The Graco 100122 Nipple, Close is a durable ½" NPT male-to-male pipe fitting designed for tight, leak-free connections in Graco fluid and air systems.
The Graco 100122 Nipple, Close is a compact, straight, male-to-male pipe fitting used to connect two female-threaded ports with minimal exposed length. In Graco equipment, it commonly appears in fluid and air manifolds, rams, and proportioner modules where a tight, rigid connection is required.
| Part Number | 100122 |
|---|---|
| Description | Nipple, Close (male-to-male straight close nipple) |
| Thread Type / Size | 1/2" NPT (male) both ends (as specified in Graco service manuals) |
| Typical Use | Rigid, space-saving connection between two female NPT ports in proportioners, ram-mounted pumps, and extruder assemblies. |
| Material | Steel fitting (standard Graco pipe-fittings spec) |
| Question | Answer |
|---|---|
| What does “close” mean in Nipple, Close? | It indicates minimal body length—threads run nearly the full length so two female ports can be joined with little or no gap. |
| Is 100122 the same as a generic 1/2" NPT close nipple? | Functionally similar, but Graco 100122 is specified in Graco manuals and ensures correct fit within listed assemblies. |
| Which Graco machines list it explicitly? | Ram-Mounted Pumps (e.g., models 234120/234121), 8900 Proportioner modules (incl. 20:1 President on 55-Gallon Ram), and the 1:1 Extruder (kit 570135). |
| What thread sealant should I use? | Use an NPT-compatible sealant suitable for your material (e.g., water-borne, solvent-borne, or plural-component). Follow Graco and sealant manufacturer guidance. |
| How do I confirm compatibility for other models? | Check your unit’s parts list; if it specifies 100122, it’s a direct fit. If a different size/part is listed, use that exact part number. |
