Graco 116461 – Thermal Valve 1/2″ NPT
Overview
The Graco 116461 Thermal Valve 1/2″ NPT is a temperature-sensitive valve with 1/2″ NPT threaded connection. It’s designed to regulate or automatically control fluid/air flow based on thermal conditions — useful for systems where fluid temperature affects pressure, safety, or fluid properties. This ensures more reliable and safer operation in variable temperature environments. ([official part listing])
Key Features & Functionality
- Thread size: 1/2″ NPT — compatible with standard NPT threaded fluid/air systems. :contentReference[oaicite:3]{index=3}
- Thermal‑valve design — activates or adjusts flow depending on temperature to protect fluid/air systems from overheating or improper flow conditions. :contentReference[oaicite:4]{index=4}
- Compact, threaded valve suitable for retrofit or replacement in fluid‑handling, spray, or pump systems requiring thermal safety or flow regulation. :contentReference[oaicite:5]{index=5}
- OEM‑grade Graco part (116461) — ensures correct threading, quality, reliability, and compatibility when used in compatible systems. :contentReference[oaicite:6]{index=6}
Compatible Machines / Systems
No publicly available exhaustive list of specific Graco models using 116461.
If your system’s parts diagram or service manual lists a “Thermal Valve 1/2″ NPT” (or part 116461), then this part is a correct fit. Otherwise, verify that the system’s fluid line uses a 1/2″ NPT thermal valve before installing.
Why Use This Thermal Valve?
This valve is useful when you need to:
- Automatically regulate fluid/air flow based on temperature — for safety or performance consistency
- Protect internal components from thermal stress or overheating
- Use a genuine OEM‑grade part to maintain reliability and correct fitment under pressure and thermal load
- Replace a worn or faulty thermal valve to restore safe operation of a fluid or spray system
Frequently Asked Questions
A “thermal valve” responds to temperature changes — opening, closing, or regulating flow depending on fluid/air temperature. This can help prevent overheating, manage viscosity changes, or protect system components under varying thermal conditions.
Yes — 116461 is listed in official Graco spare‑parts catalogs as “VALVE, THERMAL 1/2 NPT.” :contentReference[oaicite:7]{index=7}
Replace the valve if it fails to respond correctly to temperature changes, leaks, shows thread damage, or if fluid flow becomes inconsistent — because a faulty thermal valve may compromise safety or performance of the system.
