The FZT flame arrestor vent cap is an integrated flame arresting and venting device installed on the vent ports of small tanks, fuel oil tanks, or high points of pipelines. It features a built-in stainless steel corrugated plate flame arrestor element, allowing free gas flow in and out of the tank due to pressure changes (breathing) while effectively preventing external flame ingress. The housing is available in aluminum alloy, cast steel, or stainless steel to suit general environments, highpressure or corrosive media, and highly corrosive or highpurity applications respectively. Its core purpose is to provide combined flame arrestor protection and atmospheric venting for small tanks in petroleum, chemical, gas stations, generator fuel tanks, small solvent storage tanks, and day tanks, maintaining tank pressure balance while preventing backfire explosions.

FZT flame arrester vent cap (aluminum alloy, cast steel, stainless steel) product drawing

1. Integrated flame arrestor and venting: Built-in stainless steel corrugated plate flame arrestor element allows normal breathing while effectively quenching external flames, preventing propagation into the tank.

2. Three housing material options: Aluminum alloy (lightweight, weather‑resistant), cast steel (high pressure, impact‑resistant), stainless steel (high corrosion resistance, clean), suitable for various media and installation environments.

3. Large venting capacity with low pressure drop: High porosity (≥90%) of the flame arrestor element minimizes gas flow resistance without affecting normal tank breathing efficiency.

4. Complete protection structure: Top rain cover and insect screen prevent rain, dust, and insects from entering, suitable for outdoor installation.

5. Flexible connection options: Available with pipe threads (such as NPT, G, R threads) or flanged connections, allowing direct screwing onto vent ports for easy installation.

6. Easy maintenance: Removable flame arrestor element for cleaning; periodic removal of carbon deposits or impurities allows reuse without complete replacement.

7. Compact structure and light weight: Small footprint suitable for space-limited small tanks or equipment vent lines.

8. Compliant with relevant standards: Designed and manufactured according to GB 5908, ISO 16852 flame arrester standards and vent cap specifications.