Cashco Flame Arrestors are critical safety devices that prevent flames from propagating through vapor and gas piping, offering robust protection against deflagration and detonation hazards. Certified to key standards like UL, ATEX, API 2000, and ISO 16852, they ensure dependable performance in oil & gas, chemical, and process industries.

Product Categories & Subcategories

Deflagration Flame Arrestors

• Model 6A00 Series – Inline deflagration flame arrestor (6A00, 6A00-EM, 6A00-HT)
• Model 6C00 – End-of-line deflagration arrestor
• Model 6ZA21 – Liquid-seal deflagration arrestor
• Models 7A00 / 7B00 / 7C00 / 7J00 – Deflagration arrestors with integrated PV relief

Detonation Flame Arrestors

• Model 6B00 Series – Inline detonation flame arrestor
• Model 6E00 – Bidirectional in-line detonation arrestor
• Model 6K00 – High-pressure bidirectional detonation arrestor

Common Features (All Models)

• Certified to ISO 16852, API 2000, and ATEX (select models)
• Carbon steel or 316 SS bodies with stainless flame element cores
• Bidirectional installation, suitable for horizontal or vertical setup
• Replaceable flame element cores, no moving parts
• Recommended semi-annual inspection for core integrity
• Based on quenching gap principle for flame extinction

Category-Wise Features

Model 6A00 Series (Inline Deflagration)

Inline deflagration arrestors suitable for near-atmospheric vapor lines.

Model 6C00 (End-of-line)

• Operating Pressure: Atmospheric
• Operating Temperature: Standard ambient
• Line Sizes: Typically DN50–DN200
• Installation: Vertical orientation, minimal pressure drop
• Compliance: API 2000

Model 6ZA21 (Liquid-seal)

• Operating Pressure: Atmospheric
• Operating Temperature: Ambient to ~200 °F
• Line Sizes: DN100–DN300 (4"–12")
• Maintenance: Requires regular liquid level check

Models 7A00 / 7B00 / 7C00 / 7J00

Deflagration arrestors with integrated pressure/vacuum relief for tank vents.

• Pressure Relief Range: ±6 oz/in² to ±14.7 psig
• Operating Temperature: Up to 212 °F
• Line Sizes: DN50–DN300 (2"–12")
• Compliance: API 2521, ATEX

Model 6B00 Series (Inline Detonation)

• Operating Pressure: Up to 110–160 kPa abs (~16–23 psia)
• Operating Temperature: ≤ 60 °C (140 °F)
• Line Sizes: DN40–DN200 (1½"–8"); PN10 / 150#RF flanges
• Compliance: ISO 16852, ATEX

Model 6E00

Bi-directional detonation arrestors for dual-flow high-speed pipelines.

• Operating Pressure: Up to 150 psig
• Operating Temperature: Up to 400 °F
• Line Sizes: DN50–DN200 (2"–8"); flanged ANSI 150# or PN10
• Compliance: UL, ISO 16852

Model 6K00

• Operating Pressure: Up to 275 psig
• Operating Temperature: Up to 400 °F
• Settings: +5 to +50 mbar, −2.5 to −50 mbar (vacuum)
• Line Sizes: DN80–DN200 (3"–8")
• Compliance: ATEX, ISO 16852

Applications

• Petrochemical pipelines
• Tank and flare venting
• Biogas systems
• Compressor discharge/suction lines
• Process vessel vents

Notable or Unique Features

• Detonation-grade models rated to 160 kPa abs / 275 psig protection
• High-temp units function up to 400 °F
• Horizontal or vertical configurations available
• Replaceable element cores reduce lifecycle costs
• Unique liquid-seal version (6ZA21) allows passive flame suppression

Why Choose Cashco Flame Arrestors

• Certified compliance (API, UL, ATEX, ISO)
• Comprehensive product range for deflagration and detonation
• Flexible installation: inline, end-of-line, tank vents
• Replaceable cores for easy upkeep
• Robust construction for harsh environments

Conclusion

Cashco Flame Arrestors offer certified, reliable flame protection with flexible configurations and easy maintenance. Whether securing low-pressure vapor lines or high-pressure pipelines, they deliver trusted safety performance across industries.