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Graco 165964 Packing Nut

The Graco 165964 Nut, Packing securely compresses valve or throat packing to prevent fluid leaks and ensure proper sealing in Graco pump and valve assemblies.

  • OEM part number: 165964 (also noted as 165-964)
  • Used in ball valve and mixer manifold assemblies
  • Replaces Bedford Precision part 12-1396
  • Ensures leak-free stem and rod operation

$52.25
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Overview & Compatibility – Graco 165964 Nut, Packing

Compatible Assemblies & Models (from Graco manuals)

This OEM Nut, Packing (PN 165964 / 165-964) appears in the factory parts lists for the following Graco components and assemblies. Always verify against your sprayer’s exact pump/valve schematic.

  • Graco Ball Valve Models: 26A068, 26A078
  • Graco Ball Valve Models referenced with shared subcomponents: 235992, 248271, 238694
  • Graco Plural Component Mixer Manifold Assembly (manual ref. 307400 series)

What this part does

The 165964 is the packing retaining nut used to compress and secure valve or throat packing around a stem/rod in Graco fluid sections and related assemblies, helping to control leakage and maintain correct sealing force.

Key Specifications

Graco Part No. 165964 (also shown as 165-964 in older documents)
Description Nut, Packing (valve / throat packing retainer)
Typical Location Ball valve assemblies and mixer/manifold assemblies; may appear in fluid sections that use a stem packing stack
Aftermarket Cross Bedford Precision 12-1396 (direct replacement)
Notes Match thread and assembly drawing for your exact model; do not interchange with visually similar nuts

Fitment & Use Notes

  • Verify by schematic: Check your sprayer’s valve/pump exploded view to confirm PN 165964 is called out for your exact revision.
  • Avoid over-tightening: Tighten only to the specification or “snug + minor turn” noted in your model’s repair manual to prevent thread damage and packing distortion.
  • Service together: When replacing the nut, inspect the packing set and related spacers/O-rings; replace worn items to fully resolve leaks.
  • TSL practice (where applicable): Some systems call for filling the packing area with Graco TSL after adjustment; follow the instruction manual for your model.

Where it commonly appears

  • Graco ball valve assemblies used in plural-component and high-pressure paint transfer circuits
  • Plural Component Mixer Manifold (select configurations list 165-964 in the parts table)

Frequently Asked Questions

Open the official parts manual for your exact model and revision. In the valve/manifold or pump section, look for the packing nut callout; it should list 165964 (or 165-964). If a different number is shown, match that part instead.

Yes—Graco documentation may show a hyphenated style (165-964). It refers to the same OEM packing nut. Use the style shown in your manual when searching.

Clean threads, seat the packing stack correctly, install the nut, then tighten per your manual. After reassembly, cycle the system at low pressure and check for leaks. Where specified, add TSL to the packing area and recheck after initial run-in.

Bedford Precision lists a direct replacement as 12-1396. Use OEM when under warranty or when required by spec; otherwise confirm dimensions and fit before installing an aftermarket part.

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