Stainless steel flashback arrestor compression fitting

Detailed Product Introduction

The series instrumentation-grade stainless steel flashback arrestor is a critical safety device designed to prevent backfire and reverse flow in high-pressure, flammable gas distribution networks. Machined from premium bar-stock stainless steel, this in-line safety device is equipped with advanced double-ferrule compression ends, allowing secure, metal-to-metal sealing onto imperial or metric tubing without the need for threads or sealants. Locally integrated within the rugged housing is a high-porosity sintered stainless steel flame-quenching matrix. In the event of a flashback, this matrix rapidly dissipates heat below the gas ignition temperature, safely extinguishing the flame front while an internal non-return check mechanism limits gas backflow. It is widely applied in gas chromatography, laboratory gas manifolds, hydrogen energy infrastructure, and industrial welding systems.

Technical Specifications

• Device Classification: In-line Flashback Arrestor / Flame Arrestor / Gas Safety Valve

• Body Construction: Straight In-line Heavy-Wall Cylindrical Pattern

• Primary Body Material: Premium Stainless Steel 316 (ASTM A276) / SS316L / SS304

• Flame Element Material: Multi-layer Sintered Stainless Steel Mesh Matrix (316L)

• Connection Interface: Dual Ferrule Compression Fittings (Card Sleeve Type)

• Tube O.D. Size Range: 1/4", 3/8", 1/2" or Metric 6mm, 8mm, 10mm, 12mm

• Maximum Working Pressure: Up to 3000 PSI (206 Bar) for specialty gas systems

• Applicable Gases: Hydrogen (H2), Acetylene (C2H2), Methane (CH4), Oxygen (O2), and LPG

• Safety Functions: Flame Quenching (Arresting) and Directional Reverse Flow Prevention

• Extinguishing Principle: High-efficiency thermal absorption via micro-porous matrix structures

• Internal Check Valve: Built-in spring-loaded poppet to seal off backward pneumatic pressure

• Flow Orientation: Unidirectional configuration with permanent laser-etched directional arrow

• Operating Temperature Limits: Highly resilient from -40°C up to +150°C standard exposure

• Cracking Pressure (Check Valve): Low cracking pressure design (approx. 0.1 to 0.3 Bar) for high flow stability

• Leakage Integrity: Rated Helium leak-tested to ≤ 1 x 10⁻⁸ atm cc/sec to prevent gas escape

• Pressure Drop Characteristics: Optimized internal gas channels to maintain minimal Cv loss during process flow

• Surface Cleansing Standard: Cleanroom assembled, oxygen-cleaned, and particulate-free certified

• Mechanical Shock Resistance: High-tensile forged body ensures structural safety against internal explosion impacts

• Standards Compliance: Engineered in alignment with EN ISO 5175-1, BAM standards, and ASME B31.3

• Inspection Protocol: Factory certified via pneumatic pressure hold and functional flow tests before dispatch