PRODUCTS · SPARK ARRESTERS

Spark Aresters – Stop sparks before they reach the filter

Spark arresters are installed upstream of filtration equipment to separate hot particles and coarse spark-carrying material from the air stream before they can enter the filter. They are especially important in welding, cutting and grinding applications where hot particles can create a serious fire risk inside downstream filtration equipment.

3 product ranges
Cubo, Contego and Spark Buster
Up to 15,000 m³/h
airflow capacity
Up to 99%
fire-risk reduction
ABOUT SPARK ARRESTERS

What are spark arresters and when should you use them?

Spark arresters are passive separation devices designed to remove sparks, hot particles and coarse material from an extraction air stream before the air reaches a filter. They are typically installed in the duct between the production process and the filtration unit. As contaminated air passes through the spark arrester, the internal flow path reduces the energy of hot particles and separates heavier material before it can continue toward the filter. Tehno Filter specifically recommends spark arresters for metalworking processes such as cutting, welding and grinding, where a high volume of sparks may be generated.

Why use a spark arrester?

Filters often contain combustible dust deposits or filter media that can be damaged by hot particles. A spark arrester adds a protective stage ahead of the filter, reducing the chance that ignition-capable particles reach the filtration chamber. It should be treated as part of the overall fire and explosion protection concept, not as a replacement for other required protective measures.

KEY FEATURES
Function
Spark and hot-particle separation
Installation
Upstream of the filter
Main applications
Cutting, welding and grinding
System role
Filter protection
Operation
Passive separation
Airflow range
Up to 15,000 m³/h
PRODUCT

Spark arresters in our range

Three product families provide different configurations for protecting filtration systems from hot particles and sparks.

INDUSTRIAL SPARK ARRESTER

CUBO

Cubo is a compact spark arresting device designed to reduce the risk of fire or explosion by separating coarse hot particles before they enter the filtration unit. It is installed upstream of the filter and is intended primarily for metalworking processes where cutting, welding and grinding generate significant quantities of sparks.
2,500–15,000 m³/h · passive spark separation
HIGH-CAPACITY SPARK ARRESTER

CONTEGO

Contego is a spark arresting device developed to protect downstream filtration equipment from hot particles generated during demanding metalworking processes. Like Cubo, it is installed before the filter and is designed to separate coarse particles that could otherwise carry enough heat to ignite accumulated dust or damage filter media.
2,500–15,000 m³/h · metalworking applications
SPARK SEPARATION DEVICE

SPARK BUSTER

Spark Buster is designed to reduce the risk of filter ignition by separating sparks and coarse hot particles from the extraction air stream before they reach the filtration unit. It is intended for the same core applications as the other Tehno Filter spark arrester ranges, particularly welding, cutting and grinding processes with a high spark load.
Filter protection · hot-particle separation · metalworking
Not sure which spark arrester fits your system?
Tell us the process, airflow, duct size and type of sparks or hot particles generated and we will help select the appropriate model and installation position.
APPLICATIONS

Where spark arresters are used

Spark arresters are especially valuable in processes where hot particulate can travel through extraction ducting toward filtration equipment.

WELDING

Reduction of spark carry-over toward cartridge or bag filtration units.

PLASMA CUTTING

Protection of downstream filtration equipment from hot particles generated during thermal cutting.

LASER CUTTING

An additional protection stage between cutting equipment and the filter.

CENTRAL EXTRACTION SYSTEMS

Installed in the duct ahead of the main filter as part of a complete extraction and fire-protection system.

GRINDING

Separation of larger hot particles generated during aggressive grinding and surface preparation.

METAL FABRICATION

Suitable for production areas combining welding, cutting and grinding within one extraction concept.

WHY TEHNO FILTER SPARK ARRESTERS

A simple protection stage before the filter

FILTER PROTECTION

Spark arresters help prevent hot particles from entering the filtration unit and reaching accumulated combustible dust.

PASSIVE OPERATION

The separation principle works through the airflow path and internal geometry without requiring active spark detection for normal operation.

MULTIPLE AIRFLOW SIZES

Cubo and Contego are available in several capacities from 2,500 to 15,000 m³/h.

SYSTEM INTEGRATION

Spark arresters can be integrated with ducting, cartridge filters, bag filters and other protective components in a complete Tehno Filter extraction system.

NEED SPARK PROTECTION?

Tell us what process generates the sparks, the required airflow and which filtration system is installed downstream. Our team will help define the appropriate spark arrester and system configuration.