Graco 104992 Sight Glass Kit
$65.48
In Stock
The Graco 104992 Sight Glass Kit restores clear visibility on the air-side FRL filter bowl. Match it to the 1/2 in (NPT) filter family—specifically Graco 106149—not to a sprayer model name.
- Part No: 104992
- Used With: Graco 106149 Air Filter (1/2 in)
- Function: FRL bowl sight window (air-side, not fluid-side)
- Fit Check: Confirm your FRL filter part number/size → 1/2 in NPT
- Benefit: Replaces cloudy/cracked window for quick visual checks
Quantity
Genuine OEM Part
Fast Shipping (Order by 1 PM CST)
Easy Returns
Compatibility & Key Fitment (Put First)
This Graco 104992 Sight Glass Kit is used on the air-side FRL (filter-regulator-lubricator) assembly—specifically with the 1/2 in (NPT) filter body it’s designed for.
- Any system using Graco 106149 Air Filter (1/2 in NPT) → fits with 104992
- Rig/compressor FRL blocks that specify a 1/2 in sight glass kit matching 104992
- Industrial spray setups where the air filter bowl sight glass is the 1/2 in Graco pattern (check your FRL plate/parts list)
What It Is
The Graco 104992 Sight Glass Kit is an OEM replacement sight window kit for the FRL filter bowl. It restores clear visibility of bowl/drop rate conditions so operators can monitor air-side condition at a glance.
Quick Specs
| Part Number | 104992 |
|---|---|
| Type | Sight Glass Kit (air filter bowl window) |
| Port / Size Family | 1/2 in NPT FRL filter body family |
| Used With | Graco 106149 Air Filter (1/2 in) |
| Application | Air supply FRL on spray/industrial rigs (not a fluid-side paint pump part) |
Key Benefits
- OEM fit & sealing for the specified 1/2 in FRL filter body
- Clear visibility to check bowl condition / oil drop monitoring
- Fast service—refreshes a cloudy/damaged sight window
Notes & Verification
- Match by FRL component: if your rig’s air filter is 106149 (1/2 in), this kit is the correct sight glass.
- If your FRL is a different size family, use the corresponding kit (e.g., 3/8 in or 3/4 in families use different sight glass kits).
- Check your machine’s parts manual or FRL dataplate for the filter part number before ordering.
Frequently Asked Questions
This kit is matched to the FRL filter body, not a sprayer model name. If your air filter is Graco 106149 (1/2 in), then the 104992 Sight Glass Kit is correct.
Locate the FRL block on your air line and read the filter part number on the body or in your manual. If it lists 106149 (1/2 in NPT), use 104992.
No. The 104992 Sight Glass Kit is for the air-side FRL filter bowl window, not for the paint pump/fluid path.
Use the kit that matches your FRL size family. Example families: 3/8 in, 1/2 in (this kit), and 3/4 in have different sight glass kits. Always match by the filter’s part number/size.
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