RUBBER EXPANSION JOINT WITH PTFE LINING TYPE Ai-1

Product catalog summary

Overview: The document provides technical specifications for the AI-1 type rubber expansion joint with PTFE lining, designed for universal applications in conveying aggressive media such as chemicals, acids, and lyes. It is suitable for compensating axial, lateral, and angular movements, as well as reducing vibration, noise, and thermal or mechanical tension.

Specifications:

Material: EPDM/PTFE, NBR/PTFE with color codes orange and red, stamped 'PTFE-Inliner'.
Operating Pressure: Maximum permissible operating pressure is 10 bar, with a bursting pressure of ≥ 20 bar. For shock loads, the operating pressure should be set 30% lower.
Temperature: Maximum permissible temperature is +100°C. Note that pressure decreases with temperature.
Not suitable for vacuum operation.

Design Features:

Rubber bellows with seamless PTFE lining and rotable flanges.
Flat-convoluted molded bellows made of EPDM with synthetic fiber and wire reinforcement.
Flange drilling for through bolts and a special machined groove for the rubber rim.

Applications: Suitable for the chemical and beverage industries, particularly for conveying aggressive media and compensating for installation inaccuracies.

Certifications: CE (PED 2014/68/EU).

Accessories: Includes an internal guide sleeve of PTFE and a protective cover.

Dimensions and Movement Compensation:

Available in sizes DN 32 to DN 500.
Axial movement: Compression and elongation capabilities vary by size.
Lateral and angular movement: Specified in degrees and millimeters.
Effective bellows cross-sectional area and weight are provided for each size.

Installation and Maintenance: Follow general technical instructions regarding reaction force, moving force, fixed point load, and installation instructions. Subject to technical alterations and deviations from the manufacturing process.

Corrosion Protection: Varies by size, with options including electro-galvanized, anti-corrosion primed, hot-dip galvanized, special varnish, and special coating.

Catalog excerpts

RUBBER EXPANSION JOINT WITH PTFE LINING TYPE Ai-1-1

RUBBER EXPANSION JOINT WITH PTFE LINING TYPE AI-1 UNIVERSAL EXPANSION JOINT DN 32 – DN 500 NOTE Please comply with the general technical instructions regarding reaction force, moving force, fixed point load, installation instructions etc. Subject to technical alterations and deviations resulting from the manufacturing process. STRUCTURE TYPE Ai-1 RUBBER BELLOWS WITH PTFE lining PN 10 Universal expansion joint consisting of a rubber bellows with seamless PTFE lining and rotable flanges Flat-convoluted molded bellows made of EPDM Synthetic fibre reinforcement Wire-reinforced rubber rim Seamless PTFE lining with self-sealing flared ends Material grade* EPDM/PTFE, NBR/PTFE Colour code orange, red with stamp ”PTFE-Inliner“ Chemicals, acids, lyes *Check or inquire about the resistance of the rubber grade to temperature and medium Technical calculation for conveying aggressive media very good chemical resistance resistant to most of the acids and lyes for compensating axial, lateral and angular movement for muffling vibration and noise for reducing thermal and mechanical tension to compensate for installation inaccuracies chemical industry beverage industry Max. perm. operating pressure Bursting pressure Vacuum operation ACCESSORIES Internal guide sleeve of PTFE Protective cover Max. operating pressure to be set 30 % lower for shock loads. *Temperature related decrease of pressure (see technical annex page 198 rubber expansion joint Type A-1). FLANGES / VERSIONS Rotable flanges with stabilizing collar Flange drilling for through bolts Special machined groove for rubber rim Standard ANSI, BS etc. Connection dimensions see technical annex page 213 – 215 Corrosion protection hot-dip galvanized, special varnish, special

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RUBBER EXPANSION JOINT WITH PTFE LINING TYPE Ai-1-2

DIMENSIONS STANDARD PROGRAM Pressure rate Type Ai-1 Universal expansion joint with PTFE lining *DN 32 - DN 125 also available as type Ri-1, length 136, DN 150 - DN 300 also available length 137. **For manufacturing reasons the inner diameter may vary by ± 3 or ± 5 mm MOVEMENT COMPENSATION ∆ ang A* Effective Weight Angular bellows cross movesectional area ment at 10 bar approx. cm2 ± \ degrees kg Please inquire for simultaneous (different) movement *Effective bellows cross sectional area is a theoretical value www.stenflex.com / info@st

Open the catalog to page 2

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