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Graco 166208 Restrictor

The Graco 166208 Restrictor is the calibrated insert for Restrict-A-Flo valves, used to control fluid flow for stable spray performance.

  • Function: Limits flow with a precise orifice to stabilize pressure
  • Used with: Housing 166206 and nut 166209 (Restrict-A-Flo assembly)
  • Fit rule: If your parts diagram shows “Restrict-A-Flo,” this insert applies
  • Includes: Restrictor insert only (no housing, nut, or seals)
  • Check: Verify in your model’s schematic before ordering

$178.6
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Flow Control Overview & Compatibility

Compatible Machines

Use the list below as a quick rule: if your sprayer’s parts diagram shows a “Restrict-A-Flo” valve, this part applies.

  • Graco sprayers and systems that use the Restrict-A-Flo valve assembly (housing 166206 / nut 166209)

The Graco 166208 Restrictor is the calibrated insert used inside Graco’s Restrict-A-Flo valve assembly to limit and stabilize flow for consistent spray performance.

Product Details

Part Number 166208
Assembly Context Restrict-A-Flo valve (insert used with housing 166206 and nut 166209)
Function Creates a calibrated orifice to control/limit fluid flow and help maintain stable pressure
Typical Location Inline valve/manifold area shown in the machine’s parts breakdown as “Restrict-A-Flo”
What’s Included Restrictor insert only (no housing, nut, or seals)

Installation & Notes

  • Depressurize equipment and follow the service manual for your exact model.
  • Inspect related valve components (housing, nut, seals) and replace worn parts together for best results.
  • If your schematic does not show a Restrict-A-Flo valve, this restrictor is not applicable to that model.

Frequently Asked Questions

It provides a precise passage for the fluid, limiting flow to stabilize pressure and spray pattern. Without it, flow can surge and cause uneven atomization or downstream component wear.

Open your model’s parts diagram and look for a Restrict-A-Flo valve. If present, note the associated items—housing 166206 and nut 166209—then match the restrictor part number to 166208.

Common signs include unstable pressure, irregular fan pattern, excessive flow to the gun, and accelerated wear on downstream components. Replace the insert if the orifice is worn or damaged.

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