Universal expansion joint bellows manufactured using stainless steel. we design bellows which gives flexible joints.

Pressure switches are designed to make electrical contact when a set pressure is reached. These switches can be designed to close or open on the pressure rising or falling. Many industries including automotive and diesel use these types of switches to maintain optimum system operation.

Diesel Generator Bellows:

We have capability to manufacture bellows for various diesel engines used in DG sets

Bellow sealed valves are a new type of Industrial Process valves. These valves are popular due to the leakage free performance hence, called Zero Leak Valves or Emission Free Valves.With the application of Bellow seals the gland packing is supplemented by a metallic Bellow cartridge. One end of the Bellow is connected to the valve bonnet and the other end to the stem. The bellow movement is in one plane as the stroke in the valve takes place. With no rotational movements involved the fluid gets sealed to a very high degree. The fluid flows through the bottom part of the valve as per the stem movement takes place. Due to the bellow covering the stem the seal does not contact the stem at all. As the stem is the moving part in the valve it is the source of leakage due to the wear and tear of gland packing. Due to this shielding of the stem by the bellow the valve operated in a leak free zone.

For torque transmission in propulsion and positioning units:

Reliable, flexible and permanently backlash-free shaft coupling

So in short one should use these bellows in following circumstances:

• Excellent misalignment capability (compensation of shaft misalignments)
• Minimum mass moment of inertia
• High torsional rigidity
• High availability due to flexible modular construction
• Simple and fast attachment via one screw
• Nominal torque: 16 up to 700 Nm

The torque on the clamping connection, which is transmitted via frictional locking, is dependent on the hub bore (shaft diameter). For permitted values and detailed information on size selection, please see the Product Catalogue. Metal bellows couplings guarantee a zero backlash torque transmission with extremely high torsional stiffness and a low moment of inertia. Different types of bellows, conical bushings and clamping hubs are available for different applications.

Characteristics of Metal bellows couplings:

• Torque range up to 700 Nm
• high torsional stiffness
• temperatures of up to 350C
• high speed
• optional: stainless steel

Bellow sealed valves are a new type of Industrial Process valves. These valves are popular due to the leakage free performance hence, called Zero Leak Valves or Emission Free Valves.

With the application of Bellow seals the gland packing is supplemented by a metallic Bellow cartridge. One end of the Bellow is connected to the valve bonnet and the other end to the stem. The bellow movement is in one plane as the stroke in the valve takes place. With no rotational movements involved the fluid gets sealed to a very high degree. The fluid flows through the bottom part of the valve as per the stem movement takes place. Due to the bellow covering the stem the seal does not contact the stem at all. As the stem is the moving part in the valve it is the source of leakage due to the wear and tear of gland packing. Due to this shielding of the stem by the bellow the valve operated in a leak free zone.

The life cycle of the metal Bellow is largely dependent on the process of bellow manufacturing. At Pliant Bellows we manufacture them by hydroforming process. The properties achieved by the hydro forming process are far superior as compared to other process like, diaphragm welded bellows or mechanically drawn bellows. It is extremely important that the bellows have the mechanical and metallurgical properties for long cycle life of an bellow to avoid

Metal expansion joints (MEJ) also called compensators or metal / metallic bellow. 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 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 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 bellows is entirely dependent on bellows geometry and material properties.

AXIAL MOVEMENT (+/ MM):

Axial movement is the change in dimensional length of the 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

The hydroforming machine is designed by US Designers and has been manufactured to international quality standards. Bellows formed by hydroforming process are uniform in structure with adequate dimensional accuracy.In a single step, corrugations are formed on an entire metal bellow, which increases the productivity considerably.The properties achieved by the hydroforming process are far superior as compared to mechanically drawn bellows.Metal bellows can be manufactured with a single ply or multiple plies with excellent flexibility, pressure tightness, and little wall thickness reduction.

The hydroforming machine is designed by US Designers and has been manufactured to international quality standards. Bellows formed by hydroforming process are uniform in structure with adequate dimensional accuracy.In a single step, corrugations are formed on an entire metal bellow, which increases the productivity considerably.Metal bellows can be manufactured with a single ply or multiple plies with excellent flexibility, pressure tightness, and little wall thickness reduction.

Universal expansion joint bellows manufactured using stainless steel. we design bellows which gives flexible joints.

Pressure switches are designed to make electrical contact when a set pressure is reached. These switches can be designed to close or open on the pressure rising or falling. Many industries including automotive and diesel use these types of switches to maintain optimum system operation.

Diesel Generator Bellows:

We have capability to manufacture bellows for various diesel engines used in DG sets

Bellow sealed valves are a new type of Industrial Process valves. These valves are popular due to the leakage free performance hence, called Zero Leak Valves or Emission Free Valves.With the application of Bellow seals the gland packing is supplemented by a metallic Bellow cartridge. One end of the Bellow is connected to the valve bonnet and the other end to the stem. The bellow movement is in one plane as the stroke in the valve takes place. With no rotational movements involved the fluid gets sealed to a very high degree. The fluid flows through the bottom part of the valve as per the stem movement takes place. Due to the bellow covering the stem the seal does not contact the stem at all. As the stem is the moving part in the valve it is the source of leakage due to the wear and tear of gland packing. Due to this shielding of the stem by the bellow the valve operated in a leak free zone.

For torque transmission in propulsion and positioning units:

Reliable, flexible and permanently backlash-free shaft coupling

So in short one should use these bellows in following circumstances:

• Excellent misalignment capability (compensation of shaft misalignments)
• Minimum mass moment of inertia
• High torsional rigidity
• High availability due to flexible modular construction
• Simple and fast attachment via one screw
• Nominal torque: 16 up to 700 Nm

The torque on the clamping connection, which is transmitted via frictional locking, is dependent on the hub bore (shaft diameter). For permitted values and detailed information on size selection, please see the Product Catalogue. Metal bellows couplings guarantee a zero backlash torque transmission with extremely high torsional stiffness and a low moment of inertia. Different types of bellows, conical bushings and clamping hubs are available for different applications.

Characteristics of Metal bellows couplings:

• Torque range up to 700 Nm
• high torsional stiffness
• temperatures of up to 350C
• high speed
• optional: stainless steel

Bellow sealed valves are a new type of Industrial Process valves. These valves are popular due to the leakage free performance hence, called Zero Leak Valves or Emission Free Valves.

With the application of Bellow seals the gland packing is supplemented by a metallic Bellow cartridge. One end of the Bellow is connected to the valve bonnet and the other end to the stem. The bellow movement is in one plane as the stroke in the valve takes place. With no rotational movements involved the fluid gets sealed to a very high degree. The fluid flows through the bottom part of the valve as per the stem movement takes place. Due to the bellow covering the stem the seal does not contact the stem at all. As the stem is the moving part in the valve it is the source of leakage due to the wear and tear of gland packing. Due to this shielding of the stem by the bellow the valve operated in a leak free zone.

The life cycle of the metal Bellow is largely dependent on the process of bellow manufacturing. At Pliant Bellows we manufacture them by hydroforming process. The properties achieved by the hydro forming process are far superior as compared to other process like, diaphragm welded bellows or mechanically drawn bellows. It is extremely important that the bellows have the mechanical and metallurgical properties for long cycle life of an bellow to avoid

Metal expansion joints (MEJ) also called compensators or metal / metallic bellow. 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 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 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 bellows is entirely dependent on bellows geometry and material properties.

AXIAL MOVEMENT (+/ MM):

Axial movement is the change in dimensional length of the 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

The hydroforming machine is designed by US Designers and has been manufactured to international quality standards. Bellows formed by hydroforming process are uniform in structure with adequate dimensional accuracy.In a single step, corrugations are formed on an entire metal bellow, which increases the productivity considerably.The properties achieved by the hydroforming process are far superior as compared to mechanically drawn bellows.Metal bellows can be manufactured with a single ply or multiple plies with excellent flexibility, pressure tightness, and little wall thickness reduction.

The hydroforming machine is designed by US Designers and has been manufactured to international quality standards. Bellows formed by hydroforming process are uniform in structure with adequate dimensional accuracy.In a single step, corrugations are formed on an entire metal bellow, which increases the productivity considerably.Metal bellows can be manufactured with a single ply or multiple plies with excellent flexibility, pressure tightness, and little wall thickness reduction.