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Graco 100030 Bushing

The Graco 100030 Bushing is a precision adapter that connects 1/4" male to 1/8" female NPT fittings, ensuring leak-free connections in air or fluid systems. Ideal for guns, pumps, and proportioners.

  • OEM Part: 100030
  • Thread Size: 1/4" M × 1/8" F NPT
  • Used In: GX-7 Guns & E-8p Machines
  • Application: Air / fluid line adapter
  • Material: High-grade metal for durability

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Graco 100030 Bushing — Compatibility & Specs

Compatible Machines

This Graco 100030 Bushing (thread reducer 1/4 M x 1/8 F, NPT) is used where a 1/4" male port must accept a 1/8" female connection. It appears in OEM parts lists for the following equipment families:

  • GX-7 Spray Gun family
  • E-8p proportioner / machine assemblies
  • Other Graco spray rigs or guns that require a 1/4 M to 1/8 F NPT adapter (verify in your model’s parts manual)

What is the Graco 100030 Bushing?

A compact, precision-machined bushing used as a thread reducer/adapter in air or fluid paths on Graco equipment. It converts a 1/4 male NPT port to a 1/8 female NPT connection, helping integrate gauges, valves, hoses, or line components that use smaller 1/8" threads.

Quick Specs

OEM Part Graco 100030Bushing
Thread Type NPT (National Pipe Thread)
Thread Size 1/4" Male NPT → 1/8" Female NPT
Typical Use Adapting ports/fittings in gun, pump, or rig manifolds where 1/8" components must connect to 1/4" ports
Position Varies by model (air line or fluid line interfaces; see your parts diagram)

Fitment Tips & Verification

  • Match both threads: 1/4" NPT (male) side into the body/manifold & 1/8" NPT (female) side for the attached component.
  • Consult your model’s parts manual: look for 100030 in the exploded views to confirm exact location and quantity.
  • Use compatible thread sealant (PTFE tape or pipe dope rated for your material and pressure) as specified by Graco guidelines.
  • Do not over-torque: NPT seals by thread interference; overtightening may crack mating parts or distort the bushing.

Frequently Asked Questions

Check your unit’s parts list or exploded diagram. If it specifies Graco 100030 Bushing or calls for a 1/4 M x 1/8 F NPT reducer at that position, this is the correct part.

Commonly at manifold ports, regulators, gauge take-offs, or gun/rig interfaces where a 1/8" component needs to be adapted to a 1/4" port. Location varies by model (air or fluid side).

Yes—NPT is a tapered thread. Use PTFE tape or a suitable pipe sealant compatible with your coating/foam chemistry and pressure. Avoid contaminating downstream passages.

It appears in parts lists for GX-7 gun assemblies and E-8p machine assemblies. Always confirm against your specific revision/serial parts manual before ordering.

Use the exact size and part number specified. Reducers come in multiple thread sizes; ordering by Graco OEM number (e.g., 100030) avoids mismatch.

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