In a normal coned and threaded tube connection, any external mechanical loading on the tubing lines, valves or fittings would be concentrated on the first thread of the tube. This can cause failure of the tube at this thinner cross-section. The anti-vibration collet gland assembly grips the tube behind the connection, supporting the tube at the full cross-section and straight area, moving the loading away from the threaded area. The back part of the assembly has a gland nut that, when tightened properly, compresses a split collet on the tube, providing the beneficial gripping action.
All anti-vibration collet gland assemblies come with a Molybdenum Disulfide Coating to guard against galling of the stainless components.
Gland Pattern
 |
Catalog
Number |
Part |
O.D.
Tubing
Size (in.) |
Dimensions (in.) |
| A |
B
(Hex.) |
C
(Hex.) |
|
| 21AVA4M |
Complete Assembly |
1/4 |
1.27 |
0.50 |
0.62 |
| 21AVB4M |
Collet Body |
| 21AVC4M |
Slotted Collet |
| 21AVG4M |
Gland Nut |
| 21AVA6M |
Complete Assembly |
3/8 |
1.54 |
0.62 |
0.81 |
| 21AVB6M |
Collet Body |
| 21AVC6M |
Slotted Collet |
| 21AVG6M |
Gland Nut |
| 21AVA9M |
Complete Assembly |
9/16 |
1.82 |
0.94 |
0.94 |
| 21AVB9M |
Collet Body |
| 21AVC9M |
Slotted Collet |
| 21AVG9M |
Gland Nut |
| 21AVA12M |
Complete Assembly |
3/4 |
2.01 |
1.19 |
1.25 |
| 21AVB12M |
Collet Body |
| 21AVC12M |
Slotted Collet |
| 21AVG12M |
Gland Nut |
| 21AVA16M |
Complete Assembly |
1 |
2.44 |
1.38 |
1.50 |
| 21AVB16M |
Collet Body |
| 21AVC16M |
Slotted Collet |
| 21AVG16M |
Gland Nut |
|
|
|
All dimensions are for reference only and subject to change.
All general terms and conditions of sale, including limitations of our liability, apply to all products and services sold.
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