Replacement Details & Compatible Machines for the GRACO 120665 Gauge, Pressure, Panel Mount 1.5″
This listing is for the Graco part number 120665 – a 1.5-inch panel-mount pressure gauge designed for integration into control panels of airless spray systems or fluid pressure monitoring modules. The gauge is a direct‐drop replacement of the original equipment specification, and it provides clear, reliable pressure readings in a compact panel stance. :contentReference[oaicite:1]{index=1}
Key Features
- Dial size: 1.5″ (panel mount configuration) :contentReference[oaicite:2]{index=2}
- Mount style: Panel-mount (face/flange) gauge, intended for mounting in control panels rather than bottom-mount-on regulators. :contentReference[oaicite:3]{index=3}
- OEM fitment: Matches Graco part number 120665 for compatibility and correct replacement. :contentReference[oaicite:4]{index=4}
- General application: Pressure monitoring for spray/finishing equipment panels, not necessarily limited to one machine line. :contentReference[oaicite:5]{index=5}
Compatible Machines & Assemblies
Please note: While no public list was found that names **every** machine this gauge fits, below are the typical equipment families from Graco where a panel mount gauge like the 120665 would be used. Always confirm with your machine’s parts manual for port style, mounting style, pressure range, and thread type before purchasing.
- Graco high-pressure airless sprayer control panels (industrial finishing rigs)
- Graco fluid-regulator panel assemblies in spraying/finishing systems
- Graco cart-mounted sprayer machines which use a separate panel gauge rather than built-in pump gauge
- Any Graco system that calls for a 1.5″ panel-mount gauge as per parts listing (check your parts list for “Gauge, Pressure, Panel Mount, 1.5″ – P/N 120665”)
Installation & Fitment Tips
When installing the 120665 gauge, please consider the following:
- Verify the **mounting hole diameter** and **flange or nut** clearance: the panel-mount gauge should sit flush or just behind the panel surface.
- Check the **pressure range** on your original gauge to ensure the replacement matches (same range, same dial graduation). If the system uses a very high-pressure gauge (e.g., 3000+ psi), ensure this 120665 version is rated appropriately.
- Confirm the **connection thread** and whether it matches your socket/port. Although the datasheet is limited, Graco panel gauges commonly use a standard NPT connection – verify with your schematic.
- Ensure calibration of the gauge is acceptable: when replacing, start at zero pressure with the system off, then move through range to assure reading accuracy.
- When removing the old gauge, relieve system pressure fully first and clean any debris around the mounting port to avoid contamination or seal damage.
Frequently Asked Questions
The published listing for P/N 120665 indicates it's a panel-mount gauge of 1.5″ diameter, but the specific pressure range (psi/bar) is not always clearly stated. You should confirm the pressure range printed on your existing gauge (for example 0-1000 psi or 0-5000 psi) and match that exactly. If your system uses very high pressures (1000+ psi), ensure the replacement gauge is rated accordingly.
Yes. This gauge is a panel-mount style, meaning the dial faces outwards in a control panel cut-out, rather than a bottom-mount or back-mount style. Ensure your application is compatible with a panel-mounted gauge. Using a different mount style may result in incorrect fit or stress on the connection.
Potentially yes, as long as the gauge-mounting style, thread size, pressure range, and panel cut-out all match your system. While this is an OEM Graco part, the fit may work with other brands — but you must verify thoroughly. Mismatched ranges or connections can lead to inaccurate readings or safety issues.
First, relieve all pressure and zero the gauge (with system off). Ensure the connection is tight and sealed properly. If reading is still off, check if the gauge is matched for the correct pressure span; if it is, you may need to calibrate it or verify the system isn’t mounting in a vibration-heavy location (which can affect accuracy). For panel gauges, avoid mounting near high heat sources or heavy vibration unless gauge is vibration-damped.
Summary
To summarise: the GRACO 120665 panel-mount gauge is a solid replacement for systems requiring a 1.5″ diameter control panel gauge. It is ideal for integration into finishing rigs or spray systems by Graco or equivalent, provided you confirm the correct mounting style, thread size, and pressure range. Always reference the machine’s parts manual to ensure correct specification match.
For any further fitment clarification, you may refer to your machine’s original parts breakdown or contact your local Graco distributor with your machine model and serial number.
