Pure PTFE Convoluted Bellows Hose for Precision Load Cell Connections

Custom virgin PTFE convoluted bellows hose with 360° loose flanges. Zero-stiffness design eliminates parasitic piping stress on load cells to guarantee 100% weighing accuracy. FDA & CIP ready.

Soshh Ultra Flex Pure PTFE Bellows for Precision Load Cell Connections

Straight virgin PTFE convoluted hose with loose stainless steel flanges for load cell connectionsUltra flexible pure PTFE bellows showing high bend radius for vibration isolation360 degree rotatable lap joint flange face with hot flared 100% pure PTFE sealing endHigh temperature PTFE expansion joint with axial and lateral displacement capabilityUltra flexible pure PTFE bellows showing high bend radius for vibration isolation


Product Overview & Precision Engineering

The Soshh Ultra Flex Pure PTFE Bellows (Series UB-2026) is a specialized zero-stiffness PTFE convoluted hose expansion joint engineered specifically for high-precision load cell weighing systems, gravimetric loss-in-weight feeders, and ultra-pure chemical processing lines.

By utilizing a 100% virgin solid-molded PTFE core without heavy metal braiding or rigid plastic liners, this highly flexible loose flange PTFE connector eliminates mechanical piping stress, thermal expansion forces, and machinery vibration—ensuring your sensitive weighing instruments achieve 100% measurement accuracy with zero calibration drift.

Overcoming Weighing Accuracy & Piping Stress Bottlenecks

In modern automated processing plants, rigid piping connections and stiff braided hoses transfer parasitic forces directly to load cells and weighing hoppers. As process temperatures fluctuate, thermal expansion creates mechanical torque that distorts load cell readings.

How Soshh Ultra Flex Solves This:

  • Zero-Stiffness Convolution Profile: Isolates structural movement entirely, creating a true zero-stress buffering zone between rigid ductwork and weighing sensors.
  • 360° Free-Spinning Loose Lap-Joint Flanges: Equipped with rotatable backing flanges (ASME B16.5 Class 150 / DIN PN16 / JIS 10K). Field installation engineers can rotate the flanges freely during bolt-up, eliminating dangerous torsional stress on the PTFE body.
  • Sanitary & Dead-Leg Free Fluid Path: Features hot-flared sealing faces that cover the flange inner diameter (100% PTFE contact), making it fully CIP/SIP cleanable with zero metal contact and no ion leaching.

Technical Specifications & Engineering Matrix

For instrument engineers, HSE managers, and procurement officers evaluating Total Cost of Ownership (TCO):

Engineering ParameterTechnical SpecificationCompliance & Industry Standards
Product CategoryPure PTFE Convoluted Bellows HoseZero-Stiffness Flexible Expansion Joint
Core Tube Material100% Virgin Molded PTFE / FEP / PFAFDA 21 CFR 177.1550 & USP Class VI
Flange Type & Material360° Loose Lap-Joint Flanges (SUS304 / SUS316L / CS)ASME B16.5 Class 150, DIN PN10/PN16, JIS 10K
Pressure & Vacuum LimitsFull Vacuum (-100 kPa) to +2.0 bar positive pressureVacuum support rings available for high suction
Operating Temperature-70°C to +260°C (-94°F to +500°F)Thermal shock & severe chemical resistant
Static Protection (Optional)Embedded copper wire / SS braid grounding lugsATEX rated for explosive dust & gas zones
Size Range AvailabilityDN15 (1/2") up to DN300 (12") nominal boreCustom length & large-diameter CNC machining
📥 Need 2D CAD Drawings & Custom RFQ Worksheets?Download our comprehensive PTFE Convoluted Hose & Loose Flange Specification Sheet (PDF) to view dimensional PCD tables, pressure ratings, and ordering templates.

Primary Applications & Industry Use Cases

  • Precision Load Cell & Weighing Hopper Connections: Eliminates parasitic piping forces on gravimetric feeders, loss-in-weight batchers, and active weighing platforms.
  • Large Diameter Powder & Bulk Solids Handling: Custom CNC-machined large bore bellows (DN200 to DN300) for cyclone discharges, silos, and rotary valves.
  • High-Purity Pharmaceutical & Food Processing: Sanitary fluid lines requiring FDA and USP Class VI material compliance with dead-leg free design.
  • Aggressive Chemical Dosing & Micro-Metering Pumps: Absorbs high-frequency stroke vibration from diaphragm pumps conveying concentrated acids or solvents.
  • Semiconductor & Ultra-Pure Chemical Transport: High-transparency FEP/PFA options for ultra-pure chemical distribution loops with zero ionic contamination.

Why Partner with Soshh Industrial Engineering?

Every processing line faces unique spatial and thermal challenges. Soshh provides fully customized engineering support, allowing you to define the exact Face-to-Face length (L), Bore Inner Diameter (ID), and Flange PCD Bolt Hole Layout required for your plant retrofit or new OEM equipment integration.


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Pure PTFE Convoluted Bellows Hose for Precision Load Cell Connections
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