Tri-Clamp x Male NPT Adapter – Stainless Steel – 21MP
Price range: $30.35 through $295.65
- Sanitary Stainless Tri-Clamp x Male NPT Adapter
- Available in 304 & 316L Stainless Steel
- Sanitary Grade (Minimum polish 32 RA)
- Ideal for Food & Beverage and Pharmaceutical Markets
- Stamped with Heat Lot Numbers
Tri-Clamp x Male NPT Adapter – 304 & 316L Stainless
This sanitary-grade Tri-Clamp x Male NPT Adapter is available in both 304 and 316L stainless steel, with a minimum polish of 32 RA for hygienic applications. Designed for use in food, beverage, and pharmaceutical processing, each adapter is stamped with heat lot numbers for full traceability. Built for durability and precision in sanitary systems. Tri-Clamp Measurement Guide
| Size (OD and NPT) |
Part Number | Dimensions | ||||
| 304L | 316L | A | B | |||
| 1/2 “ | — | 21MP6-050 | 1.625 | 0.782 | ||
| 3/4 “ | — | 21MP6-075 | 1.787 | 0.794 | ||
| 1 “ | 21MP4-100 | 21MP6-100 | 2.250 | 0.985 | ||
| 1-1/2″ | 21MP4-150 | 21MP6-150 | 2.250 | 1.025 | ||
| 2 “ | 21MP4-200 | 21MP6-200 | 2.638 | 1.058 | ||
| 2-1/2″ | 21MP4-200 | 21MP6-200 | 2.875 | 1.571 | ||
| 3 “ | 21MP4-300 | 21MP6-300 | 3.070 | 1.634 | ||
| 4 “ | 21MP4-400 | 21MP6-400 | 3.155 | 1.734 | ||
| Grade | |
|---|---|
| Size (Tube OD x NPT) | 1/2", 3/4", 3/4" x 1/2", 1", 1" x 1/2", 1" x 3/4", 1-1/2", 1-1/2" x 1/2", 1-1/2" x 3/4", 1-1/2" x 1", 1-1/2" x 1-1/4", 2", 2" x 1/2", 2" x 3/4", 2" x 1", 2" x 1-1/2", 2-1/2", 2-1/2" x 1-1/2", 2-1/2" x 2", 3", 3" x 2", 4", 4" x 3" |
| DuvaSanitary.com | Steel & O’Brien | Dixon | Sanitary Solutions | Wayland | VNE | |
|---|---|---|---|---|---|---|
| 21MP | 21MP | 21MP | SS21MP | 21MP | EG21 | |
| 304 | 304 | 304 | 304 | 304 | 304 | |
| 1″ | 21MP4-100 | 21MP-1-304 | 21MP-G100 | SS21MP-1-304 | W421MP-1 | EG211.0 |
| 1-1/2″ | 21MP4-150 | 21MP-1.5-304 | 21MP-G150 | SS21MP-1.5-304 | W421MP-15 | EG211.5 |
| 2″ | 21MP4-200 | 21MP-2-304 | 21MP-G200 | SS21MP-2-304 | W421MP-2 | EG212.0 |
| 2-1/2″ | 21MP4-250 | 21MP-2.5-304 | 21MP-G250 | SS21MP-2.5-304 | W421MP-25 | EG212.5 |
| 3″ | 21MP4-300 | 21MP-3-304 | 21MP-G300 | SS21MP-3-304 | W421MP-3 | EG213.0 |
| 4″ | 21MP4-400 | 21MP-4-304 | 21MP-G400 | SS21MP-4-304 | W421MP-4 | EG214.0 |
How to Size a Tri-Clover/Tri-Clamp Fitting.
Have you ever wondered how to choose the correct Tri-Clamp size? Or how to measure an existing Tri-Clamp fitting?
The sizing is based on the outside diameter (OD) of the tube, not on the outside diameter (OD) of the flange.
For example:
- If your tube OD measurement is 2 inches, then your Tri-Clamp size is 2”.
- If your existing Tri-Clamp fitting’s flange measures approximately 2.5 inches OD (2.516”), then your Tri-Clamp size is 2”.
Consult the chart below for corresponding Size / Tube OD and Flange OD measurements.
Note:
- Sizes ½” and ¾” have the same flange OD of approximately 1 inch (0.984”).
- Sizes 1” and 1-1/2” have the same flange OD of approximately 2 inches (1.984”).
Tri-Clamp Fitting Size Chart.
| Tri-Clamp Size / Tube OD | Tri-Clamp Flange OD |
|---|---|
| 1/2″ & 3/4″ | 0.984″ |
| 1″ & 1-1/2″ | 1.984″ |
| 2″ | 2.516″ |
| 2.5″ | 3.047″ |
| 3″ | 3.579″ |
| 4″ | 4.682″ |
| 6” | 6.570” |
| 8” | 8.602” |
| 10” | 10.570” |
| 12” | 12.570” |
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