Graco 288858 Air Valve Repair Kit - Aftermarket Replacement | Bedford 20-3325

Restore smooth cycling on pneumatic pump air motors with this service kit. It replaces Graco 288858 and is cross-referenced by Bedford Precision as 20-3325, supplying poppets, grommets, lock wire, and hardware used across Fire-Ball, Monark, and President families.

Aftermarket Precision-Machined Industrial Duty

Why Choose This Air Valve Repair Kit

  • Matches the OEM stack and components used on Fire-Ball, Monark, and President air motors for reliable start/stop.
  • Includes valve poppets, grommets, lock wire, and nuts to refresh sealing and shift action in one service.
  • Cost-effective aftermarket alternative to the OEM assembly.

    Service cue: Replace both inlet and exhaust poppets at the same time to keep air timing balanced after rebuild.

Typical Compatibility

  • Graco Fire-Ball air motors (e.g., 300/425 series used on oil and grease pumps).
  • Graco Monark pneumatic pump air motors.
  • Graco President air motors used on finishing and fluid transfer systems.

Confirm against your pump’s Illustrated Parts List for the exact model and ratio before ordering.

What This Product Fits

  • Fire-Ball air motors and pump packages referencing the air valve kit in their IPL (common on 300/425 variants).
  • Monark air motors where the parts list specifies the kit number shown below.
  • President air motors in finishing and transfer applications listed with the same kit.
  • Aftermarket cross-reference: Bedford Precision 20-3325 for the OEM kit.

If your model or ratio is not listed explicitly, match by the OEM part number in your manual to ensure interchangeability.

Technical Specifications

AftermarketBedford 20-3325
OEM 288858 (Air Valve Repair Kit).
FitsGraco Fire-Ball, Monark, and President air motors; see pump IPL for confirmation.
TypeAir motor valve repair kit (inlet/exhaust poppets, grommets, hardware).
MaterialMetal poppet valves with elastomer grommets and steel lock wire (per kit contents).
FunctionRefreshes the air valve to improve shifting, priming, and steady pump cycling.
PressureUse within your pump’s published air pressure range; follow the model’s manual.
BrandBedford Precision Parts (Aftermarket).

System limits are set by the lowest-rated component in your installation.

Installation Notes

  1. Shut off and bleed air pressure; lock out energy per your pump manual.
  2. Remove air motor cover; note orientation of poppets, grommets, and lock wire.
  3. Clean valve bores and seats; remove debris that can affect timing.
  4. Install new grommets and poppets from the kit; secure with lock wire and adjust nuts to spec.
  5. Reassemble, apply air slowly, and verify smooth reciprocation with no sticking before returning to service.

Tip: Inspect mufflers and air supply filtration—oil or particulates can shorten air valve life and cause slow shifting.

When to Rebuild / Replace

  • Intermittent cycling or stalls at stroke reversal.
  • Air leakage from exhaust with the motor idle.
  • Slow startup after connection even with clean supply air.
  • Poppet wear, damaged grommets, or distorted lock wire found during inspection.

Bedford vs OEM Comparison

FeatureBedford Aftermarket (20-3325)OEM (Graco)
Fit & InterfaceMatches air valve layout used on Fire-Ball, Monark, President motorsFactory air valve kit 288858
ComponentsPoppets, grommets, lock wire, and nuts per kit contentsOEM-specified components and quantities
Working PressureFollow pump’s published air pressure ratingDefined by each model’s service manual
AvailabilityIf in stock, ships from Bedford Precision Parts in Bedford Hill, New York.Ships via Graco distribution
ValueCost-effective service solutionOEM program

Kit contents and compatibility validated against Graco literature and Bedford cross-reference listings.

FAQs

Yes. Bedford 20-3325 is an aftermarket alternative cross-referenced to the Graco 288858 air valve repair kit. :contentReference[oaicite:24]{index=24}
Fire-Ball, Monark, and President air motors used on many Graco pump packages. Check your Illustrated Parts List to confirm. :contentReference[oaicite:25]{index=25}
Poppet valves (inlet/exhaust), grommets, lock wire, and nuts—quantities per the service bulletin. :contentReference[oaicite:26]{index=26}
Bleed air pressure, clean the bores, replace both poppets, and verify free cycling at low air pressure before returning to use. :contentReference[oaicite:27]{index=27}
If available, orders ship from Bedford Precision Parts in Bedford Hill, NY using your selected carrier/service.