Check Valve Dealer & Supplier
Best Butt Weld Fittings Manufacturer in India since 1971.
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Teshi Group : Leading Manufacturer, Stockist, Supplier, and Exporter of Check Valve in India.
Teshi Group is a leading manufacturer, stockist, supplier, and exporter of high-quality Check Valves in India, offering reliable and efficient solutions to prevent backflow in critical fluid and gas systems. These valves are designed to allow fluid to flow in only one direction, automatically closing to prevent reverse flow, which is essential for protecting pumps, compressors, and other sensitive equipment. Ideal for industries such as oil & gas, chemical processing, water treatment, and power generation, Teshi Group’s Check Valves ensure safe, uninterrupted operation by providing exceptional sealing performance and durability. Manufactured using advanced technology and high-grade materials, Teshi Group’s Check Valves are engineered to withstand high pressures, extreme temperatures, and harsh environments, offering long-lasting service life with minimal maintenance. With a strong focus on innovation and quality, Teshi Group offers both standard and customized Check Valves to meet specific operational needs. Their dedication to precision and reliability has earned Teshi Group a solid reputation as a trusted supplier, providing top-tier Check Valves that ensure system integrity and efficient performance across diverse industries.
About Check Valve :-
A Check Valve is a type of valve designed to allow the flow of fluids or gases in one direction only, preventing backflow and ensuring that the flow moves in the intended direction. It operates automatically without the need for manual operation, using a hinged or spring-loaded disc, ball, or other mechanism that opens when the fluid pressure is higher than the surrounding pressure, allowing flow through the valve. When the flow direction reverses, the valve closes, blocking the backflow and protecting the system from damage, contamination, or pressure surges.
Check valves are commonly used in various industries such as water treatment, oil and gas, chemical processing, power generation, and HVAC systems. They are critical in preventing the reversal of fluid flow, which could lead to system damage, equipment failure, or contamination. These valves are often installed in pipelines, pumps, and systems where unidirectional flow is crucial to maintain the integrity and safety of the process.
Check valves come in a variety of designs, including swing check, spring-loaded check, ball check, and lift check, each suited to specific applications depending on the pressure, flow rate, and medium being transported. The materials used for check valves can range from stainless steel and cast iron to plastics and alloys, selected based on factors such as corrosion resistance, temperature, and pressure ratings.
The main advantages of check valves are their reliability, simplicity, and low maintenance. Their automatic operation ensures that backflow is prevented without the need for manual intervention. Furthermore, check valves help maintain system efficiency by protecting pumps, compressors, and other equipment from the damaging effects of reverse flow. Overall, check valves are an essential component in many industrial and residential systems where the prevention of backflow is a priority.
Teshi Group is an ISO certified Check Valve manufacturer & distributor in India.
Check Valve Specification, Grades & Material
Fittings |
Specification |
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Valve Types
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The Pinch Valve, Pressure Relief Valve, Plug Valve, Needle Valve, Gate Valve, Butterfly Valve, Check Valve, Ball Valve, Globe valve
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Schedule
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SCH5, SCH10, SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120,SCH140, SCH160, XXS
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Standard
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ASME/ANSI B16.11, MSS-SP-97, MSS-SP-79, JIS B2316, BS 3799
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Size
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1/8″NB to 24″NB & 1/4″OD TO 24″OD AND 6.35mm to 254mm OD Thickness: 0.6mm to 20mm
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Type
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Welded, threaded, BW, SW.
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Fittings |
Grade |
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Stainless Steel
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ASTM /ASME A/SA 213 / 249 / 269 / 312 / 358 CL. I to V – 304 , 304L , 304H, 309S ,309H , 310S, 310H , 316 , 316TI , 316H , 316 LN , 317 , 317L , 321 , 321H , 347 , 347 H , 904L .
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Duplex Steel
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ASTM/ASME A/SA 789, 790 – UNS NO S 31803, S 32205, S 32550, S 32750, S 32760.
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Carbon Steel
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ASTM A106 Gr. A, B & C API 5L Gr. A / B, X42 ,X52 ,X60 ASTM A 53 Gr. A/B
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Alloys Steel
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ASTM /ASME A/SA 213 / 335 / 691 – P5,P9,P11,P12,P22,P91
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Nickel Alloys
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Nickel Alloys 200, Nickel Alloys 201
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Hastelloy
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Hastelloy C-22, Hastelloy C-276, Hastelloy C-2000, Hastelloy C-4, Hastelloy X, Hastelloy B, Hastelloy N, Hastelloy G
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Inconel
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Inconel 600, Inconel 601, Inconel 625, Inconel 625LCF, Inconel 686, Inconel 718, Inconel 800, Inconel 825, Inconel X-750 , Inconel 690, Inconel 602, Inconel 617, Inconel 925, Inconel A-289, Inconel AL-6XN, AL-904L
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Teshi Group Is A Leading Suppliers of Check Valve
We supply Check Valve to Agra, Ahmedabad, Ajmer, Aligarh, Allahabad, Ambattur, Amravati, Amritsar, Asansol, Aurangabad, Bangalore, Bareilly, Belgaum, Bhavnagar, Bhilai Nagar, Bhiwandi, Bhopal, Bhubaneswar, Bikaner, Chandigarh, Chennai, Coimbatore, Cuttack, Dehradun, Delhi, Dhanbad, Durgapur, Faridabad, Firozabad, Gaya, Ghaziabad, Gorakhpur, Gulbarga, Guntur, Gurgaon, Guwahati, Gwalior, Haora, Hubli and Dharwad, Hyderabad, Indore, Jabalpur, Jaipur, Jalandhar, Jalgaon, Jammu, Jamnagar, Jamshedpur, Jhansi, Jodhpur, Kalyan & Dombivali, Kanpur, Karnataka, Kochi, Kolapur, Kolkata, Kota, Loni, Lucknow, Ludhiana, Madurai, Maheshtala, Malegoan, Mangalore, Meerut, Mira, Bhayander, Moradabad, Mumbai, Nagpur,Nanded Waghala, Nashik, Navi Mumbai, Nellore, Noida, Patna, Pimpri & Chinchwad, Pune, Raipur, Rajkot, Ranchi, Saharanpur, Salem, Sangli Miraj Kupwad, Siliguri, Solapur, Srinagar, Surat, Thane, Thiruvananthapuram, Tiruchirappalli, Tirunelveli, Udaipur, Ujjain, Ulhasnagar, Vadodara, Varanasi, Vasai Virar, Vijayawada, Visakhapatnam, Warangal.
Check Valve Exporter To All Major Cities In The World
We export Check Valve to Seoul, Hanoi, Los Angeles, Rio de, Houston, York, Dammam, Al-Khobar, Bogota, Al-Jubail, Chiyoda, Abu Dhabi, Kuwait Santiago, Perth, Busan, London, Jakarta, Surat, Courbevoie, Dallas, Calgary, Mexico Muscat, Aberdeen, City, Edmonton, Riyadh, Caracas, Ahvaz, Brisbane, Moscow, Milan, Manama, Ulsan, Jaya, Granada, Vung Petaling, Melbourne, Montreal, Port-of-Spain, La Victoria, Istanbul, Janeiro, Karachi, New Singapore, Madrid, Lagos, Atyrau, Sydney, Kuala Dubai, City, Bangkok, Toronto, Gimhae-si, Lumpur, Jeddah, Pimpri-Chinchwad, Tehran, Doha, Ho-Chi-Minh-City, Algiers, Tau, Colombo, Ernakulam, Geoje-si, Cairo, Sharjah, Lahore.
Teshi exports Check Valve in more than 50 countries. We have shipments going out monthly to different countries for our newly acquired customers. Our ready stock of Flanges helps us ship the Flange and meet the requirement and demands of our customers as fast as possible.
We Export Check Valve to United States (USA), Canada, Germany, Japan, France, Middle-East, Bangladesh, Nepal etc.
Product
Export
Frequently Asked Questions
Most frequent questions and answers
What is a check valve?
A check valve, also known as a non-return valve, is a device that allows fluid to flow in one direction only. It prevents backflow, ensuring the proper direction of flow within a pipeline and protecting equipment from damage caused by reverse flow.
How does a check valve work?
A check valve operates automatically without the need for external control. It has a disc or ball inside that is pushed open when the fluid flows in the correct direction. If the flow reverses, the disc or ball closes, preventing backflow and protecting the system.
What are the different types of check valves?
There are several types of check valves, including:
- Swing check valve: Features a hinged disc that swings open and closed.
- Ball check valve: Uses a ball that moves to seal or open the flow path.
- Lift check valve: A valve with a disc that lifts from the seat to allow flow.
- Tilting disc check valve: Has a disc that tilts to open or close the flow path.
Where are check valves used?
Check valves are used in various applications to prevent backflow, including:
- Water and wastewater systems.
- Oil and gas pipelines.
- HVAC systems.
- Industrial process systems.
- Pumps and compressors.
- Marine and power generation systems
Why is a check valve important?
Check valves are crucial for protecting equipment from reverse flow, which can cause damage to pumps, compressors, and other components. They help maintain system efficiency, prevent contamination, and ensure the safety of operations.
What is the difference between a check valve and a shut-off valve?
A check valve allows fluid to flow in one direction only and prevents backflow automatically, while a shut-off valve is manually operated to stop or regulate the flow of fluid in a pipeline. Check valves are passive devices, while shut-off valves require external intervention.
Can check valves be used in high-pressure systems?
Yes, check valves are available in high-pressure designs and materials such as stainless steel and alloy steels to handle demanding environments, such as in oil & gas and power generation applications.
What is the purpose of a swing check valve?
A swing check valve is designed to allow fluid to flow in one direction and uses a hinged disc that swings open to allow flow. When the flow reverses, the disc swings back, closing off the valve to prevent backflow.
Can check valves be used in both liquid and gas applications?
Yes, check valves can be used for both liquid and gas applications. However, the design and materials may differ depending on whether the system is handling liquids or gases, and the specific requirements of the system.
What is a ball check valve, and where is it used?
A ball check valve uses a ball that moves within the valve body to block reverse flow. These valves are commonly used in pumps, compressors, and fluid transfer systems where backflow prevention is critical.
How does a lift check valve differ from other check valves?
A lift check valve features a disc that lifts off its seat to allow flow and closes when the flow reverses. This design is typically used in vertical or horizontal piping systems where the flow velocity is relatively low, and the valve can easily open and close.
Are there check valves that can handle high temperatures?
Yes, high-temperature check valves are available for applications requiring resistance to extreme temperatures. These valves are typically made from metal materials such as stainless steel and are designed to operate in industries such as oil and gas, power generation, and chemical processing.
Can a check valve be installed in any orientation?
Most check valves can be installed in any orientation, but swing check valves typically require vertical installation with the flow moving upward. Always follow the manufacturer’s guidelines to ensure optimal performance.
How does a tilting disc check valve work?
A tilting disc check valve features a disc that tilts to open or close based on the flow direction. This design reduces pressure loss and is ideal for high-flow applications where smooth operation and efficient backflow prevention are needed.
Can check valves be used in sanitary applications?
Yes, sanitary check valves are available, especially for industries like food & beverage, pharmaceuticals, and biotechnology. These valves are designed with smooth surfaces, hygienic materials (such as 316L stainless steel), and easy-to-clean designs to prevent contamination.
What are the benefits of using a non-return valve (check valve)?
A non-return valve (or check valve) provides the key benefit of preventing backflow, which could otherwise cause damage to equipment, reduce system efficiency, and lead to contamination. This valve improves system reliability, maintains pressure, and protects pumps and other machinery from reverse flow and potential failures.
Are check valves suitable for all types of fluids?
Check valves are available in a variety of materials and designs to handle different types of fluids. While most check valves are suitable for water, oil, and gas, some are specifically designed for corrosive fluids, slurries, or viscous liquids. It is important to select the right valve material and design for the specific fluid being transported to ensure durability and performance.
What is the main difference between a check valve and a pressure relief valve?
A check valve prevents reverse flow in a system, ensuring fluid only moves in one direction. In contrast, a pressure relief valve is designed to release pressure when it exceeds a certain threshold, protecting the system from overpressure. While both are safety devices, their functions are distinct and complementary in fluid systems.
Can check valves be used in high-flow applications?
Yes, check valves are available for high-flow applications, but it is essential to choose the right type of check valve. Tilting disc check valves and ball check valves are often preferred in high-flow systems because of their ability to minimize pressure drop and ensure smooth, unrestricted flow. Selecting the proper valve size and material will also help ensure performance in high-flow conditions.
How does a double check valve work?
A double check valve consists of two check valves installed in series to provide extra protection against backflow. This configuration ensures that if one valve fails, the second valve can still prevent reverse flow, offering an added layer of safety and reliability, especially in critical applications like potable water systems.
Can check valves be used in reverse flow applications?
No, check valves are specifically designed to prevent reverse flow. If reverse flow is required for a system, a different type of valve, such as a shut-off valve or bypass valve, should be used. Installing a check valve in an application that requires reverse flow would compromise the system’s safety and functionality.
What is the role of a check valve in a pump system?
In a pump system, a check valve is typically installed downstream of the pump to prevent backflow when the pump is turned off. This helps to maintain pressure in the system, protect the pump from damage, and ensure that the fluid doesn’t flow back into the pump, which could cause operational issues.
What is the lifespan of a check valve?
The lifespan of a check valve depends on factors such as the material of construction, the type of fluid being transported, operating conditions (e.g., temperature, pressure, and flow rate), and the frequency of maintenance. Typically, a well-maintained check valve can last between 5 to 15 years before requiring replacement.
Can a check valve be repaired if it fails?
In many cases, check valves can be repaired if they fail. Depending on the type of valve and the failure cause, repairs may involve replacing components like the disc, ball, or seals. However, some severe failures (e.g., significant wear, corrosion, or damage) may require valve replacement. Regular inspection and maintenance can help identify issues early and prolong the lifespan of the valve.
What is the pressure rating of a typical check valve?
The pressure rating of a check valve depends on its design, materials, and the manufacturer’s specifications. Check valves can range from low-pressure designs suitable for household plumbing (up to 150 PSI) to high-pressure versions used in industrial applications, capable of withstanding pressures of several thousand PSI. Always select a valve with a pressure rating appropriate for your system.
What is a wafer-style check valve?
A wafer-style check valve is a compact, lightweight check valve typically installed between flanged pipe connections. It uses a disc that tilts to allow flow and closes when backflow occurs. Wafer check valves are used in systems with limited space and are ideal for applications where weight and size are important considerations.
