Graco 220631 Piston Valve - Aftermarket Replacement | Bedford 58-1938

Maintain steady flow and spray pressure in professional airless systems. This aftermarket piston valve replaces OEM 220631 with Bedford reference 58-1938, supporting clean check action and reliable prime on compatible sprayers.

AftermarketPrecision-MachinedIndustrial Duty

Why Choose This Piston Valve

  • Restores check action to stabilize pressure and pattern quality.
  • Hardened seat geometry for a long service window.
  • Direct interchange dimensionally with the OEM reference for quick service.

Finish & color: Bright machined steel with neutral seal accents.

Typical Compatibility

  • Ultra 1500 / Ultra Plus 1500 / Ultimate 1500 Series.
  • GM 5000 and GM 10000 contractor sprayers.
  • LineLazer 5000 stripers using this fluid-section design.

Confirm by part number in your model’s IPL before ordering.

What This Product Fits

  • Graco Ultra 1500 / Ultra Plus 1500 / Ultimate 1500 Series.
  • Graco GM 5000 and GM 10000 platforms.
  • Graco LineLazer 5000 pavement striper.

These models are widely listed for this valve in distributor catalogs and parts stores.

Technical Specifications

Aftermarket Bedford 58-1938
OEM Graco 220631
FitsUltra 1500 family; GM 5000/10000; LineLazer 5000
TypeFluid-section piston valve (check element)
MaterialPrecision-machined steel with hardened interface
FunctionControls flow and supports pressure stability through the pump cycle
PressureUse within sprayer’s rated working pressure
BrandAftermarket by Bedford Precision Parts; replaces Graco OEM

Installation Notes

  1. Relieve system pressure and isolate power per manual.
  2. Disassemble the fluid section; note valve orientation.
  3. Clean seat/cage; replace worn balls or cages as required.
  4. Install the piston valve; torque to specification.
  5. Prime at low pressure and leak-check before production.

Real tip: Replace mating ball/cage components together to maintain sealing symmetry.

When to Rebuild / Replace

  • Slow pressure build or pulsation at the gun.
  • Backflow or difficulty holding prime after shutdown.
  • Visible pitting, scoring, or stuck check elements.
  • Frequent pattern instability despite filter/tip checks.

Bedford vs OEM Comparison

FeatureBedford Aftermarket (58-1938)OEM (Graco)
InterchangeDimensional replacement for the OEM referenceFactory original component
BuildPrecision-machined steel, service focusedOEM-specified construction
FitmentUltra 1500; GM 5000/10000; LineLazer 5000Ultra 1500; GM 5000/10000; LineLazer 5000
AvailabilityIf in stock, ships from Bedford Precision Parts in Bedford Hill, New York.Ships via Graco distribution

FAQs

Yes. This piston valve is an aftermarket alternative to the OEM reference shown in the specifications.
Ultra 1500 family, GM 5000/10000, and LineLazer 5000 models that list the OEM reference in their IPL.
Work clean, verify orientation, and seat the valve on a clean surface. Prime slowly and confirm seal integrity before use.
Machined steel with a hardened interface to support long wear in airless duty.
If available, orders ship from Bedford Precision Parts in Bedford Hill, NY using your selected carrier/service.