Graco 121688 Connector 3/8" T x 3/8" NPT
$24.80
In Stock
A durable Graco connector for linking 3/8″ tube to 3/8″ NPT ports in XM plural-component sprayers. Ideal for secure, leak-resistant fluid routing.
- Part #: 121688
- 3/8″ NPT (F) × 3/8″ Tube (M)
- Compatible with XM, XM50™, XM70™ & XM-OEM systems
- Metal construction for high-pressure fluid lines
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Graco 121688 | 3/8″ T × 3/8″ NPT Connector
This Graco 121688 connector is a compact, threaded fitting designed to link 3/8″ fluid tube to a 3/8″ NPT port — ideal for fluid control systems in Graco plural-component sprayers.
Compatible Machines
The 121688 connector is used in various Graco **XM Plural-Component** sprayer systems, including:
- Graco **XM-OEM** Sprayers (e.g., XMEA, XMED, XMF, XMFD, etc.) :contentReference[oaicite:0]{index=0}
- Graco **XM Plural-Component (PFP)** Sprayers :contentReference[oaicite:1]{index=1}
- Graco **XM70™** Plural Sprayer series :contentReference[oaicite:2]{index=2}
- Graco **XM50™** Plural Sprayer series :contentReference[oaicite:3]{index=3}
Technical Specifications
| Part Number | 121688 |
|---|---|
| Connection A | 3/8″ NPT (female) |
| Connection B | 3/8″ Tube (male) |
| Material | Metal connector (durable for fluid systems) |
| Application | Fluid line in two-component spray systems (e.g. Graco XM) |
Benefits & Use Cases
- Enables secure fluid-line connections where 3/8″ tubing meets NPT ports
- Used in high-precision plural-component systems for reliable fluid routing
- Compact and robust, suited for tight installations inside pump/control modules
Installation Guidelines
- Ensure the NPT port and the 3/8″ tube are clean before connecting.
- Use a compatible thread sealant or PTFE tape on the NPT side to prevent leaks.
- Tighten by hand, then use a wrench — avoid over-torquing to prevent damage.
- After installation, perform a pressure test to verify there are no leaks.
Frequently Asked Questions
It links 3/8″ fluid tubing to a 3/8″ NPT thread, enabling fluid flow between the system’s components in Graco plural-component (XM) sprayers.
Yes — it appears as “121688 CONNECTOR, 3/8 npt × 3/8 tube” in the Graco XM OEM sprayer parts list. :contentReference[oaicite:4]{index=4}
Use a compatible thread sealant or PTFE (Teflon) tape rated for fluid systems. Make sure it’s safe for the fluids you’re using.
Yes, it’s designed for use in high-pressure plural-component systems like Graco XM sprayers. But always check your system’s maximum working pressure in the manual.
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