Devilbiss GPG Gravity Spray Gun (successor of Devilbiss GPI)

The Devilbiss GPG spray gun is the successor to the Devilbiss GPI. With its 1.4 mm nozzle size, it is a cost effective general purpose spray gun for enamels, primers and 2K paints.

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Model Description

Manufacturer: Devilbiss
Model: GPG-GPG1-14-C
GPG – gun model
– air cap type
18 – nozzle size

Technical Specifications

Nozzle/Needle Material: stainless steel
Nozzle Sizes:
1.4 mm
Air Cap Type: GP1
Atomization Technique: i-system
Air Inlet Pressure (recommended): 2 bar [29 psi]

Fluid Flow: 180-280 ml/min [0.048-0.074 gpm]
Pattern Length: 280-320 mm [11.0-12.6 in]
Air consumption: 270 lpm [71.3 gpm]
Material: plated brass
Gun Weight: 683 g [1.5 lbs]
Cup Capacity: 560 ml [18.9 oz.]
Air Supply Connection: Universal 1/4″ (fits 1/4″ BSP and 1/4″ NPS)


The GPG Spray Gun of Devilbiss can be considered as a cost-effective general purpose spray gun for automotive refinishing.


General purpose applications around the bodyshop, incl. enamels, synthetics, primers and 2 pack commercial paints.

Service Manual/Parts Breakdown

Devilbiss GPG manual (source: manualslib)

FAQ: What is the difference between Devilbiss GPI and GPG spray gun?

The Devilbiss GPI spray gun was launched as a typical primer spray gun, available only in 1.6 mm and 1.8 mm nozzle sizes. Due to its good performance, Devilbiss later launched the Devilbiss GPG spray gun, basically on top of it. But this time as a ‘full-fledged’ spray gun, i.e. nozzle sizes ranging from 1.2 mm to 2.5 mm and seven (7) different air caps to cover conventional, high efficiency and HVLP atomization. Other spare parts are also available.


(not included)

Repair/Rebuild Kit: 905279 (not included)
Disposable Cup Adapters:
3M PPS 2.0 #S03 – 26033 (not included)
Sata RPS #3 – 125252 (not included)
Devilbiss DeKups DPC-43 (not included)

Additional information



Atomizing technology


Nozzle size