Compatibility & Key Details for Graco 100840
Use this section to quickly confirm where the Graco 100840 street elbow fits and what it does.
Compatible Machines
Referenced by reputable parts distributors as used on the following Graco rigs/series (always confirm with your machine’s parts manual before ordering):
- Graco R1 E20
- Graco R1 E30
- Graco EXP1 / EXP2
- Graco GH2 / GH4
- Graco R2 & R3 Series machines
- Graco Xtreme PFP rigs
What is Graco 100840?
Graco 100840 is a 90° street elbow fitting used in air/fluid plumbing on compatible Graco spray & foam systems. It provides a compact right-angle turn with one male and one female NPT port to simplify tight routing at manifolds, regulators, or outlet blocks.
Features & Specifications
| Part Number | 100840 |
| Type | Elbow, Street (90°) |
| Thread Size | ¼″ NPT Male × ¼″ NPT Female |
| Typical Use | Manifolds, outlet blocks, and tight-radius plumbing on compatible Graco machines |
| Notes | Verify orientation and port sizes against your unit’s schematic before installation |
Application & Install Notes
- Match NPT sizes (¼″ M × ¼″ F) and confirm the fitting position on your machine diagram.
- Use an appropriate thread sealant (compatible with your fluid/air) and avoid over-torque to protect threads.
- When replacing an existing elbow, confirm the stamped/boxed part number is 100840.
- After installation, pressure test and inspect for leaks before returning the rig to service.
Frequently Asked Questions
The fitting is ¼″ NPT Male × ¼″ NPT Female in a 90° street-elbow configuration.
Distributors reference compatibility with R1 E20/E30, EXP1/EXP2, GH2/GH4, R2 & R3 series, and Xtreme PFP rigs. Always verify against the official parts manual for your exact model and build configuration.
It is commonly used in air or fluid plumbing depending on the specific machine location (e.g., manifolds/outlet blocks). Follow your unit’s service schematic for the exact circuit.
Use the correct thread sealant, align to avoid cross-threading, tighten to spec, and leak-test after pressurizing. Re-check after the first use cycle.
