Technologies Used By Pliant Bellows For product Manufacturing

Pliant Bellows is the brand name of roars made by Kwality Products. Kwality Products has been doing business since 1975. The organization has developed to be one of the best assembling SME in India. It was begun as a vocation working unit to provide food the car business for its need in support movement. Over a timeframe it got included being developed of import substitute items in India. With its genuineness, responsibility and polished skill it was granted the keepsake and thankfulness from the Indian resistance research association. As time proceeded onward it got included in the assembling of aviation parts and maybe is the main little scale organization affirmed by Rolls Royce, USA for its helicopter motor segments in India. In year 2011 the organization spread to frame a joint endeavor organization with a Belgian accomplice to fabricate metal seals in India. 

Mean while the organization ran over different clients who needed metal Bellows of worldwide quality measures. With our rich involvement in fantastic items required in fluctuated scope of industry from atomic, Oil and gas, ultra high vacuum, material, safeguard et cetera, the organization came in the business sector with its item Metal Bellows under the brand name,  “Pliant Bellows”. The company decided to go for machines with world class standards (all the Bellow forming machine designs are prepared by US based designers and manufactured to international quality standards). The company is ISO 9001:2008 certified and is ready to serve all type of industry.

Pliant Bellows are manufactured using state of the art machines. The formed bellows are manufactured mainly by 2 types of processes.

1 ) HYDRO FORMING

·         The sheet (SS304L, SS16L, SS316Ti, SS321 and special alloys) is procured along with its test certificates from reputed suppliers.

·         The lot number is assigned for complete traceability of product from inward to dispatch.

·         The sheet is roll formed.

2 ) MECHANICAL EXPANDER

·         The sheet (SS304L, SS16L, SS316Ti, SS321 and special alloys) is procured along with its test certificates from reputed suppliers.

·         The lot number is assigned for complete traceability of product from inward to dispatch.

·         The sheet is roll formed.

Metal Bellows

BELLOWS DESIGN :

The bellows is the flexible element of the expansion joint. It must be strong enough circumferential to withstand the pressure and flexible enough longitudinally to accept the deflections for which it was designed, and as repetitively as necessary with a minimum resistance. This strength with flexibility is a unique design problem that is not often found in other components in industrial equipment.

Metal Bellows Design

Most engineered structures are designed to inhibit deflection when acted upon by outside forces. Since the bellows must accept deflections repetitively, and deflections result in stresses, these stresses must be kept as low as possible so that the repeated deflections will not result in premature fatigue failures. Reducing bending stress resulting from a given deflection is easily achieved by simply reducing the thickness of the bending member, which in the case of the bellows, is the convolution. However, in order to withstand the pressure, the convolution, which is also a pressure vessel, must have a thickness great enough that the pressure induced membrane stresses are equal to or less than the allowable stress levels of the materials at the design temperatures. This conflicting need for thickness for pressure and thinness for flexibility is the unique design problem faced by the expansion joint designer.

Howls are not springs, in that the vast majority of their redirection produce bowing anxieties in overabundance of the materials' yield quality. Seeing how different materials perform and their capacities in this "plastic" distortion locale requires years of experience and plan conditions based upon this exact comprehension. 

That howls routinely work "plastic-ally" ought not be a reason for worry, subsequent to the majority of the materials from which cries are made offer comparable exceptionally malleable qualities. Specifically, the perseverance furthest reaches of these materials, which can be approximately portrayed as the anxiety at which disappointment will happen at ten million cycles of rehashed focusing, is about the same as their yield stress, or the time when perpetual distortion will happen. A cries which is required to withstand 3000 cycles of a given redirection and weight, and which at last falls flat after 10,000 cycles, has unquestionably exhibited more than worthy execution. Nonetheless, it has encountered, amid every last cycle, twisting burdens far in overabundance of as far as possible and along these lines the yield stress, and once avoided, would not have returned all alone to their unique un-deflected length or shape, as a spring is required to do. At the end of the day, they would have "taken a set."

Products  :

1) Bellows Coupling.

2) Valve Bellows.

3) Pressure switches Bellows.

4) Axial Expansion Joints.

5) Lateral Expansion Joints.

6) Hinged Expansion Joints.

7) Gimbal Expansion Joints.

8) Inline Pressure Balanced Expansion Joints.

9) Elbow Pressure Balanced Expansion Joints.

VALVE BELLOWS

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 hydro forming 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

Valve Bellows Manufacture in India | Pune, Valve Bellows  in India | Pune valve bellows  is a device, which arranges and controls the surge of fluid (slurries, fluidized solids, liquids, and gasses) by closing, opening or to some degree blocking various ways. Really, the Valves Bellows are known as a pipe fitting yet consistently discussed in discrete class.

The fundamental vision of Micro finish is to give wonderful administrations to the clients, give top quality valves, lastly meet the exceptional time point of confinement of the client.

Bellows Couplings – Flexibility and Accuracy for Motion Control Applications

Bellows Couplings – Flexibility and Accuracy                for Motion Control Applications

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 misalignment)
• 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 Catalog. 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.

BELLOWS COUPLINGS

CHARACTERISTICS OF METAL BELLOWS COUPLINGS:

1. Torque range up to 700 Nm
2. high torsional stiffness
3. temperatures of up to 350°C
4. high speed
5. optional: stainless steel

OUR PRODUCTS

Elbow Pressure Balanced Expansion Joint

An Elbow Pressure Balanced Expansion Joint is designed to absorb externally imposed axial movement without imposing pressure loading on the system. This is accomplished by using two bellows both at line pressure tied together and acting in opposite directions. It is used where pressure loading on piping or equipment is not acceptable.

UNIVERSAL EXPANSION JOINT

Universal expansion joints is made up of 2 elements of bellows joined together by a common spool piece so it is also called as Double Bellows Expansion Joint or Universal Bellows. A Universal Expansion Joint is generally used where more lateral movement is to be absorbed which is beyond the capacity of a single Axial Expansion Joint and when there is a limitation on the amount of lateral forces allowed by the connecting pipe system Universal expansion joints can take deflection in lateral, axial or angular movements.

Universal expansion joints




The universal expansion joint consists of two bellows separated by a pipe section or spool. The primary purpose of this arrangement is to have a unit which will accept large amounts of lateral deflection.

The amount of lateral deflection they can accept is a function of the amount of angulation. These joints have no restrains to resist pressure thrust like the axial. For a given bellows element, the amount of lateral deflection capability be increased or decreased by simply changing the length of the center spool.

A universal expansion joint is composed of two bellows connected by a common pipe or center spool. This type of assembly allows any combination of the three basic movements: axial, lateral and angular. A universal expansion joint is generally used In cases with more lateral movement than can be absorbed by a single axial expansion joint, or when there is a limitation on the amount ot lateral forces allowed by the connecting pipe system. The lateral movement capability of e universal expansion joint depends on the centro spool length. When using a universal expansion joint, anchors must be sufficiently designed to withstand the full thrust forces .

How to Improve Control Valve Bellows in Your Plant

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 hydro forming 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

valve-bellows

Replace Valves as Needed

Finally, valves need to be replaced regularly to ensure optimum operation and safety. So once the valves in your system start to emit signs of trouble, it’s best to replace them with a new part immediately. Failure to do so will result in ultimate system failure.

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HINGED EXPANSION JOINTS

When the angular movement is only in one plane hinge or angular expansion joints are used. An angular expansion can be expressed when an expansion joint experience bending about its center which is the center line and half way between the ends of metal bellows.

                          HINGED EXPANSION JOINTS

LATERAL EXPANSION JOINT

WHY DO I NEED A LATERAL EXPANSION JOINT

Lateral expansion joints

Parallel development joints allude to the bearing opposite to the inside line of the funnel extension joint. Horizontal diversion is additionally called as PARALLEL OFFSET and TRANSVERSE. The horizontal extension joint are otherwise called Tied Lateral development joints or Tied general extension joints. 

In case of engrossing vast measure of Lateral avoidance widespread development joints 2 cries are associated by an inside spool (bit of channel) and the tie poles are then appended on the external finishes for greatest diversion retention. The length of focus spool (focus piece) assumes a noteworthy part. On the off chance that the heaviness of focus spool is huge it is upheld by drags. The advantage of the Tied all inclusive development joint is it can be utilized as a part of spot where the channeling joints are not in one spot.

Similarly, the double expansion joint is simply an extension of the single variant, and consists of two simple joints connected by an anchor support. It is applicable when the expected axial movements would be much too significant for a single joint by itself, and features prominently in long pipelines.

    Metallic expansion joints are primarily used for:

• Fossil fuel power generation
• Pressure vessel manufacturing
• Desalination power plant
• Petrochemical industry
• Oil refineries industry
• Chemical and pharmaceutical industry
• Marine applications
• District heating
• Pulp and paper
• Iron and steel mills
• Cryogenics industry
• Automotive industry
• Instrumentation industry
• Waste water treatment

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AXIAL EXPANSION JOINTS

WHY DO I NEED A AXIAL EXPANSION JOINTS :

This kind of expansion joints are the slightest troublesome and most commonsense joint. It is used where minimal warm improvements exist. The prime purpose of inclination of crucial augmentation metal roars is, the orientation of the stream is bidirectional nearby their insignificant size. These roars are for the most part made in SS304L, SS316L, SS316Ti and SS321. On the off chance that there ought to emerge an event of phenomenal essentials they can be made in Inconel and other nickel based mixes.
Hub extension metal roars ought to be introduced co-pivotally with the channels centerline. The reason for this roars is to repay hub developments. With the presence of pivotal developments sought cyclic life can be accomplished. On the off chance that incase there exist different developments like rakish or sidelong this will influence the cyclic existence of Bellows. By and large there extension joints are utilized between straight pipes where development is parallel to the centerline of funnel line.

axial expansion joints

Expansion joints are extremely important because they allow for the accommodations of temperature changes. Changes in temperature can cause problems or destruction. This article will discuss some of the basics of expansion joints.

SO IN SHORT ONE SHOULD USE THESE BELLOWS IN FOLLOWING CIRCUMSTANCES:

Movement compensation is in straight line.

Minute lateral/Angular movement can be adjusted but will affect the cyclic life of the expansion joint.

Bellows are not designed to absorb rotary movements.

Due to the line pressure between the piping systems numbers of expansion joints are required.

The best piping system is the once which is broken between intermediate stages with metal bellows at each stage axial expansion joints In case if the expansion/contraction rate is higher than the bellows capacity 2 Bellows with a center foot in between can be used. There 2 bellows are placed between the center of the pipes so that the axial movements from each ends of pipe can be absorbed by the respective bellows. One should note in case of cryogenic application the pipe expansion joint will be stretched as the piping system will contract.

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Pressure Switch Bellows

What is a Pressure Switch?

This is a gadget intended to screen a procedure weight and give a yield when a set weight (set-point) is come to. A weight switch does this by applying the procedure weight to a stomach or cylinder to create a power which is contrasted with that of a per-packed reach spring.

A weight switch is utilized to recognize the nearness of liquid weight. Most weight switches utilize a stomach or howl as the detecting component. The development of this detecting component is utilized to incite one or more change contacts to show a caution or start a control activity.

Weight switches have diverse outlines with various detecting components. A standout among st the most well-known is the one with stomachs or roars as the detecting components. The one I will talk about here utilization a cylinder as the weight detecting component. Regardless, the working rule for this cylinder sort is the same with a stomach or cry sort weight switch.

PRESSURE SWITCH BELLOWS

Pressure switches are intended to reach when a set weight is come to. These switches can be intended to close or open on the weight rising or falling. Numerous businesses including car and diesel utilize these sorts of changes to keep up ideal framework operation. 

Diesel Generator Bellows: 

We have ability to make howls for different diesel motors utilized as a part of DG sets.

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Valve Bellows Manufacture In India | Pune

Valve Bellows Manufacture In India | Pune

Valve Bellows Manufacture in India | Pune, Valve Bellows  in India | Pune valve bellows  is a device, which arranges and controls the surge of fluid (slurries, fluidized solids, liquids, and gasses) by closing, opening or to some degree blocking various ways. Really, the Valves Bellows are known as a pipe fitting yet consistently discussed in discrete class.

The fundamental vision of Micro finish is to give wonderful administrations to the clients, give top quality valves, lastly meet the exceptional time point of confinement of the client.

VALVE BELLOWS :

How fixed valves are another sort of Industrial Process valves. These valves are famous because of the spillage free execution subsequently, called "Zero Leak Valves" or "Emanation Free Valves". 

With the use of Bellow seals the organ pressing is supplemented by a metallic Bellow cartridge. One end of the Bellow is associated with the valve cap and the flip side to the stem. The cry development is in one plane as the stroke in the valve happens. With no rotational developments included the liquid gets fixed to a high degree. 

The liquid moves through the base part of the valve according to the stem development happens. Because of the howl covering the stem the seal does not contact the stem by any means. As the stem is the moving part in the valve it is the wellspring of spillage because of the wear and tear of organ pressing. Because of this protecting of the stem by the howl the valve worked in a release free zone. 

The life cycle of the metal Bellow is to a great extent subject to the procedure of roar assembling. At Pliant Bellows we make them by hydro forming process. The properties accomplished by the hydro framing procedure are far better as analyzed than different procedure like, stomach welded howls or mechanically drawn roars. It is critical that the roars have the mechanical and metallurgical properties for long cycle life of a cry to maintain a strategic distance from

More Information About Coupling Products To Be Continue Next Blog......!!!!

BELLOWS COUPLINGS

Where The World Turns For Coupling Knowledge 

Bellows Coupling

SO IN SHORT ONE SHOULD USE THESE BELLOWS IN FOLLOWING CIRCUMSTANCES :

Excellent misalignment capability (compensation of shaft misalignment).

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 clasping association, which is transmitted by means of frictional locking, is reliant on the center bore (shaft measurement). For allowed values and point by point data on size determination, please see the Product Catalog. Metal cries couplings ensure a zero backfire torque transmission with to a great degree high torsional firmness and a low snippet of idleness. Distinctive sorts of roars, cone shaped bushings and bracing center points are accessible for various applications.

CHARACTERISTICS OF METAL BELLOWS COUPLINGS:

Torque range up to 700 Nm

high torsional stiffness

temperatures of up to 350°C

high speed

optional: stainless steel

The class of movement control covers an extensive variety of use sorts. Transports, machine devices, electronic checking gadgets, pick and place robots, and xyz gantry tables are only a couple of case of the assortment of these applications. Movement control couplings should be chosen by assessing which qualities are most critical to the correct capacity of the application. A few applications can call for vibration hosing qualities, misalignment pay, and more prominent torque limit or any mix of each of the three. In any case, in some cases the exactness or accuracy of an application is appraised the most essential trademark. A case of this would be a XYZ gantry table (i.e. CMM machine), which depends on exactness to check basic measurements of a specific item. For these sorts of uses, the Bellows style coupling gives a reduced coupling arrangement with a high measure of torsional firmness, which interprets into high precision for the application

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