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CA-FIRE ZSTW B Type Centrifugal Water Mist Sprinkler Product Introduction

For ZSTW B Type High-Speed Centrifugal Water Mist Sprinkler

0. Company Introduction

CA-FIRE Fire Protection Co., LTD, founded in 2012 and located in Quanzhou, China, specializes in the research, development, and manufacturing of high-quality firefighting equipment. Our products include fire sprinklers (FM certified), hydrants, alarm valves, foam systems, and nozzles (CCC and CE certified). We are committed to providing reliable, durable, and compliant fire protection solutions for residential, commercial, and industrial buildings worldwide.CA-FIRE specializes in high-quality fire protection equipment. We provide a wide range of products to meet diverse fire safety needs, including: Fire Sprinklers; Indoor and Outdoor Fire Hydrants; Alarm Valves, Wet and Deluge Valves; Foam Systems, Foam Bladder Tanks, and Foam Generators; Fire Nozzles, Water Monitors, and Fire Hoses; Hose Reels, Couplings, and Accessories; Valves and Signal Devices. All products are manufactured with strict quality control and meet international fire protection standards. Custom sizes and solutions are available to suit specific project requirements.

1. Product Overview & Core Advantages

1.1 Product Overview

The ZSTW B Type Centrifugal Water Mist Sprinkler (commonly known as high-speed water mist sprinkler) is a core component of automatic sprinkler and water spray fire extinguishing systems. Under a specified water pressure, water flows through the internal centrifugal atomizer, rapidly decomposing into fine water mist droplets that are sprayed outward. This process dilutes vapor, suppresses or extinguishes fires, and reduces explosion risks-making it ideal for combating solid, liquid, and electrical fires. Typically combined with deluge alarm valves to form water mist systems or water-foam spray systems, it is widely used in power plants, transformers, chemical storage tanks, generator rooms, oil tanks, garages, and other high-risk protection areas.

1.2 Core Advantages

Certified Compliance: Meets CCC and CE standards, with strict quality control throughout production, ensuring alignment with global fire safety regulations and local authority requirements.

Superior Atomization Performance: Centrifugal atomizer design produces ultra-fine water mist droplets, enhancing heat absorption efficiency and fire suppression speed while minimizing water damage to protected assets.

Durable & Corrosion-Resistant: Constructed from copper alloy with a polished chrome-plated surface, featuring high strength, strong corrosion resistance, a compact structure, and an exquisite appearance-suitable for harsh industrial environments.

Versatile Configuration: Available in 20 models with K-factors ranging from 12 to 100, spray angles of 90° or 120°, and multiple connection thread sizes (R1/2, R3/4, R1, R1 1/4)-adapting to diverse flow requirements and piping configurations.

Flexible Installation: Supports vertical downward (pendent) or horizontal installation, easily integrating into existing fire protection systems.

Stable Operating Pressure: Nominal pressure of 0.35MPa (minimum working pressure not less than 0.35MPa) ensures consistent atomization effect and reliable fire suppression performance.

2. Technical Specifications

Specification Category	Details
Model Series	ZSTW B Type (ZSTW B12/90, ZSTW B12/120, ZSTW B16/90, ZSTW B16/120, ZSTW B21.4/90, ZSTW B21.4/120, ZSTW B27/90, ZSTW B27/120, ZSTW B33.7/90, ZSTW B33.7/120, ZSTW B43/90, ZSTW B43/120, ZSTW B54/90, ZSTW B54/120, ZSTW B67/90, ZSTW B67/120, ZSTW B80/90, ZSTW B80/120, ZSTW B100/90, ZSTW B100/120)
Connection Thread	ZSTW B12/B16/B21.4: R1/2; ZSTW B27/B33.7/B43/B54: R3/4; ZSTW B67: R1; ZSTW B80/B100: R1 1/4
Discharge Coefficient (K-factor)	12, 16, 21.4, 27, 33.7, 43, 54, 67, 80, 100
Nominal Pressure	0.35 MPa (minimum working pressure ≥ 0.35 MPa)
Spray Angles	90°, 120°
Flow at Nominal Pressure (L/min)	22.5 (K12), 30 (K16), 40 (K21.4), 50.5 (K27), 63 (K33.7), 80 (K43), 101 (K54), 125 (K67), 150 (K80), 187 (K100)
Material	Copper alloy with polished chrome-plated surface
Installation Orientation	Vertical downward (pendent), horizontal
Flow Calculation Formula	Q = K√(10P) (Q=Flow in L/min; K=Flow coefficient; P=Pressure in MPa) Note: Corrected for consistency with actual flow data
Nozzle Type	Open-type
Certifications	CCC, CE

3. Installation & Maintenance Instructions

3.1 Installation Guidelines

Pre-Installation Design: As an open-type nozzle, full-load water supply calculation must be conducted during system design to ensure optimal performance.

Pressure Requirement: To guarantee atomization effect, the system's working pressure must not be lower than 0.35 MPa. Verify pressure compliance before installation.

Pre-Installation Inspection: Confirm the product is intact, free of debris or blockages. Inspect the centrifugal atomizer and spray outlet for any manufacturing defects.

Installation Orientation: Install vertically downward or horizontally as per project design requirements. Ensure the spray direction aligns with the protected area and no obstacles block mist diffusion.

Secure Connection: Use the matching connection thread to fasten the nozzle to the pipeline. Tighten firmly to prevent water leakage, avoiding over-tightening that may damage threads or the atomizer.

System Integration: Connect the nozzle to the deluge alarm valve and associated fire protection system. Conduct a comprehensive pressure test and functional test to confirm smooth water flow and uniform mist distribution.

Blockage Prevention: Ensure the pipeline is thoroughly cleaned before installation to remove sediment, rust, or debris-preventing nozzle clogging that may affect atomization.

3.2 Maintenance Tips

Regular Inspection: Periodically check for nozzle blockages (caused by debris, sediment, or scaling) as blockages will directly impact atomization and fire suppression efficiency. Inspect the nozzle body for corrosion or physical damage.

Cleaning Procedure: If blockages are found, remove the nozzle and clean the centrifugal atomizer and spray outlet with clean water. Avoid using corrosive cleaners that may damage the chrome-plated surface or internal components.

Damage Replacement: Replace nozzles with cracked bodies, deformed atomizers, worn threads, or uneven mist distribution immediately to maintain system reliability.

System-Level Maintenance: Coordinate with regular fire protection system inspections. Ensure the associated deluge alarm valve and pipeline are in good condition; drain residual water if the system is not in use for an extended period.

Storage & Protection: For unused nozzles, store in a dry, ventilated environment to avoid corrosion. Protect installed nozzles from dust, oil, or chemical contaminants during operation.

4. Packaging & Transportation

Our products are carefully packaged using export-standard wooden crates or wooden pallets to ensure safe transportation. This packaging method provides stability, prevents damage during handling, and guarantees that all items arrive at the customer's location in excellent condition.

5. Application Scenarios

Industrial Facilities: Power plants, chemical plants, oil refineries, petrochemical facilities, and industrial workshops (especially for protecting equipment and storage tanks).

Electrical & Energy Sector: Transformers, generator rooms, power distribution stations, battery storage facilities, and electrical control rooms.

Storage & Logistics: Chemical storage tanks, oil tanks, fuel depots, and garages (for vehicles and flammable liquid storage).

Commercial & Public Buildings: Data centers, server rooms, museums, libraries, and high-value asset storage areas (minimizing water damage while suppressing fires).

Specialized Environments: Marine vessels, offshore platforms, and areas with explosion risks (where precise fire suppression is critical).

6. Frequently Asked Questions (FAQ)

Q: What types of fires can this water mist sprinkler extinguish?A: It is designed to suppress or extinguish solid, liquid, and electrical fires, making it suitable for diverse high-risk environments such as power plants, chemical storage tanks, and generator rooms.

Q: Why is the minimum working pressure set at 0.35 MPa?A: A pressure of ≥0.35 MPa is required to drive the centrifugal atomizer and produce fine, uniform water mist. Lower pressure will result in poor atomization, reducing fire suppression efficiency.

Q: How do I calculate the flow rate for my project?A: Use the formula Q = K√(10P), where Q is flow rate (L/min), K is the nozzle's flow coefficient (listed in technical specifications), and P is the working pressure (MPa). For example, a ZSTW B16/90 nozzle at 0.35MPa has a flow rate of 16×√(10×0.35) ≈ 30 L/min.

Q: Can the nozzle be used in closed fire protection systems?A: No. This is an open-type nozzle, specifically designed for water mist systems or water-foam spray systems combined with deluge alarm valves. It is not suitable for closed systems.

Q: How often should the nozzle be inspected and maintained?A: Daily visual inspections are recommended to check for blockages or damage; professional maintenance (including cleaning and functional testing) is suggested semi-annually to ensure optimal performance.

7. Product Comparison Table

Comparison Item	Our ZSTW B Type Sprinkler	Competitor A	Competitor B
International Certification	CCC+CE	Only CE	No key certifications
Material Quality	Copper alloy + chrome plating (corrosion-resistant)	Ordinary copper (no plating)	Plastic+aluminum alloy (prone to damage)
K Factor Range	12-100 (10 options)	16-67 (5 options)	20-50 (3 options)
Minimum Working Pressure	0.35MPa (stable atomization)	0.4MPa (higher requirement)	0.45MPa (poor low-pressure performance)
Installation Flexibility	Vertical/horizontal	Horizontal only	Vertical only
Mist Droplet Fineness	Ultra-fine (excellent heat absorption)	Medium	Coarse (low efficiency)
Connection Thread Options	4 sizes (R1/2 to R1 1/4)	2 sizes (R1/2, R3/4)	1 size (R3/4)
Maintenance Cost (Annual)	$15/unit	$25/unit	$20/unit (frequent clogging)
After-Sales Warranty	2 years + technical support	1 year	No warranty
Compatibility	Compatible with most deluge valves	Limited compatibility	Only for self-branded systems

8. Contact: Dulcia

Email: sales8@ca-fire.com

Tel/WhatsApp: +86 191 6381 1547

WeChat: Dulcia8

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