant pipes between indoor and outdoor units. The larger suction line returns cool gas to the compressor, and the smaller liquid line carries liquid refrigerant to the indoor coil.
- Annealed (soft) copper
- Copper that has been heat treated to make it soft. It bends by hand or with a bender, so it is supplied in coils.
- Flare joint
- A joint made by widening the end of soft copper tube into a cone with a flaring tool, then clamping it with a flare nut onto a matching fitting.
- Copper coil (roll)
- Soft copper tube wound into a coil for transport. It unrolls on site and is cut to length, which reduces the number of joints.
Features and benefits
- Coiled tube that is easy to carry and cut to length.
- Supplied in 15 m coils, so long runs need fewer joints.
- Ends flare cleanly for flare-nut connections.
- Named by outside diameter, so it matches AC flare nuts and service valves.
- High thermal conductivity and good corrosion resistance.
- Can also be brazed to copper fittings.
Technical specifications
| Product | Copper Pipe Coil 1/4 Inch (6.35 mm), 15 m |
|---|---|
| Outside diameter | 1/4 inch (6.35 mm) |
| Form | Coil |
| Coil length | 15 m |
| Temper | Soft annealed, confirm with quote |
| Material | Copper |
| Wall thickness | Confirm with quote |
| Joining | Flare or brazed |
| Matching insulation | 1/4 inch Armaflex tube |
| Supplier | Sparks Plumbing Experts Ltd, Nairobi |
Temper, wall thickness and pressure rating depend on the batch. Tell us the refrigerant and quantity, and we will confirm current stock.
Applications of copper pipe coil 1/4 inch
- Split AC installation. Forms the suction and liquid lines between indoor and outdoor units.
- AC line extensions. Extends existing line sets when a unit is moved or relocated.
- Ducted and cassette AC. Connects ducted and ceiling cassette units to their outdoor units.
- Domestic fridges and freezers. Replaces damaged refrigerant lines during repairs.
- Display chillers and bottle coolers. Repairs and replaces lines on shop chillers and coolers.
- Cold rooms. Connects cold room evaporators to condensing units.
- Condensing unit hook-ups. Joins condensing units to coils and expansion valves.
- Heat pumps. Carries refrigerant in air-source and water heating heat pumps.
- Dairy milk coolers. Forms refrigerant lines on bulk milk cooling tanks.
- Ice makers and water dispensers. Forms refrigerant lines in ice machines and water dispensers.
- Transport refrigeration. Repairs refrigerant lines on refrigerated truck units.
- Coil repairs. Replaces damaged sections on evaporator and condenser coils.
- Gauge and control lines. Connects pressure gauges, switches and controls.
- Solar water heating. Connects solar collectors to hot water cylinders.
- Hot and cold water lines. Carries domestic water where copper plumbing is specified.
How to choose and install
- Check the line sizes in the equipment maker manual, then order tube with the matching outside diameter.
- Confirm the wall thickness suits the refrigerant pressure, especially on R410A and R32 systems.
- Unroll the coil on a flat surface and straighten it gently, so it does not kink.
- Use a tube bender for tight bends, because hand bending can flatten the tube.
- Cut square with a tube cutter, ream the burr, then flare with a flaring tool sized to the tube.
- Keep tube ends capped until use, so dust and moisture stay out.
- Insulate suction lines with Armaflex tube of the same size to stop condensation.
Why choose Sparks Plumbing Experts
- Gases, oils and parts togetherRefrigerants, compressor oils, copper pipe, driers and tools come from one counter, so a repair needs one trip.
- Brands technicians knowOur range includes names such as Danfoss, Maxron, Suniso and Emkarate.
- Compatibility checksWe point out refrigerant, oil and voltage compatibility before you buy, which helps avoid costly mistakes.
- Tools for the whole jobGauges, flaring kits, brazing torches and gas are stocked alongside the parts they install.
- Visit or collect in NairobiOur store is at KCB Building, Enterprise Road, in the Industrial Area, so you can see parts before you buy or collect your order.
- Quotes your wayAsk for prices by phone, WhatsApp, email or the online quote form, whichever suits you on site.
- Over 1,600 products in one placeOur catalogue covers 55 categories, so one supplier can handle most of your parts list.
- Help choosing the right partSend a nameplate photo, a drawing or the old part, and we help you match size and specification.
- Single items or project quantitiesWe price a single replacement part just as readily as a full site order.
- Supply across East AfricaWe serve customers across Kenya, and we also supply buyers in Uganda and Tanzania.
Related products and accessories
Browse more: Copper pipes rolls · Insulation · AC and refrigeration tools · Refrigeration Gases.
Ordering from Sparks Plumbing Experts
We supply customers across Kenya, and we also serve buyers in Uganda and Tanzania. You can collect from our store at KCB Building, Enterprise Road, Nairobi, or ask us about delivery to your site. Send your quantities and specifications, and we will reply with prices and availability.
Request a Quote WhatsApp 0726 086 895
Frequently asked questions
What is the outside diameter of copper pipe coil 1/4 inch?
It is 6.35 mm. ACR copper is named by outside diameter, so measure an existing tube with a caliper to confirm the match.
Where is copper pipe coil 1/4 inch used?
It is often used for the liquid line of small wall split AC units and the small refrigerant lines on fridges, freezers and display chillers. Always follow the line sizes in the equipment manual.
How long is a copper pipe coil 1/4 inch?
This listing is for 15 metre coils. Tell us how many coils you need, or ask if you need a different length.
Which insulation fits copper pipe coil 1/4 inch?
Choose 1/4 inch Armaflex insulation tube, which is sized to slip over 1/4 inch copper. Pick the insulation wall thickness to suit how cold the line runs.
What details do you need to quote copper pipes?
Tell us the tube size, whether you need rolls or straight lengths, the quantity and the refrigerant. A photo of the old part, a nameplate or a drawing also helps. Then call or WhatsApp 0726 086 895, or use the quote form on this page.
Do you deliver copper pipes outside Nairobi?
Yes. We supply customers across Kenya, and we also serve buyers in Uganda and Tanzania. Delivery or courier arrangements are agreed when you confirm the order.
How much does a copper pipe cost in Kenya?
The price depends on the size, the form (roll or straight), the quantity and current copper prices. Therefore, send your list with a quote request and we will reply with current figures.
How is soft copper pipe joined?
Soft copper is often flared and joined with flare nuts, especially at AC service valves. It can also be brazed to copper fittings.
Is this copper pipe suitable for R410A and R32?
These refrigerants run at higher pressure, so the tube wall must be rated for them. Tell us the refrigerant, and we will confirm the wall thickness of the stock we offer.
Do I need to insulate copper refrigeration pipe?
Yes for suction lines, because cold copper sweats and gains heat. Fit Armaflex insulation tube of the same size over the pipe.
Should I keep copper pipe ends capped?
Yes. Keep the ends sealed until installation, so dust and moisture stay out of the refrigerant system.
Can copper pipe be used for drinking water?
Yes. Copper has long been used for hot and cold water lines. However, for refrigeration work, keep ACR tube clean and capped and use it only for refrigerant.
People also search for
copper pipe sizes in mm
ACR outside diameters: 1/4 inch is 6.35 mm, 3/8 inch 9.52 mm, 1/2 inch 12.7 mm, 5/8 inch 15.88 mm, 3/4 inch 19.05 mm and 7/8 inch 22.23 mm.
copper pipe roll vs straight copper pipe
Rolls are soft and bend easily, so they suit split AC installs. Straight lengths are rigid and suit long runs, risers and headers.
AC copper pipe size for 12000 BTU
Many 9,000 to 12,000 BTU wall splits use a 1/4 inch liquid line with a 3/8 or 1/2 inch suction line. Check your unit manual, because it varies by model.
how to flare copper pipe
Cut square, ream the burr, slide on the flare nut, then form the flare with a flaring tool sized to the tube.
how to braze copper pipe
Clean and fit the joint, purge with dry nitrogen, heat evenly with a brazing torch, then feed the brazing rod.
copper vs aluminium AC pipe
Copper is easier to braze and repair on site. Aluminium is lighter and cheaper, but it is harder to join and repair.
Type L vs ACR copper
Type L is a plumbing tube named by nominal size. ACR tube is named by outside diameter and cleaned for refrigeration use.
does AC copper pipe need insulation
Suction lines need insulation to stop condensation and heat gain. On split units the liquid line is usually insulated as well.
how long does copper pipe last
Installed correctly, copper lines often last for decades. Vibration, rubbing and poor joints are the usual causes of leaks.
Copper pipe price in Kenya
Prices change with size, model and quantity. Request a quote from Sparks Plumbing Experts for current figures.
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