4400
- Double Concentric Gas Seal
The 4400 is a true double, non-contacting gas seal designed specifically for pumps, mixers, and agitators. With autonomous gas control and no wear due to face contact, the 4400 is a set-it-and- forget-it solution to "bad actor" seals in any industry/application. Its compact design allows for installation in most equipment without the need for modification, thus making it ideal for upgrading underperforming sealing solutions.
The 4400 has a unique design that enables the seal to operate as a non-contacting gas seal when barrier gas is present, operate as a contacting low-emission liquid back up seal when barrier gas is lost, and then recover and return to a non-contacting gas seal when barrier gas is restored. The in-gland control system further enhances operation by automatically regulating barrier gas pressure, thus eliminating the need for and expense of, an external gas control panel.
Product Features
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- Offers low cost of ownership for a broad range of applications
- Advanced technology that is easy to install and operate
- Exclusive In-Gland Control System eliminates the need and expense of an external gas panel
- Eliminates atmospheric emissions
Technical Data
| Size Range | 25 mm to 90 mm (1.000 inch to 3.625 inch) |
|---|---|
| Applicable Standards and Approvals | ISO-3069C, ASME B73.1, ASME B73.2 |
| Variants | 4410 - Slow Speed Mixer Design |
Materials
| Faces | CB, SSC |
|---|---|
| Elastomers | FKM, EPDM, FEPM, FFKM |
| Metals | EN 1.4401 (316SS), Other Metallurgies available on request |
| Springs | EN 2.4819 (Alloy C-276) |
Operating Conditions
| Pressure | 711 mm (28") Hg Vacuum to 20 bar g (300 psig) |
|---|---|
| Temperature | -55 to 300 °C (-67 to 570 °F) |
| Speed | 25 m/s ( 5000 fpm ) |
| Speed Min | 8 m/s ( 1500 fpm ) |
| Notes | Seal pressure capabilities are dependent on the fluid sealed, temperature, speed, and seal face combinations. For operation outside the limits and additional materials consult Chesterton Mechanical Seal Engineering. |
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