Basket Clamp Gasket FDA USP Class VI
On a tri-clamp connection, the gasket does more than seal. Some versions add a function: filtering, regulating, measuring or validating, directly at the connection plane, with no add-on device on the line.
The basket clamp gasket, or sock screen, extends the sieving mesh into a sock shape inserted into the inside diameter of the tube. This extended shape offers up to 300 percent more filtering surface than a flat screen, and therefore a much greater retention capacity before clogging.
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Rubberfab screen gasket references
Sock screen inserted into the flow path, +300% filtering surface
Tri-clamp basket gasket, sock-shaped strainer inserted into the inside diameter of the tube. Up to 300 percent more open area than a flat screen, for 300 percent more collection capacity. Designed for large volumes of particles at low pressure drop. 316 stainless steel mesh. Fitted like a standard gasket. Ideal for tank transfers and truck unloading.
The filtering surface the flat screen lacks
A flat screen filters across the tube cross-section only. Its retention capacity is limited and it clogs quickly with a loaded fluid. The basket extends the mesh as a sock into the flow path, which more than triples the filtering surface and delays clogging accordingly.
The impact on operations is direct: more collection capacity, fewer cleaning interventions, fewer shutdowns and strainer changes. On a continuous pharmaceutical line, this means production time gained. The large open area also maintains a low pressure drop despite the flow rate.
The basket protects pumps and equipment from foreign bodies, reduces pump wear and seizing, and retains as much material as possible for quality control. It is particularly suited to transfers between tank and tanker truck, in both directions.
Characteristics
| Characteristic | Value |
| Type | Basket gasket, sock strainer inserted into the flow path |
| Mesh cloth | 316 stainless steel |
| Filtering surface | Up to +300 percent compared with a flat screen |
| Capacity | Up to +300 percent collection |
| Installation | Tri-clamp or Camlock, like a standard gasket |
| Pressure drop | Low despite the flow rate, thanks to the open area |
| Typical use | Tank-to-truck transfer, unloading, high volumes |
Dimensions and correspondence
The gasket is fitted like a standard gasket, on the outside diameter of the ferrule face. The clamp, ferrule and tube correspondence table, common to all versions, is available for download.
The gasket: the sensitive link in the clamp fitting
The quality of a clamp connection depends on three elements: the gasket, the clamp and pipe alignment. A version with an added function, screen, orifice or measurement port, places more stress on the gasket than a solid gasket. A stressed installation or excessive tightening damages it more quickly. Compression is achieved at the torque specified for the clamp, never by feel.
Frequently asked questions
Basket or flat screen?
The basket for particle-laden fluids and high volumes, where its capacity prevents frequent clogging. The flat screen for a clean fluid where only safety screening is required, with minimal footprint.
Which way should it be inserted?
The sock extends into the inside diameter of the tube, on the upstream side, so that the fluid passes through the mesh from the inside outwards and the particles are retained in the basket. The installation direction follows the direction of flow.
Does it reduce pressure drop?
Compared with a flat screen of the same fineness, yes. The much larger open area passes the same flow rate with less restriction, which matters on high-flow transfer lines.