NRV

NRV is a non return valve designed to help prevent an explosion, fire and dust from travelling through the extraction line from the filter unit back into the production area.

Protection against reverse explosion propagation

Suitable for use in ATEX applications

Designed for ST3 dust applications

Available in diameters from 200 to 550 mm

Non return valve
Available diameters: 200 to 550 mm
Extraction and suction pipework
Need help selecting the correct valve size? Call +385 (0)31 701 211 and our team will help you choose the right NRV configuration.
Product description

Reliable Explosion Isolation

NRV non return valves provide an important layer of protection in industrial dust extraction systems. Installed in the suction line, the valve helps prevent an explosion, fire and dust from propagating from the filter unit back into the production area. The NRV series provides a safe isolation solution for extraction systems handling potentially explosive dust.

Technical data

Specifications

NRV

Diameter Ø 200 mm
Dimensions (W x D x H) 575 x 270 x 510 mm
Dust classification: ST3
Pressure drop at 20 m/s 34 mm H₂O
Weight [kg]: 560
System type: Industrial dust extraction
Advantages

Why NRV

Reverse Propagation Protection

Helps prevent an explosion, fire and dust from travelling from the filter unit back into the production area.

Reliable System Isolation

Provides an effective isolation point between the filtration system and connected production equipment.

Multiple Connection Sizes

Available in six diameters from 200 to 550 mm for integration into different extraction systems.

Broad Industrial Use

Suitable for dust extraction systems in food, wood, metal, chemical, pharmaceutical, recycling and animal feed industries.

Download

Documentation

Technical documentation and certificates

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Are you interested in NRV?

Tell us about your pipe diameter, dust characteristics, airflow and system requirements, and our team will recommend the right NRV configuration and prepare a tailored quote.