Metal Bellows
Metal Bellows
Metal Bellows
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Metal expansion joints (MEJ) also called compensators or metallic Bellows or metal bellows. An expansion joint/bellow element employed in a piping system is an assembly of generally more than one convolute in series with the shape of the convolution designed to withstand the internal pressures, Thermal expansion, mechanical vibrations of pumps, draft fans, compressors, turbines, motors, vessels and other plant components, but flexible enough to accept axial, lateral, and angular deflections. They consist of one or more metal bellows. Metal expansion joints have to be designed according to rules laid out by EJMA (expansion joint manufacturing association).For Fabric & Rubber expansion joints there are guidelines and a state-of-the-art description by FSA (fluid sealing association). Expansion joints are differentiated according to the three basic types of movement: axial, angular and lateral expansion joints. The central component of each expansion joint is the metal bellows. Due to its shape and thin wall, acts like a spring. The metal bellows however has to meet the following basic criteria to qualify for its use as an expansion element.

It must :
• Withstand the operating and test conditions (pressure, temperature).
• Ensure corrosion resistance.
• Provide sufficient flexibility for the purpose.
• Include sufficient squirm stability.

MOVEMENTS & SPRING RATES:

There are four basic movements that can be applied to a metal bellows. These are Axial, Lateral, Angular and Tensional. Respective spring rates are - Axial spring rate, Lateral spring rate, Angular spring rate. The spring rate of a metal bellows is entirely dependent on metal bellows geometry and material properties.

AXIAL MOVEMENT (+/? MM):

Axial movement is the change in dimensional length of the metal bellows from its free length in a direction parallel to its longitudinal axis. Compression is always expressed as negative (?) and extension as positive (+). The units for axial spring rates displayed in N/mm.

LATERAL MOVEMENT (+/? MM):

This relative displacement of the two ends of an Expansion Joint perpendicular to its longitudinal axis. This has been referred to as lateral offset, lateral movement, parallel misalignment, direct shear or transverse movement.

ANGULAR MOVEMENT (+/? DEGREES):

This displacement of the longitudinal axis of the Expansion Joint from its initial straight line position into a circular arc.

TYPES OF EXPANSION JOINTS:

  • • Axial Expansion Joint
  • • Lateral Expansion Joint
  • • Hinge Expansion Joint
  • • Gimbal Expansion Joint
  • • Inline Pressure Balanced Expansion Joint
  • • Elbow Pressure Balanced Expansion Joint
  • • Externally Pressurized Expansion joint
  • • Two ply testable bellow
  • • Rectangular Expansion Joint
  • • Slip Type Expansion Joint

Pliant Bellows ( Kwality Products ) is a leading Manufacturer of Metal Bellows from Pune, India.

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Pliant Bellows ( Kwality Products )
Pune, Maharashtra
Pliant Bellows ( Kwality Products )_Logo
Final plot no.38/1 Ramtekdi Industrial Estate Hadapsar, Pune - 411013, India

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Metal expansion joints (MEJ) also called compensators or metallic Bellows or metal bellows. An expansion joint/bellow element employed in a piping system is an assembly of generally more than one convolute in series with the shape of the convolution designed to withstand the internal pressures, Thermal expansion, mechanical vibrations of pumps, draft fans, compressors, turbines, motors, vessels and other plant components, but flexible enough to accept axial, lateral, and angular deflections. They consist of one or more metal bellows. Metal expansion joints have to be designed according to rules laid out by EJMA (expansion joint manufacturing association).For Fabric & Rubber expansion joints there are guidelines and a state-of-the-art description by FSA (fluid sealing association). Expansion joints are differentiated according to the three basic types of movement: axial, angular and lateral expansion joints. The central component of each expansion joint is the metal bellows. Due to its shape and thin wall, acts like a spring. The metal bellows however has to meet the following basic criteria to qualify for its use as an expansion element.

It must :
• Withstand the operating and test conditions (pressure, temperature).
• Ensure corrosion resistance.
• Provide sufficient flexibility for the purpose.
• Include sufficient squirm stability.

MOVEMENTS & SPRING RATES:

There are four basic movements that can be applied to a metal bellows. These are Axial, Lateral, Angular and Tensional. Respective spring rates are - Axial spring rate, Lateral spring rate, Angular spring rate. The spring rate of a metal bellows is entirely dependent on metal bellows geometry and material properties.

AXIAL MOVEMENT (+/? MM):

Axial movement is the change in dimensional length of the metal bellows from its free length in a direction parallel to its longitudinal axis. Compression is always expressed as negative (?) and extension as positive (+). The units for axial spring rates displayed in N/mm.

LATERAL MOVEMENT (+/? MM):

This relative displacement of the two ends of an Expansion Joint perpendicular to its longitudinal axis. This has been referred to as lateral offset, lateral movement, parallel misalignment, direct shear or transverse movement.

ANGULAR MOVEMENT (+/? DEGREES):

This displacement of the longitudinal axis of the Expansion Joint from its initial straight line position into a circular arc.

TYPES OF EXPANSION JOINTS:

  • • Axial Expansion Joint
  • • Lateral Expansion Joint
  • • Hinge Expansion Joint
  • • Gimbal Expansion Joint
  • • Inline Pressure Balanced Expansion Joint
  • • Elbow Pressure Balanced Expansion Joint
  • • Externally Pressurized Expansion joint
  • • Two ply testable bellow
  • • Rectangular Expansion Joint
  • • Slip Type Expansion Joint

Metal Bellows

Metal expansion joints (MEJ) also called compensators or metallic Bellows or metal bellows. An expansion joint/bellow element employed in a piping system is an assembly of generally more than one convolute in series with the shape of the convolution designed to withstand the internal pressures, Thermal expansion, mechanical vibrations of pumps, draft fans, compressors, turbines, motors, vessels and other plant components, but flexible enough to accept axial, lateral, and angular deflections. They consist of one or more metal bellows. Metal expansion joints have to be designed according to rules laid out by EJMA (expansion joint manufacturing association).For Fabric & Rubber expansion joints there are guidelines and a state-of-the-art description by FSA (fluid sealing association). Expansion joints are differentiated according to the three basic types of movement: axial, angular and lateral expansion joints. The central component of each expansion joint is the metal bellows. Due to its shape and thin wall, acts like a spring. The metal bellows however has to meet the following basic criteria to qualify for its use as an expansion element.

It must :
• Withstand the operating and test conditions (pressure, temperature).
• Ensure corrosion resistance.
• Provide sufficient flexibility for the purpose.
• Include sufficient squirm stability.

MOVEMENTS & SPRING RATES:

There are four basic movements that can be applied to a metal bellows. These are Axial, Lateral, Angular and Tensional. Respective spring rates are - Axial spring rate, Lateral spring rate, Angular spring rate. The spring rate of a metal bellows is entirely dependent on metal bellows geometry and material properties.

AXIAL MOVEMENT (+/? MM):

Axial movement is the change in dimensional length of the metal bellows from its free length in a direction parallel to its longitudinal axis. Compression is always expressed as negative (?) and extension as positive (+). The units for axial spring rates displayed in N/mm.

LATERAL MOVEMENT (+/? MM):

This relative displacement of the two ends of an Expansion Joint perpendicular to its longitudinal axis. This has been referred to as lateral offset, lateral movement, parallel misalignment, direct shear or transverse movement.

ANGULAR MOVEMENT (+/? DEGREES):

This displacement of the longitudinal axis of the Expansion Joint from its initial straight line position into a circular arc.

TYPES OF EXPANSION JOINTS:

  • • Axial Expansion Joint
  • • Lateral Expansion Joint
  • • Hinge Expansion Joint
  • • Gimbal Expansion Joint
  • • Inline Pressure Balanced Expansion Joint
  • • Elbow Pressure Balanced Expansion Joint
  • • Externally Pressurized Expansion joint
  • • Two ply testable bellow
  • • Rectangular Expansion Joint
  • • Slip Type Expansion Joint

Kwality Products From Pune Maharashtra established in 1975, exclusively with a prime objective to manufacture world-class Expansion Bellows, Bellow Couplings & Metal Bellows manufacturer in India with the brand name Pliant Bellows, has now become a globally accepted provider of flexible piping systems exporting to more than 40 countries with a wide installation base covering almost all industrial sectors including and diverse as nuclear power and space programs. Our adherence to the highest standards of quality and precision makes us experts in Flexible Piping Systems. Supporting this dedication to quality is our ISO-9001:2015 certified system for designing, manufacturing, and testing armed and equipped with the latest state-of-the-art technology. The majority of our Expansion Bellows, Expansion Joints and Metal Bellows products are customized solutions. It means that we design and produce pipe expansion joints or metal expansion joints in accordance with close interaction with the customer requirements. Furthermore, we are often involved with our customers in the design and development of new products for challenging applications.

All major industrialized manufacturing processes that require piping and changes in temperature trust upon our expansion bellows or Metal Bellows products and services, Petro Chemical, Power generation, Fuel Cell Power Systems, Electrical Distribution Market, Industrial Gases, Chemical Processing, Oil and Gas Distribution, Utility piping, Solar Technology, Steel, Cement, Shipbuilding to name a few. Under the guidelines of standards, Pliant Bellows offers a complete range of metal expansion joints with the ability to design joints to every individual customers requirements. Pliant bellows expansion joints carry additional safety factors to ensure the long fatigue life of Metal expansion bellows. Though we offer a wide range of flexible components, were especially proud of our Metal Bellows Expansion joints. These metallic bellows expansion joints and allied products enjoy high recommendations from our global. Design calculations are performed using design software developed in-house and calculations are further checked using hand calculations.

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To: Pliant Bellows ( Kwality Products )

Seller Contact Details

Pliant Bellows ( Kwality Products )

Anand Uttarkar

Final plot no.38/1 Ramtekdi Industrial Estate Hadapsar, Pune - 411013, India

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