Graco 113032 Adapter Overview
The Graco 113032 1/4″ × 1/2″ NPT Adapter is a precision component designed to provide a secure, leak-proof connection in high-pressure fluid systems. By converting between 1/4″ and 1/2″ NPT threads, it adapts hoses, valves, or manifolds with different port sizes. It is ideal for integration in airless sprayers, ram systems, and other industrial coating applications.
Key Features
- Durable construction: made from brass (or OEM-grade metal) for corrosion resistance and long life
- Precision threads: 1/4″ NPT to 1/2″ NPT — ensures a tight, leak-resistant seal
- High-pressure rated: designed for demanding fluid delivery in commercial and industrial spray systems
- Compact size: easy to install and remove; minimizes downtime
Applications
This adapter is used in fluid delivery systems where a smaller (1/4″) line must connect to a larger (1/2″) NPT port, without losing pressure performance. Typical use-cases include:
- Airless sprayer setups
- Ram (air-powered) pump bases
- High-pressure coating systems (e.g., urethane, latex, industrial coatings)
- Maintenance or retrofit work on legacy Graco equipment
Technical Specifications
| Specification | Detail |
| Thread Sizes | 1/4″ NPT ↔ 1/2″ NPT |
| Material | Brass (OEM grade) |
| Typical Pressure Rating | High-pressure (fits in Graco ram and sprayer systems) |
Compatible / Known Machines
The Graco 113032 adapter is referenced in Graco ram and air-control system parts diagrams. Below are some of the **known machine contexts** where it is used:
- Graco Air-Powered Ram Base & Air Cylinder (see parts list, manual 306934)
- Graco systems using the 237999 Air Control Conversion Kit (the adapter is used to connect control-valve ports)
- Ram units in Graco general-industry supply systems (as shown in Graco parts/instruction manuals)
Installation & Maintenance Guidelines
- Use a **PTFE thread sealant** or compatible tape on the NPT threads to ensure a leak-free installation.
- Tighten using a torque wrench; avoid over-tightening to prevent thread damage.
- Inspect regularly for wear or corrosion, especially in high-cycle or high-pressure systems.
- When disassembling, clean threads and re-apply sealant before reassembly to maintain seal integrity.
Frequently Asked Questions
Graco does not publish a specific “PSI max” for the 113032 adapter in all sources, but it is used in **ram systems** and **high-pressure sprayers**, indicating it is rated for significant pressures. Always refer to your machine’s manual and part-specifications for safe operating limits.
While the primary use is for fluid (coatings, paint) lines, the 113032 has also been referenced in **air control assemblies** (e.g., in the 237999 conversion kit), so it may serve in both contexts depending on your setup.
Technically, a generic 1/4″ × 1/2″ NPT adapter might work, but **using the genuine Graco 113032** ensures better thread-fit, material compatibility, and preserves OEM tolerances—especially important in high-pressure systems. Using non-OEM parts could risk leaks, wear, or even void warranty in some systems.
