Unidirectional explosion-proof valve, also known as pipeline explosion-proof valve, is installed on the powder airflow pipeline. During normal operation, the valve disc automatically opens due to the forward direction of the pipeline, allowing the airflow and materials inside the pipeline to pass through in one direction. When a dust explosion occurs inside the downstream protected equipment, the valve disc is quickly closed by the shock wave of the explosion flame, and is locked by a self-locking mechanism to prevent the spread of flame and pressure, isolating and limiting the explosion within a certain area. Avoiding the spread of dust explosions to other equipment, causing secondary or multiple explosions. After the explosion, please manually reset to resume operation.

Common combustible dust:

(1) Metal industry (magnesium, titanium, aluminum powder, etc.)

(2) Coal industry (activated carbon, coal dust, etc.)

(3) Synthetic materials industry (plastics, dye dust, etc.)

(4) Forest product industry (paper dust, wood dust, etc.)

(5) Grain industry (flour, starch, etc.)

(6) Agricultural and sideline product processing industry (cotton dust, tobacco dust, sugar dust, etc.)

(7) Feed industry (blood meal, fish meal, etc.)

Technical features:

Suitable for dust explosion index St1 and St2 levels (St3, please consult the manufacturer)

Suitable for dust explosion hazardous areas in zones 20, 21, and 22

Common materials: carbon steel or stainless steel

Installation method: Horizontal installation at 0 °

Installation distance: 3-7m

Designed with an inspection cover for easy maintenance and upkeep

Optional valve disc closing alarm device

Used in organic dust and metal dust

The product complies with EN16447-2014 standard

Provide testing reports from domestic third-party authoritative institutions