ZFQ explosion-proof flame retardant breathing valve is a safety protection device installed on the top of a fixed top storage tank for flammable and explosive liquids, integrating pressure/vacuum automatic adjustment and flame retardant function. When the pressure or vacuum degree inside the tank exceeds the set value, the positive pressure valve disc or negative pressure valve disc automatically opens to balance the internal and external pressure difference; At the same time, the built-in fire-resistant layer can effectively prevent external flames from entering the tank and prevent the spread of fire. This valve is mainly used for respiratory protection of flammable and explosive liquid storage tanks (such as gasoline, benzene, alcohols, etc.) in industries such as petroleum and chemical. Its core purpose is to automatically adjust the tank pressure while blocking flame propagation, ensuring the safe operation of the tank and complying with explosion-proof and fire prevention regulations.

Product Drawing of ZFQ explosion-proof flame arrester breathing valve

1. Integrated explosion-proof and flame arrestor design: Combines breather valve and flame arrestor functions with built-in stainless steel corrugated plate flame arrestor layer to effectively block external flame propagation.

2. Independent dual disc operation: Pressure disc and vacuum disc operate independently for precise set-pressure relief and set-vacuum intake control.

3. Reliable sealing with set pressure operation: Disc and seat adopt hard seal or composite soft-hard seal, with stable opening and reseating pressures and zero leakage when closed.

4. All-weather protection structure: Rain and dust cover on top with internal drain slots prevent water accumulation, suitable for harsh environments.

5. Corrosion-resistant materials: Body available in aluminum alloy, cast steel, or stainless steel; discs and flame arrestor core in stainless steel for corrosive media.

6. Large ventilation capacity with low pressure drop: Optimized flow path ensures low breathing resistance and stable tank pressure during rapid filling or discharging.

7. Easy maintenance: Removable flame arrestor core for cleaning, simple disc assembly disassembly for periodic inspection.

Structure Diagram of ZFQ explosion-proof flame arrester breathing valve

Component name and material

Performance Specification Sheet

ZFQ explosion-proof flame arrester breathing valve Outline Drawing

Outline dimension table