Graco 16X806 Hinge Valve Cap

Small part, big impact: the 16X806 Hinge Valve Cap keeps handheld sprayers sealed, primed, and job-ready.

What the part does

On Graco handheld cup systems, the hinge/valve cap is a tiny but crucial component. It helps the cup manage pressure changes while you prime and spray, so material feeds smoothly and air stays out of the fluid path. When the cap cracks, hardens, or goes missing, the sprayer can “hunt” for prime, spit during strokes, or pull air that spoils your finish. Replacing the cap restores the seal in seconds—no tools, no guesswork.

Confirmed compatibility

The 16X806 is used in Magnum A5 Compact and TrueCoat 360 handhelds. It also fits TrueCoat models—16Y385 (360), 17A466 (360 DS), 16Y386 (360 DSP), and 17D889 (360 VSP)—giving you a clear, cross-referenced fit map. If you’re stocking caps for a mixed fleet, Graco’s Q&A further notes that the VacuValve three-pack (17P712) is simply three of this same 16X806 cap. 

Why timely replacement matters

A compromised cap allows air to back-feed into the cup, forcing you to reprime and increasing the chance of spatter near edges and trim. Beyond finish defects, persistent air ingestion accelerates wear on check components and can push debris toward the tip seat. Swapping a fresh cap is inexpensive insurance that preserves productivity especially when crews are cycling colors or doing touch-ups between rooms.

Two ways to stock

• Single 16X806 — Ideal when you’re replacing a lost or damaged cap on one unit.
• **17P712 three-pack** — Efficient for contractors; keep one cap with each handheld to avoid mid-shift parts runs. 

Installation in under a minute

1. Turn the sprayer off and relieve pressure per your manual.
2. Remove the worn cap; inspect the mating surface for dried coating.
3. Press the new hinge/valve cap into place until fully seated; verify a snug fit.
4. Prime, then test on cardboard for a steady fan before returning to the wall.

Best practices for finish quality

Pair a fresh cap with clean liners and the correct mesh gun filter for your coating. Keep tip sizes matched to your target fan and viscosity, and log cap replacements on the tool so techs know when it was last serviced. These small habits prevent nuisance callbacks and keep crews moving.

Where this part fits in your stocking plan

Handhelds shine on trim, doors, railings, and quick exterior touch-ups—but only when they’re ready to prime on the first try. Add the 16X806 to your consumables list alongside liners, tip seats, and O-rings. If you manage multiple Graco handheld sprayers, standardize a bin for caps and label by model family to simplify kitting for each job.

Answers at a glance

• Is this the same as the “VacuValve cap”? Yes—16X806 is the single cap; 17P712 is the three-pack of the same item. 
• Which machines are confirmed? Magnum A5 Compact; TrueCoat 360, 360 DS, 360 DSP, 360 VSP. 
• Typical failure signs? Slow or failed priming, leaks at the cup, and intermittent spitting.

Why buy genuine

Genuine caps are molded to the right durometer and geometry so they seal reliably and last longer. Off-spec copies can loosen, leak, or deform under solvents—costing you time and material. When you’re counting on a handheld to punch above its weight, stick with OEM reliability and verified fit.

Order with confidence

Add the Graco 16X806 Hinge Valve Cap to your cart today. With the right small parts on hand, your handhelds prime faster, spray cleaner, and deliver the finish you promised—job after job.

VacuValve, Graco handheld sprayers, Graco parts, paint sprayer parts