Spiral Nozzle
Spiral Nozzle
A spiral nozzle delivers a full cone spray pattern with a large internal passage, which is essential when the liquid being sprayed contains solids such as slurry, recirculated wash water, or debris. This design prevents clogging in critical systems like fire suppression, gas cooling, and chemical scrubbing, where a blocked nozzle can lead to system failure. The external vane allows maximum flow capacity and passage for particulates, making it suitable for duty where reliability under infrequent operation is required.
| Spray Pattern | Full cone |
|---|---|
| Spray Angles | 60° to 170° |
| Flow Rates | 5.5 to 4140 L/min at 3 bar |
| Thread Size | 1/4 inch to 2 inch |
| Connection | Male NPT or BSPT |
Dimensions and materials outside this table are confirmed against your duty sheet before quotation.
Key Benefits
What This Nozzle Gives You
- External vane design increases free passage for solids without restricting flow
- Full cone spray pattern ensures even coverage over a circular target area
- High clog resistance in recirculated or dirty water applications
- Suitable for infrequent use systems where failure is not acceptable, such as fire suppression
- Can be installed or replaced in existing pipe systems with NPT or BSPT male threads
- Available in brass, SS316, Teflon, and PVC for different chemical and temperature duties
Application Scenarios
Where It Is Installed
- Fire suppression systems using recirculated water where nozzle blockage must be avoided
- Gas cooling towers handling slurries or particulate-laden wash water
- Exhaust gas filtration systems with chemical scrubbing liquids containing suspended solids
- Industrial washing lines where water is reused and may carry debris
- Maintenance teams replacing nozzles in hard-to-reach locations without needing pipe modification
Who It Is For
Buyers Who Specify It
- Plant engineers maintaining fire protection systems with high reliability requirements
- Scrubber and gas treatment system designers specifying nozzles for slurry or dirty liquid service
- Maintenance managers in paper mills or chemical plants dealing with clogged nozzles in wash lines
- OEM machine builders integrating nozzles into systems that must operate reliably after long idle periods
- Facility managers upgrading old spray systems to reduce downtime from clogging
Problems It Solves
What It Fixes on the Line
- Nozzle clogging due to solids in recirculated or chemical wash water
- System failure in fire suppression systems when nozzles fail to activate under pressure
- Frequent replacement of internal vane nozzles in high-solids applications
- Inability to install or replace nozzles in existing pipe systems without adapters
- Uneven spray coverage caused by partial blockage in narrow internal passages
Technical Features
How It Is Built
- External vane design allows maximum free passage for solids
- Full cone spray pattern with angles from 60° to 170° under 3 bar pressure
- Expeditious flow channel reduces liquid barrier for higher capacity at given size
- Male NPT or BSPT thread standard for direct installation into existing pipe systems
- One-piece construction with no internal components to dislodge or wear
- Can be replaced without modifying the pipe or header structure
Materials
Body Materials and Where Each One Suits
- Brass for general water service at moderate temperature
- SS316 for applications involving chlorides or corrosive chemicals
- PVC for low-pressure, non-abrasive chemical environments
Manufacturing Process
How the Part Is Made
- Material selection based on the liquid being sprayed and system environment
- Machining of the body and external vane structure
- Inspection of orifice and flow passage for dimensional accuracy
- Testing of spray pattern and flow rate under 3 bar pressure
- Packaging and shipping with protection against mechanical damage
Quality Control
What Is Checked Before It Ships
- Raw material is selected from brass, 303 stainless steel, 304 stainless steel, and 316 stainless steel
- Every product is tested before it ships
- Quality controlled at material selection, manufacturing, inspection, packaging and transportation
- A 3 month quality guarantee is stated on the product listings
Customization
What Can Be Changed to Suit You
- Standard and non-standard nozzles can be made to customer drawing
- OEM orders accepted including custom marking and packaging
- Selective materials available for special applications beyond brass, SS316, Teflon, and PVC
- Small volume orders accepted for trial installations
- Samples can be ready within 10 days
Comparison
How It Compares With the Alternatives
| Full cone nozzle with internal vane | Internal vanes restrict flow passage and are more prone to clogging with solids; the spiral design avoids this by placing the vane outside |
|---|---|
| Hollow cone nozzle | Hollow cone produces a ring spray with finer droplets, better for gas scrubbing, but has a smaller passage and is more likely to clog |
| Flat fan nozzle | Flat fan covers a linear area, not a circular footprint; it is not suitable for full coverage over a round target or in systems requiring high solids passage |
| Spiral nozzle with filter | Adding a filter increases clog resistance but reduces flow capacity and requires periodic cleaning; the spiral design avoids the need for a filter in many cases |
Use Guide
Fitting and Running It
- Confirm the liquid contains solids before selecting a spiral nozzle over a standard full cone
- Match the thread size and standard (NPT or BSPT) to the existing pipe system
- Use the flow rate range of 5.5 to 4140 L/min at 3 bar to select the appropriate size for your system pressure
- Choose material based on chemical compatibility and temperature of the liquid
- Inspect the nozzle after long idle periods to ensure no debris has settled in the passage
- Replace the nozzle if spray pattern becomes uneven or flow drops below expected levels
Questions Buyers Ask
Spiral Nozzle Questions
What spray angles and flow rates can you supply for this spiral nozzle?
Spray angles range from 60° to 170° and flow rates from 5.5 to 4140 L/min at 3 bar. Confirm your system pressure and target flow, and we will select the correct size code.
Which thread sizes and standards are available?
Available in 1/4 inch to 2 inch with male NPT or BSPT thread, so it can usually be installed directly into existing pipe systems without adapters.
Which body material should I choose?
Brass for general water service, SS316 for chlorides or corrosive chemicals, Teflon for acid or solvent service, and PVC for low-pressure chemical environments.
Can I get a sample before placing a production order?
Yes. Trial samples can be sent free of charge and samples can be ready within 10 days.
Do you accept small orders and OEM marking?
Yes. Small volume orders are accepted, and standard or non-standard nozzles can be made to your drawing under an OEM order.
What happens if a nozzle fails in service?
A 3 month quality guarantee is given on the product. Send us the nozzle photo and the service conditions by email and we will assess the failure cause.
What are your payment terms?
The product listings state T/T 100% in advance. Send the model, quantity and destination port by email and we will confirm the terms for your order.
Go Deeper
Industries Guides and Ways to Order
Ask About Spiral Nozzle
Send the liquid, the pressure at the nozzle and the thread on your header. Trial samples can be sent free of charge and samples can be ready within 10 days.