Gate Valves
Gate Valves Manufacturer
S Nomi is a leading Stainless Gate Valves Manufacturer in Kolkata delivering high-quality gate valves designed for durability and performance across a wide range of applications. We serve clients in Kolkata, West Bengal, Odisha, Bihar, Jharkhand, Chhattisgarh, and Assam, providing premium-grade gate valves to meet industrial needs.
What are Gate Valves?
A Gate Valve is a type of valve used to control the flow of liquids or gases by raising or lowering a gate (or wedge) inside the valve body. It is primarily used in systems where a straight-line flow of fluid and minimum flow restriction are required. Stainless steel gate valves are widely known for their corrosion resistance and high durability, making them ideal for use in harsh and corrosive environments.
Technical Specifications of Stainless Gate Valves
- Material: Stainless Steel 304, 304L, 316, 316L, CF8, CF8M
- Size Range: 1/2″ to 48″ (custom sizes available)
- Pressure Rating: ANSI Class 150, 300, 600, 900, 1500, 2500
- Connection Type: Flanged, Threaded, Socket Weld, Butt Weld
- Operation: Manual (Handwheel or Gear Operated), Electric Actuator, Pneumatic Actuator
- Temperature Range: -29°C to 538°C (Depending on the material grade)
- End Connections:
- Flanged (ASME B16.5)
- Butt Welded (ASME B16.25)
- Socket Weld (ASME B16.11)
- Threaded (ASME B1.20.1)
- Body Type: Bolted Bonnet, Welded Bonnet, Pressure-Sealed Bonnet
- Standards: API 600, API 6D, ASME B16.34, BS 1414, DIN 3352
- Disc Type: Solid Wedge, Flexible Wedge, Parallel Slide
- Seat: Renewable Seat Rings, Hard-faced seats
- Testing: Hydrostatic Testing, Pneumatic Testing, Non-destructive Testing (NDT), Radiographic Testing
Manufacturing Process of Stainless Gate Valves
S Nomi follows a meticulous manufacturing process to ensure that our Stainless Gate Valves meet the highest quality standards:
- Material Selection: High-grade stainless steel is selected based on the application requirements. We use corrosion-resistant alloys such as 304, 316, and duplex stainless steel for high durability and extended service life in challenging environments.
- Forging and Casting:
- Forging: Involves shaping the stainless steel under high pressure and temperature to form the valve body, ensuring high strength and toughness.
- Casting: The casting process is used for complex valve body designs. It ensures precise dimensions and structural integrity, especially for larger valve sizes.
- Machining: After forging or casting, precision machining is done to achieve the required dimensions and smooth surfaces for proper valve functioning. CNC machines are employed to ensure high accuracy in the valve components.
- Heat Treatment: Heat treatment is carried out to relieve internal stresses and enhance the mechanical properties of the valve material. This process ensures that the valves can withstand high pressure and temperature variations.
- Assembly: The various components of the gate valve, such as the body, wedge, stem, bonnet, and seat rings, are carefully assembled. The valve is designed to ensure minimal friction during operation, improving longevity.
- Testing and Inspection:
- Pressure Testing: Each gate valve undergoes hydrostatic pressure testing to ensure leak-proof operation.
- Non-Destructive Testing (NDT): This ensures that there are no hidden defects in the valve body.
- Dimensional Inspection: Precision measuring tools are used to check the dimensions and tolerances of all parts.
- Surface Finishing: The stainless steel gate valve undergoes polishing to enhance corrosion resistance and appearance. We offer various surface finishes, such as satin or mirror polish, based on customer preferences.
- Packaging and Shipping: After final inspection, the valves are carefully packed to ensure safe transportation to the client.
Applications of Stainless Gate Valves
Stainless Steel Gate Valves are used in a wide range of industries due to their durability and corrosion resistance, especially in situations where the valve remains fully open or fully closed for extended periods.
- Oil & Gas Industry: Used in pipelines and refineries for controlling the flow of crude oil, natural gas, and petroleum products.
- Chemical Processing: Ideal for handling aggressive and corrosive chemicals in chemical plants.
- Water Treatment: Commonly used in municipal water supply systems and wastewater treatment plants.
- Marine Industry: Used in shipbuilding and offshore oil rigs due to their ability to withstand harsh marine environments.
- Power Generation: Deployed in high-pressure and high-temperature steam systems in power plants.
- Food & Beverage: Used in sanitary applications where stainless steel is required for hygiene and cleanliness.
Uses of Stainless Gate Valves
- Flow Control: Gate valves are designed to start or stop the flow of liquids or gases. The valve is either fully open or fully closed, making it perfect for applications where throttling is not necessary.
- Corrosion Resistance: Stainless steel offers excellent corrosion resistance, making these valves ideal for corrosive environments such as chemical plants, marine applications, and food processing.
- High-Pressure Applications: Stainless steel gate valves are suitable for handling high-pressure fluids in oil & gas, water treatment, and industrial applications.
- Longevity: Due to their robust design and corrosion-resistant material, stainless steel gate valves provide long service life with minimal maintenance.
Why Choose S Nomi for Stainless Gate Valves?
As a reputed Stainless Gate Valves Manufacturer, S Nomi offers superior products built for performance and durability. Our gate valves are engineered to meet international standards and are available in a wide range of sizes and pressure ratings. Whether for industrial, commercial, or municipal use, our gate valves provide reliable flow control and are designed for the most demanding environments.
For more information or to discuss your specific requirements, contact S Nomi—the trusted Stainless Gate Valves Manufacturer in Kolkata, West Bengal, Odisha, Bihar, Jharkhand, Chhattisgarh, and Assam.