Rectangular Metal Expansion Joints REF:MEJ-SQ

DESCRIPTION

Rectangular metal expansion joints are designed to absorb movements caused by thermal expansion and/or mechanical vibration in duct systems.

DESIGN

The flexible element of the metallic expansion joints is the bellows, which is regularly manufactured in austenitic stainless steels AISI 304, 304L, 316, 316L, 316Ti, 321, 347; or in special alloys such as Inconel®, Incoloy®, Monel® or Hastelloy®.

Metal expansion joints, reference MEJ-SQ, are manufactured by Flexilatina of Colombia. Their most common shape is rectangular, although we also make them square, hexagonal or octagonal. This flexible accessory is designed to cushion, absorb and compensate movements caused by thermal expansion and/or vibration. The main objective is to provide flexibility in ducts and lower the stresses created in a system.

The MEJ-SQ expansion joint designs are made following the manufacturing and quality criteria of EJMA and ASME Section VIII division 1 and 2.

The most important part of an expansion joint is the bellows, which must be strong and flexible to withstand axial compression and/or elongation, lateral or transverse and/or angular movements. This type of joint is manufactured including in its design a refractory material box, this design extends the service life of the bellows and allows the use of less expensive materials, being much less costly.

This design extends the life of the bellows and allows the use of less expensive materials, being much lower the temperature that reaches the bellows.

Simple type: The simple type bellows corner design is the most commonly used in the manufacture of standard rectangular gaskets.

Chamber Type: Chamber type bellows corner design provides greater flexibility in systems with more cyclic conditions.

DESIGN FEATURES:

• Maximum temperature: 1200 °C Maximum pressure: < 7 psi.
• Fatigue life: ≥ 1000 cycles.

MOVEMENTS:

• – Axial, compression and extension.
• – Lateral, horizontal and vertical deflection.
• – Angular movement
• – Mechanical vibrations.

MATERIALS:

• – Connections: ASTM A 36, ASTM A 240 TP 304 AND ASTM A 240 TP 316 among the most common.
• – Rectangular bellows: AISI 304, 304L, 316, 316L, 316Ti, 321, 347 or in special alloys such as Inconel®, Incoloy®, Monel® or Hastelloy®.
• – Guide pipe AISI 304, 304L, 316, 316L, 316Ti, 321, 347 or in special alloys such as Inconel®, Incoloy®, Monel® or Hastelloy®.

ADVANTAGES

• – High flexibility.
• – High capacity to absorb movements caused by thermal expansion.
• – High durability.
• – Excellent chemical resistance.
• – Absorb movements caused by thermal expansion in several directions.
• – Isolates or reduces vibrations.
• – National manufacture.

Application

Indicated in industries and processes such as:

• – Power generation.
• – Waste incineration.
• – Marine, onshore and offshore.
• – Bio-mass plants.
• – Cement plants.
• – Cogeneration plants.
• – Fossil fuel plants.
• – Nuclear power plants.
• – Pulp and paper plants.
• – Gas turbine plants.
• – Primary metals processing.
• – Chemical and petrochemical.
• – Pollution abatement systems.
• – Steam / heat / dust recovery.