Gravity Feed vs Siphon Feed Spray Gun: Which to Buy?

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Gravity feed vs siphon feed spray gun: the difference

A gravity feed gun carries its cup on top, usually 600 to 1000cc here, so gravity pushes paint to the nozzle and the gun needs less air pressure to atomize. A siphon feed gun carries its cup underneath and relies on the air stream to pull paint up, which typically needs more pressure and wastes more material. HVLP gravity guns like these three are the common choice for auto paint because the high volume, low pressure design puts more paint on the panel.

Nozzle sizes: 1.4 to 2.5mm

The ENDOZER states 1.4, 1.7 and 2.0mm nozzles; both Zeinlenx kits state 1.4, 1.7, 2.0 and 2.5mm. Smaller nozzles suit base and clear coats, larger ones suit primer and heavy coatings. The Zeinlenx 2008-4 states a 15-hole copper atomizer with up to 65% transfer efficiency, the 827-4 states up to 60%.

Cups: 1000cc aluminum vs 600ml disposable

The ENDOZER and the Zeinlenx 827-4 state 1000cc aluminum cups for longer sessions. The Zeinlenx 2008-4 states a 600cc PP cup plus 10 disposable 600ml cup liners, which cuts cleaning time and paint waste between colors. Pick the aluminum cup for big panels and the disposable system for frequent color changes.

Controls and air requirements

The ENDOZER states fluid, pattern and air controls plus a pressure gauge and quick adapter in the box. The Zeinlenx 2008-4 states 2.5-3.5 bar working pressure and 275 L/min air consumption. All three need an air compressor; none of the listings states a compressor size, so size yours to the 275 L/min figure the 2008-4 states.

Buying advice: matching the gun to the job

Start with the nozzle sets, because they decide what each gun can spray. The ENDOZER ships 1.4, 1.7 and 2.0mm stainless nozzles; both Zeinlenx kits ship 1.4, 1.7, 2.0 and 2.5mm, with the 1.4mm pre-installed on the 827-4. The listings name the same coatings across the kits: the 827-4 is listed for clear coat, base coat and primer, and the 2008-4 for base coat, clear coat and primer. The practical reading is the one the listings imply: smaller nozzles for thinner coatings like clear and base coat, larger nozzles for primer. The 2.5mm nozzle on the Zeinlenx kits is the one the ENDOZER lacks, so primer-heavy work favors the four-nozzle kits.

Look at the atomizer next. The ENDOZER uses a brass hood with a 15-hole design, stated for uniform atomization; the 2008-4 uses a 15-hole copper atomizer; the 827-4 uses a brass air cap with a stainless steel needle and nozzle. All three are stated for smooth, even spraying, and all three wear stainless nozzles that resist wear from abrasive coatings. The 2008-4 adds stated spray figures: a 240mm spraying width with a 170 to 240mm pattern range, the only pattern numbers in these listings.

Consider the controls on the gun. The ENDOZER lists fluid control for paint volume, pattern control for fan size and an air valve for airflow, plus a pressure gauge in the box. The 827-4 and 2008-4 do not itemize their controls the same way, so compare on what is stated: the ENDOZER is the only one of the three that ships a pressure gauge and a quick adapter in the box. If you want to dial the gun in without buying extras, that matters.

Buying advice: air supply, cups and cleanup

Size the compressor to the gun’s stated air demand. The 2008-4 is the only listing that states figures: 275 L/min air consumption at 2.5 to 3.5 bar working pressure, with a 1/4-inch NPT inlet and a 40 PSI maximum. The ENDOZER and 827-4 state no consumption figures, so the 275 L/min number is the one concrete sizing input in this group. If your compressor cannot hold it, the pattern goes weak and the finish suffers.

Weigh the transfer claims as the makers’ claims. The 827-4 lists paint utilization up to 60 percent to reduce pollution; the 2008-4 lists up to 65 percent transfer efficiency and says it can save 20 percent of paint. Both are maker-stated figures with no stated measurement conditions, so treat them as marketing direction rather than measured fact: higher claimed transfer means less paint in the air, but the numbers are not comparable across brands.

Choose the cup system for your workflow. The ENDOZER and 827-4 use 1000cc aluminum cups for long sessions between refills. The 2008-4 uses a 600cc cup plus 10 disposable liners with lids and a hard cup with a retainer ring; the listing says the disposable system reduces paint waste and saves cup-cleaning time. If you spray multiple colors in a day, disposables earn their keep; if you spray one coating all day, the big aluminum cup wins.

Count the accessories and the warranty. The ENDOZER box includes a paint filter, pressure gauge and quick adapter set. The 827-4 box includes a cleaning kit, gun lubricant, strainer, measuring cap and replacement seals, and it is the only one of the three with a stated warranty: 1 year. The 2008-4 box includes a brush, wrench, sealing tape and a mixing cup, with no warranty stated. Add it up for your first gun: the kit with the filter, gauge and warranty needs the fewest extra purchases.

The three guns, ranked

1. ENDOZER H827-Set. The kit pick: 1000cc gravity cup, 1.4/1.7/2.0mm stainless nozzles, brass 15-hole hood, fluid/pattern/air controls, pressure gauge and quick adapter included. No warranty is stated.

2. Zeinlenx 827-4. The four-nozzle pick: 1000cc cup, 1.4/1.7/2.0/2.5mm nozzles, brass air cap, up to 60% transfer, 1.35 kg, with a stated 1 year warranty.

3. Zeinlenx 2008-4. The disposable-cup pick: 4 nozzles, 600cc cup plus 10 disposable liners, up to 65% transfer, 2.5-3.5 bar and 275 L/min stated. No warranty is stated.

Frequently Asked Questions

Which is better for beginners?

Gravity feed: the cup on top needs less air pressure and wastes less paint, and all three listings here are gravity feed HVLP guns.

What nozzle for primer vs clear coat?

The 827-4 ships with 1.4mm pre-installed and three extra nozzles up to 2.5mm; the 2008-4 listing names base coat, clear coat and primer among its uses.

Do these need a compressor?

Yes. All three are air-powered; the 2008-4 states 275 L/min air consumption and 2.5-3.5 bar.

Which states a warranty?

The Zeinlenx 827-4 at 1 year. The other two state no warranty term.

Related: our best HVLP spray gun for automotive paint picks, the best HVLP spray gun for beginners and how to use an HVLP spray gun.