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Heat Exchanger

the leading manufacturers of heat exchangers

Stalwart International is one of the leading manufacturers, exporters and suppliers of heat exchangers in India.

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What is a Heat Exchanger?

A heat exchanger is an equipment that facilitates the transfer of heat from one fluid to another. They can exchange temperatures between two or more fluids, including liquids, vapors and gases.

Heat exchangers come in various functionalities, and depending on their type, the heat transfer process can occur in gas-to-gas, liquid-to-liquid, or liquid-to-gas. It can also happen through a separating solid, which prevents direct fluid contact.

A wide range of heat exchanger manufacturers design them for use in heating as well as cooling processes.

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Application of Heat Exchangers

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The application of heat exchangers ranges over varied industries such as power plants, chemical plants, pharmaceuticals, oil and gas industry and sewage treatment.

Stalwart International is an ASME (American Society of Mechanical Engineers) U, R and ISO IMS certified industrial heat exchanger manufacturer that designs, manufactures and looks after the maintenance of different types of heat exchangers.

If you are looking for heat exchangers, contact Stalwart International - India's best heat exchanger manufacturer.

Shell & Tube Heat Exchanger

A shell and tube heat exchanger is one of the most common heat transfer equipment used in various chemical industrial manufacturing processes. It consists of tubes inside a cylindrical shell where fluids undergo the heat exchange process.

Heat is transferred between the two fluids through the tube walls, resulting in either cooling or heating of the fluids, depending on the specific application.

Heat exchanger suppliers design them to have a large surface area, allowing efficient heat transfer.
It is widely used in various industries, including chemical processing, oil refining, power generation, HVAC systems, pharmaceuticals, etc. The versatility of this heat exchanger type allows it to handle a wide range of temperatures and pressures, making it suitable for diverse applications.

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In India, manufacturers and exporters make twin shaft dispersers that are commonly used in the mixing of thick pastes & high viscosity adhesives, homogenising rubber compounds, blending coatings and varnishes in the paint industry and processing high viscosity composites.


To conclude, a high speed disperser is used for its swift mixing ability and is well suited for applications that require quick dispersion while a twin shaft disperser is better for intensive mixing of high viscosity materials, which makes it ideal for demanding processes. Stalwart International is the best disperser manufacturer that designs, customises and provides maintenance services.

Corrugated Tube Heat Exchanger

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n corrugated tube heat exchangers, the efficiency and heat transfer coefficient are increased significantly compared to plain tube heat exchangers. Additionally, potential fouling is minimized, which makes supplying compact heat exchangers easier.

Stalwart International is one of the leading corrugated tube heat exchanger suppliers and exporters. We are a heat exchanger manufacturer who designs every piece of equipment precisely and customizes them depending on the requirement.

The main advantages of choosing a corrugated tube heat exchanger are increased heat transfer and a compact design, which reduces servicing costs.


Stalwart International is an ASME-certified industrial heat exchanger manufacturer that designs, exports and looks after the maintenance of corrugated tube heat exchangers in India. If you are looking for corrugated tube heat exchanger suppliers, contact Stalwart International - India's best heat exchanger manufacturer.

U Tube Bundle

A U bundle heat exchanger is a specialised heat transfer device which has a U shaped tube arrangement that enables effective heat transfer between two fluids.

It consists of a bunch of U shaped tubes held by tube sheets inside an outer casing. The tubes’ U shaped design facilitates thermal contraction and expansion without excessive stress on the tubes.

The U tubes in a U tube bundle heat exchanger enable it to take up less volume than a straight tube heat exchanger, facilitating low-pressure loss. It also has other advantages like a high thermal efficiency, flexibility for various temperature differentials, ease of maintenance and adaptability to different process requirements.

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They are widely employed in industries such as petrochemicals, chemicals and power generation. Stalwart International is an ASME-certified industrial heat exchanger manufacturer that designs, exports and looks after the maintenance of vertical shell and U bundle heat exchangers in India. If you are looking for a U bundle heat exchanger, contact Stalwart International - India's best heat exchanger manufacturer.

Double Pipe Heat Exchanger

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A double pipe heat exchanger efficiently exchanges heat between two fluids. It consists of two concentric pipes, with the two fluids flowing in opposite directions.

This design facilitates efficient heat transfer between the two fluids, making a counter flow pattern. This results in various suitable applications for temperature control, such as HVAC systems, refrigeration, and numerous heat recovery applications.

A double pipe condenser is also relatively simple in design and operation, making it easy to maintain and cost-effective. But it might prove inefficient in high-temperature or high-pressure applications, where a shell and tube heat exchanger would prove more efficient.


Stalwart International is an ASME-certified industrial heat exchanger manufacturer that designs, exports and offers installation & maintenance service of double pipe heat exchangers in India. If you are looking for heat exchangers, contact Stalwart International, India's best double pipe parallel flow heat exchanger manufacturer.

Floating Head Heat Exchanger

A floating head heat exchanger is a type of shell and tube heat exchanger which consists of a cylindrical shell containing a bundle of tubes, one end of which is connected to a floating head.

The floating head design allows the contraction of the tubes without being subjected to excessive stress. Heat is transferred through the tube walls, enabling efficient heat transfer.

The floating head heat exchanger is preferred in scenarios with a thermal stress risk because of differential expansion. This design simplifies maintenance and makes it suitable for multiple industrial applications like power plants, chemical processing, oil refineries, etc. There is also a variant called split ring floating head heat exchanger.

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Stalwart International is an ASME-certified industrial heat exchanger manufacturer that designs, exports and looks after the maintenance of floating head bundle heat exchangers in India. If you are looking for a floating tube heat exchanger, contact Stalwart International - India's best heat exchanger manufacturer.

Hair Pin Type

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A hairpin heat exchanger is a specific type of shell and tube heat exchanger that resembles the shape of a hairpin. It is very commonly used in various industrial applications.

This type of heat exchanger is ideal for applications that require specific temperature differences between the two fluids. The hairpin-shaped design allows thermal flexibility, reducing stress on the tubes.

The hairpin heat exchanger is widely used in chemical processing, petrochemical, oil refining and HVAC systems. The multitube hairpin makes the heat exchanger compact, making it suitable for applications with space constraints.

Stalwart International is an ASME-certified industrial heat exchanger manufacturer that designs, exports and looks after the maintenance of hairpin heat exchangers in India. If you are looking for heat exchangers, contact Stalwart International - one of India's best hairpin heat exchanger manufacturers.

WFI

WFI heat exchanger is used in pharmaceutical and biotechnology industries to produce and maintain Water for Injection (WFI). WFI is a high-purity water used as a critical component in various pharmaceutical processes, especially in injectable products.

The WFI heat exchanger plays a crucial role by destroying heat-sensitive microorganisms present in the water, removing impurities and ensuring that the WFI meets quality standards.

This type of heat exchanger’s design is carefully engineered to prevent cross-contamination and maintain necessary standards. It is typically built using high-quality stainless steel and has smooth surfaces, making cleaning and sterilization easy.

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Stalwart International is an ASME-certified industrial heat exchanger manufacturer that designs, exports and looks after the maintenance of CGMP WFI heat exchanger in India. To get yours customized, contact Stalwart International - one the best heat exchanger manufacturer in India.

Trusted by Industry Leaders

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Why choose Stalwart International

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500+ successful projects completed
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Employees strength of 200+
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43+ Years of experience
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ASME ‘U’ stamp, ‘R’ stamp, ‘CE’ & 'ISO Certified'.
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Worked in 14 countries across 4 continents
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Manufacturing Designing Commissioning
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We have purchased from Stalwart International more than 100 stainless steel equipment for our project at Ankleshwar. They are technically sound. Our deal with the vendor is quite smooth.

Raj Kumar

Manager, Alkem Ltd.

Stalwart International is our approved vendor for Chemical & Pharmaceutical Process Plant & Equipment. We have been procuring mainly Stainless Steel Process Equipment from them since long.

Satish Shah

G.M. - Projects, Calyx Chemicals & Pharmaceuticals Ltd.

We have been procuring Plant equipment from Stalwart International for last more than 10 years. They manufacture standard equipment having good workmanship and finishing.

Ulhas Dewal

Director, Ashu Organics (I) Pvt Ltd.

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FAQ & Updates

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Do you build custom design heat exchangers?
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Yes, as one of the best heat exchanger manufacturers in India, we also manufacture custom design heat exchangers for our customers based on their process requirements.
What guarantee does Stalwart International provide for its heat exchangers?
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We provide a 12 months warranty on our products for any manufacturing defects.
Do you build heat exchangers to meet specific application requirements?
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At Stalwart International, we manufacture heat exchangers that meet specific application requirements. We have manufactured heat exchangers used in high-pressure applications, greater than 30 bar and temperatures greater than 260 °C.
Do you do quality assurance testing on heat exchangers?
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We conduct stringent quality assurance testing on every corrugated, shell, and tube heat exchanger we have manufactured.
How do I know my heat exchanger is failing and might require replacement?
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Heat exchangers require replacement under conditions such as rising utility bills, increasing frequency of repair and maintenance, and poor heat transfer rates.

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Leaders of cutting-edge process equipment for diverse global sectors - manufactured and designed in India.

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