A full cone spray nozzle is one of the most widely specified nozzle types in industrial spraying because it fills an entire circular or square area with liquid rather than concentrating it in a ring or a line. This guide covers how full cone nozzles work, the difference between round and square patterns, Jeltecn’s BB and BBG series specifications, and the variables that decide whether a given model will actually perform in your process.
Quick answer: when should you specify a full cone nozzle?
Specify a full cone nozzle when the process needs even, filled coverage over a defined area — cooling a surface, washing a belt, knocking down dust, or distributing chemical across a cross-section. Choose the square pattern (Jeltecn’s BB series) when nozzles will be arranged in a grid or header and overlap needs to be predictable and gap-free; choose the round pattern (BBG series) when the target area is circular, such as a tank, duct, or single-point wash-down. If the target is an annular ring rather than a filled area, a hollow cone or spiral nozzle is usually the better starting point.
How full cone nozzles work
A full cone nozzle uses an internal vane or deflector to spin the liquid before it exits the orifice, producing a spray that is evenly filled from the centerline outward rather than concentrated at the edge (as in a hollow cone) or along a plane (as in a flat fan). Jeltecn’s BB and BBG series use an X-shaped spoiler vane, which keeps the flow channel largely unobstructed while still generating the swirl needed for uniform distribution. An unobstructed channel matters in practice: it is the main reason full cone nozzles are more resistant to clogging than nozzles that rely on very small internal passages.
Spray angle, drop size, and flow are linked. At a given pressure, a wider spray angle generally produces a wider coverage footprint with a shorter effective throw distance, while a narrower angle throws further but covers less width at the same distance. Because these nozzles use medium-to-large drop sizes, they tend to be more resistant to wind drift than fine-mist patterns, which is one reason they remain a default choice for outdoor and open-area washing and dust-control duties.
Square vs. round full cone coverage
The practical difference between square and round full cone nozzles is what happens at the edge of the spray footprint. A round full cone nozzle produces a circular impact area; when several round-pattern nozzles are arranged in a grid, the circles either overlap in a lens-shaped zone (double coverage) or leave gaps at the corners, depending on spacing. A square full cone nozzle is designed so the impact area is close to a square, which tiles more predictably across a flat surface or conveyor width with less double-coverage waste and fewer gaps — this is why square patterns such as Jeltecn’s BB series are common in header and grid installations for washing, 냉각, and dust suppression across a moving line.
Where full cone nozzles are used
- 냉각 of hot product, gas streams, or process equipment where filled, even coverage prevents hot spots.
- Washing and rinsing on conveyor lines, parts washers, and vehicle or equipment wash-down, where grid arrangements of square nozzles cover a moving surface.
- Dust suppression at material transfer points, crushers, and stockpiles, where medium-to-large droplets knock down dust without the drift risk of finer mist.
- Chemical processing and scrubbing where a filled spray cross-section improves gas-liquid or liquid-solid contact.
- Fire protection and tank applications where a dependable, clog-resistant filled pattern is required.
비비 / BBG series specifications
| Parameter | 비비 / BBG series |
|---|---|
| Pattern | 정사각형 (비비) or round (BBG) full cone |
| 재료 | 303SS / 316SS / 놋쇠 |
| Spray angle | 40°-115° (standard and wide-angle options) |
| Thread size | 1/8″ up to 2-1/2″ |
| Thread type | BSPT, NPT, male, female |
| Orifice diameter | 1.6-31.8 mm |
| Water pressure | 0.3-10 술집 |
| 용량 | 0.93-1230 L/h |
| 인증 | ISO 9001:2015, SGS, CE |
These figures are selection references for Jeltecn’s current BB square full cone spray nozzle and narrow-angle BBG round full cone series. Custom orifice sizes, materials such as PVDF or PTFE for corrosive service, and OEM/ODM branding are available on request; confirm the exact operating point against a model-specific data sheet before releasing a purchase order.
Full cone vs. hollow cone vs. flat fan
| Pattern | Coverage shape | Typical drop size | Good starting fit |
|---|---|---|---|
| Full cone | Filled circle or square | Medium to large | 냉각, 세탁, 먼지 제어, chemical distribution |
| Hollow cone | Annular ring | Small to medium | Gas-liquid contact, finer atomization needs |
| Flat fan | Line or sheet | Small to medium | Header coverage, 청소, coating a moving line |
| Spiral | Full or hollow cone, open passage | Medium to large | High-solids or clog-prone liquids, 가스 세정 |
For line and header coverage instead of a filled area, see the flat fan spray nozzle guide. To compare full cone and flat fan side by side for a specific application, see Flat Fan vs. 전체 원뿔 노즐: Which Spray Pattern Fits Your Application?
Engineering variables to verify before ordering
- Free passage vs. solids content. Confirm the orifice free passage against the largest expected particle size in the liquid to avoid blockage.
- Pressure at the nozzle, not at the pump. Line losses change the actual flow and droplet size delivered at the nozzle face.
- Coverage at the installed distance. Spray angle on a data sheet describes the pattern at a reference distance; verify actual footprint and overlap at your real mounting height.
- Grid spacing and overlap. For header arrays, confirm spacing against the specific angle and pattern shape (square vs. 둥근) to avoid gaps or excessive double coverage.
- Material compatibility. Match stainless steel, 놋쇠, or specialty plastics to the fluid’s chemistry, 온도, and abrasiveness.
- Mounting orientation. Full cone nozzles are typically most uniform when mounted perpendicular to the target; confirm the manufacturer’s orientation tolerance for angled installations.
What to include in an RFQ for full cone nozzles
Send the following so Jeltecn can confirm fit and quote accurately on the first pass:
- Application and required outcome (cooling load, wash quality, dust capture, coverage area)
- Fluid type, specific gravity, viscosity, solids content, and temperature
- Required flow and available pressure range at the nozzle
- Spray distance, target dimensions, and whether nozzles will be arranged in a grid or header
- Connection standard, material, and any certification requirements
- Quantity, destination, and required documentation
Send Jeltecn your full cone nozzle requirements for selection support and a quotation. For high-value or safety-critical installations, request a coverage/overlap review before finalizing grid spacing.
Frequently asked questions
What is the difference between a square and round full cone nozzle?
Both produce a filled spray, but a square full cone nozzle shapes the impact area closer to a square, which tiles more efficiently in a grid with less overlap waste and fewer coverage gaps. A round full cone nozzle produces a circular footprint, which is often a better fit for a single circular target such as a tank or duct.
Why is my full cone nozzle clogging?
The most common causes are an orifice free passage that is too small for the solids in the liquid, insufficient upstream filtration, or a pressure drop that is too low to maintain the design flow pattern. See the spray nozzle clogging guide for a full troubleshooting checklist.
What spray angle should I choose?
Narrower angles (around 40°-60°) throw further with higher impact and are common for washing and targeted cooling; wider angles (90°-115°) cover more area at a shorter distance and are common for header arrays and broad dust suppression. Confirm actual coverage at your specific mounting distance rather than relying on the angle alone.
Can full cone nozzles handle abrasive or corrosive liquids?
Standard BB/BBG series nozzles are available in 303SS, 316SS, and brass. For highly abrasive or corrosive service, ask about hardened or specialty plastic materials such as PVDF, which resist wear and chemical attack better than standard metals.
How do I calculate how many nozzles I need for a header?
Divide the total width to be covered by the effective coverage width of one nozzle at the intended mounting height and spray angle, then adjust for the desired overlap. Share your line width, mounting height, and required uniformity with Jeltecn’s team for a spacing recommendation.
Related reading
See the flat fan spray nozzle guide, the flat fan vs. full cone comparison, and the spray nozzle clogging and prevention guide for related selection criteria.