Spark Arrestors
Spark Arrestor is designed to suppress sparks and hot carbon particles discharged from diesel engine exhaust systems, helping reduce fire risks in hazardous industrial environments.
Featuring a multi-stage swirling-flow crushing structure, it processes spark-containing carbon particles while maintaining low exhaust resistance. Made entirely of stainless steel, the device also provides exhaust noise reduction, reduced carbon accumulation, and low maintenance requirements.
It is suitable for diesel generators, diesel fire pumps, and other stationary diesel engines operating in demanding industrial environments.
Work Principle of Spark Arrestors
The Spark Arrestor adopts a multi-stage swirling-flow crushing mechanism to process spark-containing carbon particles in diesel engine exhaust.
Through multiple stages of swirling treatment and particle crushing, larger carbon particles are broken down into fine particles and safely discharged along with the exhaust gas.
This design helps reduce the risk of hot carbon particles escaping directly from the exhaust outlet.

Key Features of Spark Arrestors
1. Low-Resistance Spark Suppression
The Spark Arrestor is designed to suppress exhaust sparks while maintaining low exhaust resistance. Its low-resistance structure helps minimize the impact on normal engine exhaust flow, avoiding unnecessary increases in engine power loss and fuel consumption.
2. Exhaust Noise Reduction
In addition to spark suppression, the product provides exhaust noise reduction during diesel engine operation. It can replace conventional industrial exhaust mufflers in suitable applications, combining spark suppression and noise reduction in one device.
Product Advantages: Spark Arrestor vs. Flame Arrestor
| Item | Spark Arrestor | Flame Arrestor |
|---|---|---|
| Suitable for | High-horsepower stationary equipment: diesel generators and diesel engine fire pumps | Small-horsepower mobile equipment, often for temporary access to hazardous areas |
| Principle & Maintenance | Fragmentation mode, not prone to buildup. Low maintenance cost, long service life | Barrier mode, carbon builds up and blocks easily. High regular maintenance cost, short service life |
| Resistance | Low resistance. No increase in fuel consumption, no loss of output power | High resistance. Increases engine power loss |
| Material | Full stainless steel. Free installation position, suitable for high temperature | Common material. Not resistant to high temperatures or corrosion |
| Noise Reduction | Yes | No |
Spark Arrestor Specifications
Material
Stainless steel 304 (I-B-4 type) / 316 (Ex type)
Hazardous rating
II 2G Ex h IIC T600°C Gc
II 2D Ex h IIIC T600°C Dc
Connection
Flange, inlet and outlet
| No. | Model | Engine displacement (L) | L | DN1 | D2 | D3 | n-d | DN2 | D4 | n-d1 |
|---|---|---|---|---|---|---|---|---|---|---|
| All dimensions in mm | ||||||||||
| 1 | SY-HH-100-I-B-4 | 5 | 1122 | 100 | 170 | 219 | 4-18 | 100 | 170 | 4-18 |
| SY-HH-100-Ex | 5 | 1122 | 100 | 170 | 219 | 4-18 | 100 | 170 | 4-18 | |
| 2 | SY-HH-150-I-B-4 | 12 | 1480 | 150 | 225 | 273 | 8-18 | 150 | 225 | 8-18 |
| SY-HH-150-Ex | 12 | 1480 | 150 | 225 | 273 | 8-18 | 150 | 225 | 8-18 | |
| 3 | SY-HH-200-I-B-4 | 20 | 1860 | 200 | 280 | 377 | 8-18 | 200 | 280 | 8-18 |
| SY-HH-200-Ex | 20 | 1860 | 200 | 280 | 377 | 8-18 | 200 | 280 | 8-18 | |
| 4 | SY-HH-200D-I-B-4 | 25 | 2000 | 250 | 335 | 426 | 12-18 | 250 | 335 | 12-18 |
| SY-HH-200D-Ex | 25 | 2000 | 250 | 335 | 426 | 12-18 | 250 | 335 | 12-18 | |
Application
Spark Arrestor is suitable for diesel engine fire pump sets, generator sets, and containerized power units. It is widely used in industrial environments such as oil and gas facilities, coal mining, grain processing, and cotton handling, where exhaust spark suppression is essential for reducing fire risks and improving operational safety.
Certificate
Spark Arrestors are supported by ATEX-related technical documentation in accordance with Directive 2014/34/EU.

Certificate No.
EUROCERT 24 ATEX 0550
Directive
2014/34/EU (ATEX), Notified Body 1128
Models
SY-HH-100-Ex, SY-HH-150-Ex, SY-HH-200-Ex, SY-HH-250-Ex
Marking
II 2G Ex h IIC T600°C Gc / II 2D Ex h IIIC T600°C Dc
Standards
EN ISO 80079-36:2016, EN ISO 80079-37:2016
Valid
01-08-2024 to 31-07-2034













