Graco 101970 Pipe Plug – Overview & Compatibility
Compatible Machines
The Graco 101970 Pipe Plug is used across multiple GH “Big Rig” hydraulic systems. Confirm against your unit’s parts diagram before ordering.
- Graco GH733
- Graco GH833
- Graco GH933
- Graco GH2570
- Graco GH5040
Product Summary
Genuine Graco 101970 Pipe Plug — a headless 1/4"-18 NPT plug used to seal unused ports in hydraulic or fluid manifolds for professional sprayer assemblies. The low-profile, flush design helps prevent interference in tight layouts and supports leak-free, pressure-holding performance.
Key Specifications
| Part Number | 101970 |
| Thread | 1/4"-18 NPT (male) |
| Head Style | Headless (flush-fit/low profile) |
| Typical Use | Seals unused hydraulic / fluid ports on GH-series sprayer manifolds and related assemblies |
| Fitment Note | Appears in GH-series OEM kit and parts lists; always verify against your exact model/serial parts diagram |
Why Choose This Plug
- Flush, headless design minimizes interference around hoses and fittings
- Correct 1/4"-18 NPT thread spec for GH-series hydraulic/manifold ports
- Supports leak prevention and reliable pressure holding
- OEM part ensures proper fit and serviceability
Installation Tips
- Clean and inspect port threads before installation
- Use an appropriate thread sealant compatible with the sprayed material
- Tighten to manufacturer-recommended torque; do not over-tighten
- Re-check for leaks after first pressurization
Frequently Asked Questions
The plug uses 1/4"-18 NPT male threads for sealing unused hydraulic/fluid ports.
Yes. It is a headless style plug designed to sit low and flush, helping in tight manifold areas.
It appears in GH-series parts/OEM kit diagrams, including GH733, GH833, GH933, GH2570, and GH5040. Always verify against your unit’s parts list for exact placement and quantity.
Use of non-OEM plugs is not recommended. OEM parts help ensure fit, corrosion resistance, and correct sealing geometry for high-pressure systems.
Clean threads thoroughly, apply a compatible thread sealant sparingly, torque appropriately, and verify for leaks after pressurizing the system.
