Web Menu

Product Search

Language

Share

Water Spray Nozzles (Deluge / Foam)

-- Steady & Reliable Manufacturer --

Introduction: Targeted Water Application for Fixed Systems

Water Spray Nozzles are specialized discharge devices used in fixed fire protection systems, primarily Deluge Systems, Water Mist Systems, and Foam Water Spray Systems. Unlike traditional automatic sprinklers that are individually actuated by heat, these nozzles are always open and are used to provide a specific, defined water spray pattern and density over high-hazard equipment or storage areas.

We offer three main types: Spray Nozzles (standard open nozzles for specific pattern coverage, such as window protection), Water Mist Nozzles (producing extremely fine droplets for high-value assets where water damage must be minimized), and Foam Water Spray Nozzles (designed to effectively apply a foam solution blanket). They are typically made from brass or stainless steel and utilize a fixed orifice size to control flow rate and coverage area (density).

Nozzles are characterized by their K-factor (flow constant) and their spray angle (e.g., 180∘ or 90∘ wide angle). Selection is highly dependent on the hazard and the required water density, all mandated by standards like NFPA 13, NFPA 15 (Water Spray), and NFPA 16 (Deluge). (Approx. 560 words)

Advantage: Specific Density, Optimized Pattern, and Corrosion Resistance

  • Optimized Density: Nozzle selection ensures the exact water application density (e.g., 0.20 GPM/ft2) is achieved, crucial for high-hazard protection.
  • Targeted Coverage: Fixed spray angles ensure the entire hazard area (e.g., a specific piece of machinery or a bank of tanks) receives uniform water coverage.
  • Corrosion Resistance: Stainless steel construction (304/316) is standard for chemical plants, offshore platforms, and areas using foam solution, ensuring longevity.
  • K-Factor Accuracy: Precision machining guarantees the actual flow matches the specified K-factor for reliable hydraulic calculation.
  • UL/FM Certification: Certified for use in their intended application (NFPA 15/16), ensuring the product meets rigorous flow and pattern performance standards.
  • Immediate Response: As open nozzles, water/foam discharge is immediate once the upstream deluge valve is tripped by the detection system.

Specification: Type, K-Factor, and Spray Angle

Nozzle TypeStandard Spray, Water Mist, Foam-Water Nozzle (Open)
MaterialBrass, Chrome Plated, or Stainless Steel (304/316)
K-Factor RangeK=1.5 to K=11.2 (Standard Units: GPM/psi0.5)
Spray PatternConical, Flat Spray (Curtain), or Full/Hollow Cone
Spray Angle60∘ to 180∘ (Dependent on Coverage Area)
System Used InDeluge, Water Mist, Foam-Water Systems, Exposure Protection
Standard ComplianceNFPA 13, NFPA 15, NFPA 16, UL Listed, FM Approved
Connection Size1/2 inch to 1 inch NPT/BSP

Targeted Application in Special Hazard Systems

Transformer and Cable Tunnels

Deluge systems using water spray nozzles to rapidly cool and extinguish high-heat oil or electrical fires in industrial infrastructure.

Storage Tanks and Vessel Cooling

Using 180∘ spray nozzles to create a dense water curtain to protect structures from radiant heat exposure during an adjacent fire (exposure protection).

Aircraft Hangars (Foam-Water)

Utilizing specialized nozzles designed for optimal aspiration and distribution of foam solution over liquid fuel spills.

Flammable Liquid Processing Areas

Employing flat spray nozzles to provide a high-density, targeted water application over potential spill points or pump areas.

High-Value Archives (Water Mist)

Using fine-mist nozzles to suppress fire with minimal water volume, drastically reducing potential damage to sensitive materials.

Grow Your Bussiness With KAITUO

  • INNOVATION

    Professional R&D Team

    We have a professional R&D team of over 15 people who are able to provide innovative products and customized design services to our customers.

  • QUALITY

    Product quality assurance

    We adhere to quality as a lifeline for our business development, and strict quality management systems ISO and CE, as well as a variety of advanced quality testing equipment are our guarantees for product quality.

  • PRODUCTION CAPACITY

    Annual output exceeds 400,000

    Every month over 400,000 pcs of kinds of valves, including fire extinguisher valve, lpg valve, marine gas cylinder valve and so on.

  • SERVICE

    One-stop service

    We have complete design, and product development, testing and quality control are all carried out in the factory, which to a certain extent guarantees the high quality and performance of Kaituo fire equipment.

Payment & Shipping: Flexible Global Trade Solutions

We offer comprehensive and secure international trade terms tailored to our global clientele.

  • Accepted Payment Methods:

    Wire Transfer (T/T): Standard 30% deposit to confirm the order, 70% balance upon presentation of Bill of Lading (B/L) copy.

    Letter of Credit (L/C): Irrevocable L/C at sight for large orders, providing maximum financial security for both parties.

  • Shipping Terms (Incoterms):

    FOB (Free On Board): Ningbo Port is our standard shipping hub.

    CIF/CFR: Available upon request; we manage shipping logistics to your designated port.

  • Packaging:

    Nozzles are individually boxed, with thread protectors and internal padding, then consolidated into secure master cartons.

Comprehensive Information Summary

Minimum Order Quantity (MOQ)5,000 Units (Brass/Chrome), 1,000 Units (Stainless Steel)
Lead Time45-60 Days (Casting, Precision Machining, and Calibration Testing)
PackagingIndividual Boxes, Protected Threads, Master Cartons.
CertificationsNFPA 13/15/16, UL Listed, FM Approved, ISO 9001.
Raw MaterialsBrass, Stainless Steel (304/316), PTFE (Seals).
Customization OptionsK-Factor (Fixed Orifice), Spray Angle, Custom Thread/Flange Size, Material (Brass/Stainless Steel), Finish (Chrome/Polished).

Professional Usage Tips

  1. Nozzle Orientation:

    Ensure the nozzle is installed in the correct orientation (upright, pendent, or horizontal) as specified in the listing, as this affects the spray pattern.

  2. Pressure Check:

    Nozzles require a minimum operating pressure (typically 20 psi) to achieve the listed spray pattern and throw distance. This must be verified hydraulically.

  3. Strainers and Filters:

    Deluge systems using spray nozzles often require a main line strainer to be installed upstream of the valve to prevent debris from clogging the small nozzle orifices.

  4. Water Mist Droplet Size:

    When selecting water mist nozzles, verify the droplet size (microns) is certified for the hazard, as very small droplets are required for effective total flooding or inerting.

  5. Foam Nozzle Aspiration:

    Foam-water nozzles require air aspiration (intake holes) to mix air with the foam solution, creating the necessary bubble structure for a foam blanket. Ensure these intakes remain clear.

Get in Touch

ABOUT KAITUO
Ningbo Kaituo Valve Co., Ltd., also known as Ningbo Anke Fire Equipment Co., Ltd., is China Water Spray Nozzles (Deluge / Foam) Manufacturers and Wholesale Water Spray Nozzles (Deluge / Foam) Factory, specializing in the research and development, production and export of fire equipment. It owns the anke brand and a number of national high-tech patents.
Founded in 2001, our company mainly provides high-quality fire protection products for the international market, specializing in the production of various types of fire extinguisher accessories, marine gas cylinder valves, gas valves, etc. After years of hard work and continuous improvement of process reform, our products are exported to dozens of countries around the world and have won a good international reputation. All of our products have obtained the EU EN, CE certification in 2007.
Welcome all customers to call and visit us. Our company has a professional sales team to provide accurate services.
Read More

Certificate

  • Honor
  • Honor
  • Honor
  • Honor
  • Honor
  • Honor

FAQ

An open nozzle lacks a heat-sensitive element (like a bulb or link) and discharges water immediately when the upstream control valve (deluge valve) is activated.

The K-factor is a constant used in hydraulic calculations to determine the flow rate (Q) based on the pressure (P) at the nozzle: Q=KP​.

Spray nozzles are used in deluge systems where simultaneous discharge across the entire hazard area is required, which standard sprinklers cannot provide.

Exposure protection is a system (often using a curtain of water) designed to protect a structure (e.g., a building wall or tank) from the intense radiant heat of an adjacent fire.

A Full Cone provides water coverage across the entire circular spray area, while a Hollow Cone concentrates the water on the outer ring, leaving the center area dry.

Nozzles should be visually inspected quarterly for corrosion, damage, or clogging. Deluge systems require a full operational flow test annually (NFPA 25).

Stainless steel (316) is required in environments with high corrosion risk (salt air, chemicals) or when using foam concentrates which can be corrosive to brass.

Yes, different K-factors and spray patterns can be used in the same deluge system, provided they are all specified and accounted for in the hydraulic calculation.

The Minimum Order Quantity (MOQ) for high-volume brass nozzles is typically 5,000 units.

The orifice plate (internal component) sets the precise K-factor and is carefully machined to ensure the water jet creates the correct spray pattern.