Graco 223565 Piston Valve (SS) - Aftermarket Replacement | Bedford 58-2306

This stainless-steel piston valve restores positive sealing and smooth fluid control in Graco high-output rigs. It is a direct aftermarket alternative to OEM 223565, supplied as Bedford 58-2306, and is used on heavy-duty sprayers like GH433 and President 30:1 pumps for reliable prime/spray performance.

Aftermarket Precision-Machined Industrial Duty

Why Choose This Piston Valve

  • Stainless-steel construction for corrosion resistance and long service life.
  • Built to OEM geometry for consistent seating, flow, and pressure stability.
  • Ideal for heavy coatings and high-duty cycles typical of road/industrial rigs.

Finish cue: Functional components present a steel grey appearance (non-cosmetic internal part).

Typical Compatibility

  • Graco GH433 hydraulic sprayers (piston pump assemblies).
  • Graco President 30:1 pneumatic pumps used in ram/transfer systems.
  • Graco EH433 sprayers per Bedford quick reference cross-listing.

Confirm by model/serial and parts manual before ordering.

What This Piston Valve Fits

  • GH433 (Graco hydraulic line-striping/contractor rigs).
  • President 30:1 (pneumatic pump packages).
  • EH433 (per Bedford reference).

Alternate/superseding references may appear in specific kit bills of materials.

Technical Specifications

Aftermarket Bedford 58-2306
OEM 223565 (Piston Valve, Stainless Steel)
FitsGH433, President 30:1, EH433 (verify by manual).
TypePiston valve / check valve component for fluid section
MaterialStainless steel body & seat geometry (wear-resistant finish)
FunctionProvides sealing/flow control for prime & spray cycles
PressureUse within the pump’s rated working pressure (per model manual)
BrandBedford Precision Parts (Aftermarket)

Cross-reference confirmation available on Bedford and distributor listings.

Installation Notes

  1. Lock out air/hydraulic power, relieve fluid pressure, trigger gun to verify zero pressure.
  2. Disassemble fluid section per service manual; note valve orientation and stack order.
  3. Clean bore and mating surfaces; lightly lubricate with compatible assembly oil.
  4. Install the piston valve with correct facing; torque fasteners to spec.
  5. Prime at low pressure and check for leaks before returning to service.

Pro tip: Replace packings and check balls/seats together when a valve shows bypass or pulsation—this prevents premature rework.

When to Rebuild / Replace

  • Loss of prime, cavitation, or air entrainment not explained by supply issues.
  • Pulsing pressure or inconsistent spray despite normal pump RPM/air.
  • Visible seat damage, pitting, or scoring on the stainless surface.
  • Frequent tip clogs traced to valve shedding or incomplete sealing.

Bedford vs OEM (Graco) Comparison

FeatureBedford Aftermarket (58-2306)OEM (Graco)
Fit & InterfaceMatches OEM dimensions for GH433/President assembliesFactory Graco piston valve spec
MaterialStainless steel, wear-resistant finishStainless steel to OEM spec
AvailabilityIf in stock, ships from Bedford Precision Parts in Bedford Hill, New York.Ships via Graco distribution
ValueLower total cost vs OEMOEM brand program

FAQs

Yes. It is listed as the aftermarket equivalent for GH433, President 30:1, and EH433 models—verify by your pump manual.
Commonly GH433 hydraulic sprayers, President 30:1 pneumatic pumps, and EH433 units. Model configurations vary—confirm your assembly number.
Stainless steel (SS) for corrosion resistance and consistent sealing performance.
Always relieve pressure, follow torque specs, and rebuild seals as a set. Prime at low pressure and leak-check before production spraying.
If in stock, orders ship from Bedford Precision Parts in Bedford Hill, NY via your chosen carrier.