Air Hose Sizes Chart for Compressors and Tools
Which air hose and fitting sizes the listings state for garage compressors and tools, from main line tubing to blow gun hose.
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A tire rotation that turns into a fight with a kinked hose usually comes down to size, not effort. The hose is too narrow for the tool, too short for the bay, or fitted with ends that do not match the compressor outlet, and the tool starves while the compressor runs. This air hose sizes chart sorts that out: which hose and fitting sizes the listings state, and the kits that carry those sizes.
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Below: the sizes the listings state, what each size fits, and a checklist for matching hose, fittings and length before the first job.
| # | Product | Shop Score | Buy |
|---|---|---|---|
| 1 |  MOLAVIEE Shop Air Line Kit | 9.6/10 | Buy on Amazon |
| 2 |  Compressed Air Piping System with 3/4 Inch ID x | 9.6/10 | Buy on Amazon |
| 3 |  Qolekog Air Blow Gun kit with 16ft Long 8mm OD | 9.4/10 | Buy on Amazon |
MOLAVIEE Shop Air Line Kit
A 90-piece shop air line kit with 3/4 in x 100 ft HDPE-aluminum tubing and brass fittings, rated to 200 PSI.
Pros
- Triple-layer HDPE-aluminum-HDPE tubing resists corrosion and rust
- Rated to 200 PSI at 73°F, with 160 PSI at 140°F stated
- 90 pieces cover tubing, fittings, drain valves, clips and tools
- Meets ASTM F1282 and F1974 standards
Cons
- No warranty term is stated
- Blue color only in this listing
- Needs wall, ceiling or buried mounting; no freestanding layout is stated
- Fixed size: 3/4 in tubing with no smaller option in this listing
Compressed Air Piping System with 3/4 Inch ID x
A 53-piece compressed air piping kit with 3/4 in ID x 200 ft HDPE tubing and aluminum outlet blocks, rated to 200 PSI.
Pros
- 200 ft of tubing covers a larger shop in a single run
- Rated to 200 PSI at 73°F, with 160 PSI at 140°F stated
- Manifold carries 1/4 in, 1/2 in and 3/8 in NPT ports
- Meets ASTM F1282 and F1974 standards
Cons
- Title states 53 pieces while the spec table states 54, so the count is unclear
- No warranty term is stated
- A bullet describes the pipe as crafted from copper and nickel, which does not match the HDPE-aluminum tubing described elsewhere
- Fixed size: 3/4 in tubing with no smaller option in this listing
Qolekog Air Blow Gun kit with 16ft Long 8mm OD
A blow gun kit with a 16 ft long 8 mm OD coil PU air hose, a 1/4 in industrial fitting and a T-type adapter.
Pros
- 8 mm tube offers higher flow than the 6 mm hose in the same listing
- Bend restrictor guards against excessive bending damage
- T-type adapter with bronze ball shut-off valve expands the setup
- 1/4 in industrial D type plug connects straight to a compressor
Cons
- No pressure rating is stated in the listing
- No safety certification is stated
- Hose length is 16 ft, so it suits close work rather than a full shop run
- No warranty term is stated
Air hose sizes chart: what the listings state
| Size | Where it appears | What the listing states |
|---|---|---|
| 3/4 in ID tubing | MOLAVIEE and Fideursus line kits | Main line tubing for a garage air system, rated to 200 PSI |
| 1/2 in NPT | MOLAVIEE plugs and fittings; Fideursus manifold ports | Fittings and plugs on the line kits |
| 3/8 in NPT | MOLAVIEE drain valves; Fideursus drain valve port | Drain valve ports |
| 1/4 in NPT | Fideursus manifold front port; Qolekog blow gun fitting | Tool and manifold connections |
| 8 mm OD | Qolekog blow gun hose | Coil PU hose, higher flow than the 6 mm OD hose in the same listing |
| 6 mm OD | Qolekog listing comparison | The smaller hose the 8 mm tube is compared with |
Match the fitting to the port it threads into: the kits list NPT sizes, and the blow gun uses an industrial D type plug. A hose that fits the compressor outlet but not the tool inlet still starves the tool.
Length and pressure: what changes with the run
Length and pressure rating decide whether the air still does the job at the tool. The MOLAVIEE kit carries 100 ft of tubing, and the Fideursus kit carries 200 ft, so the longer run suits a bigger shop. Both kits are rated to 200 PSI at 73°F and 160 PSI at 140°F, which the listings state as the working limits. The Qolekog blow gun kit pairs a 16 ft coil hose with its blow gun for close work such as clearing a cab or a sleeper. Stay inside the rated pressure.
How to read the fittings on these kits
The MOLAVIEE kit packs 90 pieces, including aluminum blocks, NPT plugs, tubing tees, straight fittings, drain valves, tubing clips, screws, O-rings, a bevel tool, a pipe cutter, gloves and Teflon tape. The Fideursus kit lists 53 pieces in its title, with a manifold carrying 1/4 in NPT, 1/2 in NPT and 3/8 in NPT ports. Count the ports on the manifold against the outlets the shop needs.
Air hose sizes chart: the gear picks
The kits below carry the sizes in the chart above, from a full garage line to a blow gun for close work, ranked by their Shop Scores.
Wear eye protection with every air tool, use impact-rated sockets on impact wrenches, disconnect the air line before changing accessories, and finish lug nuts with a torque wrench to the vehicle's spec. See OSHA eye and face protection. Read our Safety Disclaimer.
Blowing dust and debris safely
Wear eye protection when blowing dust off parts, and never point a blow gun at people or use it on skin. Keep the hose away from hot surfaces and sharp edges, and release the pressure before changing fittings.
FAQ: garage tools
What size air hose do I need for garage tools?
Match the hose inside diameter and the fittings to the tool and the compressor outlet. The kits here use 3/4 in ID main line tubing with 1/2 in, 3/8 in and 1/4 in NPT ports, and the blow gun kit uses an 8 mm OD coil hose with a 1/4 in industrial fitting. Check the tool manual, then match the hose and both ends.
Is a 200 PSI rating enough for garage air tools?
Both line kits here are rated to 200 PSI at 73°F and 160 PSI at 140°F, which covers the working pressure the listings state. Stay inside the rated pressure.
Can HDPE air line be buried underground?
The MOLAVIEE listing states its pipeline can be mounted on walls or ceilings, suspended in the air or buried in the ground. The Fideursus listing states its pipe can be painted and buried in soil.
What is the bend radius of HDPE air line?
Both line kits state a bend radius of 6 to 8 inches. For tighter bends, the Fideursus listing states an L-fitting can be added in the middle.
Do I need Teflon tape on air line fittings?
The MOLAVIEE kit includes Teflon tape and O-rings for a leak-resistant connection, and the listing states the system is equipped with O-rings and Teflon tape. Use the tape and rings the kit supplies.
Related: the 3/8 vs 1/2 air hose comparison and 1/4 vs 3/8 air hose, and the how to choose an air compressor guide. Also see best air compressors and quick connect vs threaded air fittings.
