Graco 163831 Silver Flat Tip, 831

The Graco 163831 Silver Flat Tip (831) delivers a controlled flat fan for architectural/industrial coatings. Verify your gun and guard before purchase.

Orifice: 0.031″ (high-flow applications)
Fan Width: ~16–18″ (varies by pressure & material)
Required Guard: 220251 (7/8″ thread)
Max Pressure: up to 5000 psi (use lower rated component limit)
Fit Check: Guns with 7/8″ tip/guard threads that accept Silver Flat Tips

Retail Price: $52

You save: $15.6 (30.00%)

Our Price: $36.4

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Description

Key Details & Compatibility Guidance

Compatible Machines

Use this list to quickly check fit. Always verify your gun/tip guard before purchase.

Graco airless sprayers whose guns accept 7/8″ tip thread and use the Flat Tip Guard 220251.
Sprayers capable of high pressure (up to around 5000 psi) commonly used for architectural & industrial coatings.
Systems outfitted with Silver Plus–style airless guns or equivalent that are designed for Silver Flat Tips.

About Graco 163831 Silver Flat Tip, 831

The Graco 163831 Silver Flat Tip (831) is a precision flat airless tip designed for smooth, controlled fan patterns on a wide range of architectural and industrial coatings. It requires the matching Flat Tip Guard 220251 for proper installation and safety.

Specifications

Graco Part	163831 – Silver Flat Tip, 831
Orifice Size	0.031 in (approx.)
Fan Width*	Approx. 16–18 in (at 12 in distance; varies by pressure & coating)
Max Working Pressure	5000 psi (approx.; follow sprayer/gun limits if lower)
Tip Style	Silver Flat Tip (flat pattern)
Required Guard	220251 Flat Tip Guard (7/8″ thread)
Thread Interface	7/8″ tip/guard thread (standard on many Graco airless guns)

*Fan width is influenced by pressure, viscosity, and spray distance.

Quick Fit & Use Notes

Confirm your gun uses a 7/8″ guard and install with the 220251 guard.
Match the 0.031″ orifice to your coating’s viscosity and desired production rate.
Never exceed the lower of your sprayer, hose, or gun’s rated pressure.

Frequently Asked Questions

Fit depends on your spray gun & guard. If your gun accepts 7/8″ threaded guards and you use the 220251 Flat Tip Guard, this Silver Flat Tip, 831 will typically fit. Check your gun/sprayer manual to confirm.

Flat tips are commonly used for a controlled, uniform fan on architectural and light-industrial coatings. Match the 0.031″ orifice to medium-to-heavier materials and adjust pressure to achieve proper atomization without excessive overspray.

Yes. Install with the 220251 Flat Tip Guard. Using the correct guard ensures safety, proper sealing, and correct fan geometry.

You can still use the tip as long as your system is compatible, but performance (atomization/fan) should be tuned to your sprayer’s limits. Always operate within the lowest rated component in your setup (sprayer, hose, gun, or tip guard).