SOSHH® Ultra-Pure PTFE Lined Flexible Hose & Bellows Series
100% Virgin PTFE Fluid Path | Zero Metal Ion Contamination | 360° Rotatable ASME Lap Joint Flanges | Anti-Vacuum -0.4 bar
![SOSHH pure virgin PTFE lined flexible hose with SUS304 braid and ASME Class 150 loose lap joint flanges]()
![360 degree rotatable lap joint flange with 100 percent pure virgin PTFE sealing face and anti vacuum support]()
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![360 degree rotatable lap joint flange with 100 percent pure virgin PTFE sealing face and anti vacuum support]()
📦 Full Pipeline Batch Supply & Custom Length Fabrication
Outfitting an entire chemical processing line or lithium battery electrolyte facility requires flexible connectors tailored to diverse pipe routings and tight space constraints.
SOSHH® Provides Comprehensive Project Supply:
- Custom Installed Lengths: From short expansion joints (200 mm) to long-distance flexible loops (2000 mm+).
- Full Size Range: Standard production for ASME 1/2", 1", 1-1/2", 2", 3", and 4" pipe sizes.
- Multiple Flange Standards: ASME B16.5 Class 150/300, EN 1092-1 PN10/PN16, and JIS 10K loose lap joint configurations available.
- Project Batch Packaging: Individually sealed, capped, and labeled according to your plant’s P&ID line numbers for error-free site installation.
💡 Executive Technical Summary
The SOSHH® Ultra-Pure PTFE Flexible Hose Series is engineered specifically for mission-critical applications where zero chemical contamination and uncompromised gravimetric weighing accuracy are required.
By combining 100% solid-molded virgin PTFE fluid containment with 360° rotatable ASME B16.5 Lap Joint (Loose) Flanges, this system completely eliminates metal ion leaching in aggressive media (such as battery electrolytes LiPF₆, LiBOB) while preventing installation torque from transferring to high-sensitivity scale load cells (<500g tolerance).
📐 Technical Specifications & Pressure Rating Matrix
| Size (Inches) | Inner Dia (mm) | Outer Dia (mm) | Inner Core Profile | Min. Bending Radius | Max Working Pressure | Burst Pressure | Vacuum Rating |
| 1/4" (DN6) | 7.00 | 14.00 | Convoluted Bellows | 25 mm | 35 bar | 170 bar | -0.9 bar (-90 KPa) |
| 3/8" (DN10) | 9.65 | 19.00 | Convoluted Bellows | 25 mm | 35 bar | 170 bar | -0.9 bar (-90 KPa) |
| 1/2" (DN12) | 13.08 | 21.00 | Convoluted Bellows | 50 mm | 50 bar | 250 bar | -0.9 bar (-90 KPa) |
| 3/4" (DN20) | 19.00 | 30.00 | Convoluted Bellows | 55 mm | 60 bar | 200 bar | -0.8 bar (-80 KPa) |
| 1" (DN25) | 25.40 | 38.00 | HC Heavy Convoluted | 85 mm | 40 bar | 210 bar | -0.4 bar (-40 KPa) |
| 1-1/2" (DN40) | 38.00 | 50.00 | HC Heavy Convoluted | 120 mm | 40 bar | 175 bar | -0.4 bar (-40 KPa) |
| 2" (DN50) | 50.80 | 63.00 | HC Heavy Convoluted | 160 mm | 30 bar | 120 bar | -0.4 bar (-40 KPa) |
| 4" (DN100) | 101.60 | 118.00 | Heavy Smooth Bore | 350 mm | 10 bar | 45 bar | -0.4 bar (-40 KPa) |
Note: Flange standards available in ASME B16.5 Class 150/300, EN 1092-1 PN10/PN16, and JIS 10K. Custom lengths from 200 mm to 2000 mm.
🛠️ Key Engineering Features
1. Zero Metal Ion Contamination (Battery & Pharma Grade)
In lithium battery electrolyte manufacturing (LiPF₆, LiBOB, LiBF₄) and organic solvent processing (DMC, EMC), even trace metal ions cause severe chemical breakdown. SOSHH® hoses feature a 100% solid-molded virgin PTFE inner liner with zero internal metal springs, keeping the fluid contact path completely non-reactive.
2. 360° Free-Rotatable Lap Joint Flanges (Zero-Torque Scale Isolation)
Bolting rigid fixed-flange hoses forces technicians to twist the assembly to align bolt holes. This rotational torque creates persistent side-loads on weigh scale load cells, resulting in continuous calibration drift. Our ASME Class 150 Lap Joint Flanges feature a 360-degree free-spinning outer ring, allowing strain-free bolt alignment while maintaining a solid PTFE flared sealing face.
3. Triple-Layer Vacuum Resistance (-0.4 bar / -40 KPa)
To prevent vacuum collapse during negative pressure loops without using internal metallic springs, the SOSHH® HC-Series employs a robust triple-layer construction:
- Virgin PTFE Core: Manufactured to FDA 21 CFR 177.1550 standards with smooth non-stick chemical resistance.
- Helical SS304 Vacuum Wire: External stainless steel spiral wire embedded within convolutions, providing high structural hoop strength.
- High-Tensile AISI 304 Outer Braid: Protective stainless steel mesh preventing thermal expansion and axial stretching.
4. Dual Inner Geometries: Smooth Bore vs. HC Convoluted
- Heavy Smooth Bore (4" / DN100 Focus): Engineered for 15-ton bulk storage tanks and high-flow powder/slurry transfer lines. Eliminates powder traps and reduces friction wear.
- HC Heavy Convoluted Bellows (1" / DN25 Focus): Engineered for N₂ metering bins and ultra-sensitive dosing scales (<500g tolerance), providing maximum axial flexibility and multi-axis displacement absorption.
📜 International Compliance & Material Certifications
- FDA Compliance: FDA 21 CFR 177.1550 (Pure Fluorocarbon Resins)
- USP Class VI: Biological Reactivity Certified (Non-Cytotoxic, Non-Hemolytic for Bio-Pharma)
- ATEX Anti-Static Option: Electrically Conductive Black PTFE Core (Surface Resistance < 10⁶ Ω)
- Sanitary & Industrial Standards: 3A Sanitary Standards | EN 12115 Chemical Hose Standard | RoHS & REACH Compliant
❓ Frequently Asked Questions
Q: How do rotatable lap joint flanges eliminate load cell scale drift on weighing systems?
A: When fixed flanges are bolted, any rotational misalignment twists the flexible sleeve. This mechanical twist exerts constant force on the weigh scale load sensors. SOSHH® 360° rotatable lap joint flanges allow the outer metal ring to turn independently during installation, ensuring zero mechanical torque is transmitted to the load cells.
Q: Why is an external vacuum wire preferred over an internal metal spring for battery electrolytes?
A: An internal metal spring directly contacts aggressive chemicals (LiPF₆), causing corrosion and releasing metallic ions that ruin electrolyte purity. SOSHH® places the helical SUS304 vacuum wire on the outside of the PTFE wall, providing -0.4 bar anti-collapse structural support while keeping the media path 100% pure PTFE.
Q: When should I choose Smooth Bore versus Convoluted PTFE?
A: Choose Smooth Bore for heavy powder drop lines (e.g., 4" / DN100) where eliminating friction and material build-up is critical. Choose Convoluted Bellows for small-diameter dosing lines (e.g., 1" / DN25) where maximum hose flexibility is needed to isolate sensitive load cells (<500g tolerance).
🚀 Request Engineering Technical Packages & Custom Quotes
Upgrade your high-purity chemical and battery processing lines with zero-leak, zero-torque flexible engineering.
👉 [Download SOSHH® Pure PTFE Technical Datasheet (PDF)]
👉 [Request 3D STEP / CAD Specs]
👉 [Apply for a Free Physical Sample Kit]
