Description
. Materials of Construction
| Component | Material | Notes |
| Flexible Tube | Red Brass (Corrugated/Deep-Pitch Tubing) | Provides flexibility and chemical compatibility. |
| Protective Braid | Bronze Wire Braid (High Tensile) | Adds mechanical strength, abrasion resistance, and significantly increases the working pressure rating. |
| End Connections | Brass (Fittings) | Machined brass fittings for tight, leak-proof connections. |
| Seal Integrity | Hermetic (All-Metal Seal) | Eliminates porous packing or diaphragms. |
3. Pressure and Performance Ratings
The exact ratings vary slightly by size, but here are the typical specifications for common sizes 0R 1/4” to 5/8”
| Rating Type | Standard Value (Imperial) | Standard Value (Metric) |
| Maximum Working Pressure (MWP) | 620 – 660 psig | 43 – 46 bar |
| Minimum Burst Pressure | 3100 – 3300 psig | 214 – 228 bar |
| Safety Factor | 5:1 (Burst Pressure / Working Pressure) | Meets or exceeds industry safety standards. |
| Refrigerant Compatibility | Compatible with virtually all refrigerants (CO2, HC, HFO, HFC, HCFC, CFC, etc.) | Wide applicability across modern and legacy systems. |
4. Standard Specifications & Dimensions
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Standard Sizes (Coupler): 1/4”, 3/8”, 1/2”, and 5/8” SAE Flare.
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Standard Lengths: 36 inches (approx. 914 mm) and 48 inches (approx. 1219 mm).
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Connection Configuration (Most Common): MF (Male-Female):
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One end: SAE Male Flare connector.
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Other end: SAE Female Flare Swivel connector of the same size.
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Other configurations (MM, FF) are often available.
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5. Certifications and Testing
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Recognition: Often UL Recognized component for use in refrigeration systems.
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Testing: Each assembly is typically pressure tested and then carefully vacuum leak tested (e.g., using a highly sensitive helium mass spectrometer).
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Cleanliness: Cleaned, dehydrated, and sealed in a plastic film to maintain dryness and cleanliness prior to installation.
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