SCREEN / VORTEX

The key feature in this group is how smoke is directed through water. Openings in a screen element can split one larger stream into many smaller bubbles, while the chamber's geometry may also set the water in motion. This does not mean one identical design: the shared name covers bongs with a disc, a honeycomb filter, a double screen, and a system described as two-stage filtration.

A screen or perforated disc directs flow through multiple openings. This brings smoke into contact with water at many points instead of sending it through one large passage. The number, diameter, and arrangement of the openings can change draw resistance, water activity, and flow characteristics.

The term vortex refers to movement created by chamber geometry and flow direction. This effect is not automatically a feature of every bong with a screen. A perforated component alone also does not confirm a specific number of filtration stages or identical operation across all models.

The group includes several clearly different solutions. The current selection contains the DYSK ice bong measuring 32 cm tall with an 18.8 mm joint, a glass bong with honeycomb filtration measuring 27 cm tall with a 14.5 mm joint, and the BulletGreen ice bong with filtration described as double, measuring 44 cm tall with an 18.8 mm joint.

Another version is the Unikatowe Podwójne Sito Bong — Green v2, measuring 45 cm tall with 5 mm thick glass. These examples show that the category's common denominator is the role of flow-dispersing components, while the overall bong format, connection specifications, and number of filtration components may vary.

• DYSK: 32 cm, 18.8 mm joint
• Honeycomb: 27 cm, 14.5 mm joint
• BulletGreen with 2x filtration: 44 cm, 18.8 mm joint
• Podwójne Sito — Green v2: 45 cm, 5 mm glass

The type of filtration component primarily affects the flow path and water action. More small openings generally mean greater dispersion, but they may also increase resistance and require more thorough cleaning. A double arrangement directs flow through more than one component, though its perceived effect depends on the entire design rather than the filter name alone.

Device proportions and joint diameter are equally important. Height affects capacity and ease of positioning, while the joint determines the mechanical connection to compatible parts. This category includes at least two joint sizes, 14.5 mm and 18.8 mm, so parts should be selected for the specific version.

Perforated components have many narrow passages, so regular rinsing helps maintain unrestricted flow. Residue left in the openings may change draw resistance and restrict filter action over time. When cleaning glass, avoid sudden temperature changes and tools that could strike the delicate disc or screen.

The bong should stand securely, and the water level should let the filtration component work without flooding the mouthpiece. The amount of water depends on the particular chamber's design, so even flow and comfortable use are the best way to assess the proper level.

• The category includes bongs, not separate filters or accessories
• Actual versions include a disc, honeycomb, double screen, and two-stage filtration
• Models in this group differ in height and joint diameter, among other features
• The filtration component affects how flow disperses in water