Brass DOT Male Elbow

DOT-certified male elbow adapters enable 90° connections between nylon tubing and female NPT ports in commercial vehicle air brake systems. Featuring male NPT threads on one end and compression fittings on the other, these adapters meet FMVSS 121 safety standards.

DOT Approved Compression Fittings

Material: Corrosion-resistant brass Thread Types: NPT, BSPP, Metric Temp Range: -60°C to +300°C (high-grade) Pressure Tolerance: 100 bar static / 50 bar dynamic Compliance: DOT FMVSS 121, SAE J1455

DOT 90° Male Elbow Adapter

Core Functionality

• Space-Optimized Routing
  90° directional change navigates frame cross-members, engine blocks, and chassis obstacles while maintaining FMVSS 121 compliance.
• Universal Interconnection
  Nylon End: SAE J844-compliant compression fitting
  Threaded End: Male NPT (tapered thread)
  Bridges flexible nylon tubing with female-threaded valves, cylinders, or reservoirs.

Step-by-Step Assembly

• Tube Preparation
  » Cut nylon tubing squarely with tube cutter
  » Deburr internally/externally (critical for seal integrity)
• Nut Orientation
  » Slide compression nut onto tube before insertion
  » Ensure nut threads face adapter body (Direction “A” → )
• Insertion & Verification
  » Insert tube vertically until bottomed-out in fitting
  » Confirm full insertion with depth gauge tool
  » Hand-tighten nut before final torque (15 Nm ±10%)

Performance Benefits

• Leak Prevention: Precision-machined threads + factory-calibrated torque = Zero-sealant installation
• Extended Service Life: Brass body resists galvanic corrosion between dissimilar metals
• FMVSS 121 Compliance: Validated for 200 PSI operating pressure / 4,000+ vibration cycles

DOT Fittings Specification

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