A-A-50310 Spray Gun, Paint, Heavy Duty Siphon Or Pressure FeedThis commercial item description CID covers the general requirements for two types siphon and pressure feed of air operated, heavy-duty paint spray guns consisting of forged aluminum bodies, paint cups, and carrying cases. Spray guns covered by this CID are intended for commercial/industrial applications.

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INCH-POUND A-A-50310A

19 October 2011

SUPERSEDING A-A-50310

30 May 1990

COMMERCIAL ITEM DESCRIPTION

SPRAY GUN, PAINT, HEAVY DUTY (SIPHON OR PRESSURE FEED)

The General Services Administration has authorized the use of this commercial item description by all federal agencies.

1. SCOPE. This commercial item description (CID) covers the general requirements for two types (siphon and pressure feed) of air operated, heavy-duty paint spray guns consisting of forged aluminum bodies, paint cups, and carrying cases. Spray guns covered by this CID are intended for commercial/industrial applications.

2. CLASSIFICATION/PART OR IDENTIFICATION NUMBER (PIN). This CID uses a classification system which is included in the PIN as shown in the following example (see 7.1).

AA50310 - S001

CID number Dash number

2.1 Type and size. Spray gun types and sizes are classified as shown in table I.

2.1.1 Example of PIN: The PIN AA50310-S001 specifies a type S, siphon feed, size 001.

TABLE I. Spray gun types and sizes

Characteristics	Type
	S (siphon feed)		P (pressure feed)
	Size 001	Size 002	Size 001
Elliptical pattern	1.5 by 7 inches	2 by 8 inches	2 by 9
Round pattern	1.5 inches	2 inches	2 inches
Air pressure, psig 1/	30-50	50-60	55-65
Fluid flow rate, oz./min.	7.25 or more	8 or more	14.5 or more
Air flow rate, cfm 2/	2.2 - 4.0	7.0 - 8.0	7.0 - 8.0
Viscosity, seconds 3/	up to 20	up to 30	25 - 30

1/ Pressure is in pounds per square inch gage (psig).

2/ Air flow is in cubic feet per minute (cfm). Note: The volume of air flow shall be corrected to 29.92 inches of mercury, standard barometric pressure, at +70 °F.

3/ Timed measurements of paint viscosity using a Number 2 Zahn cup at 77 ±5 °F for type S, and a Number 4 Ford

cup at the same temperature for type P.

Beneficial comments, recommendations, additions, deletions, etc., and data that may improve this document should be sent to: DLA, Land and Maritime, ATTN: VAI, P.O. Box 3990, Columbus, OH 43218-3990, or email to FluidFlow@dla.mil . Since contact information can change, you may want to verify the currency of this address information using the ASSIST Online database at https://assist.daps.dla.mil .

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