Speciality Valve is a leading Swing Check valve manufacturers in India. A swing check valve is a type of check valve used in piping systems to allow flow in one direction while preventing backflow in the opposite direction. It typically consists of a hinged disc, known as the swing disc or flap, inside the valve body.
How it works?
The main structure of the valve, usually made of metal or plastic, which contains the internal components. The swing check valve's distinguishing feature is the swinging disc or flap, which is hinged at the top of the valve body. When there is forward flow (flow in the desired direction), the pressure of the fluid pushes the disc open, allowing the fluid to pass through the valve. In some designs, a return spring is used to help close the disc when flow stops. This ensures that the disc closes promptly, minimizing the risk of water hammer or reverse flow. The seat is the sealing surface against which the swing disc closes to prevent backflow. It ensures a tight seal when the valve is closed, preventing any fluid from flowing backward through the system. The hinge pin is the pivot point for the swing disc. It allows the disc to swing freely open and closed as fluid flows through the valve. When flow stops or reverses, the swing disc swings back to its closed position under the influence of gravity or a return spring. This effectively seals off the valve, preventing any backflow.
Swing check valves offer several features that make them suitable for various applications. Here are some key features:
Unidirectional Flow: Swing check valves allow flow in one direction only. They are designed to automatically close when flow reverses, preventing backflow and protecting downstream equipment.
Low Pressure Drop: These valves typically have minimal obstruction to flow when fully open, resulting in low pressure drop across the valve. This feature helps maintain efficient flow rates within the piping system.
Simple Design: Swing check valves have a relatively simple design, consisting of a swing disc, hinge pin, and valve body. This simplicity contributes to their reliability and ease of maintenance.
Wide Range of Sizes and Materials: Swing check valves are available in a wide range of sizes to accommodate various pipe diameters and flow rates. They are also manufactured from different materials, including cast iron, bronze, stainless steel, and PVC, to suit different applications and fluid types.
Versatility: These valves can be installed in horizontal or vertical piping systems, making them versatile for use in different orientations and configurations.
Reduced Water Hammer: The swinging motion of the disc helps reduce the risk of water hammer, which occurs when the flow of fluid is suddenly halted or reversed, potentially causing pressure surges and damage to the piping system.
Some swing check valves may include additional features such as external lever and weight for adjustable closing speed, bolted bonnet for easy maintenance, or rubber-coated disc for improved sealing.
Compliance with Standards: Swing check valves are often designed and manufactured to meet industry standards and specifications, ensuring performance and reliability in various applications.
Installation:
When installing swing check valves, prioritize horizontal orientation to prevent water hammer and ensure effective operation. Vertical installations, particularly with upward flow, risk the disc slamming against the seat when flow stops. Confirm flow direction matches valve indications. Mount securely with ample clearance for maintenance. Use appropriate methods for threaded, flanged, or welded connections. Conduct pressure tests post-installation and clearly label for easy identification during maintenance.
As Swing Check valve manufacturers in India , we manufacture valves in following description:
Body Material: A182 F316L, A351 CF3M, Cast iron, Cast Steel, Ductile Iron, SS304, SS316, SS316L
Class: 150, 150/PN16, 300, 600, PN10/16, PN64
Size: 1 1/2" to 8"
Class-150 – 2500; PN10 – PN-450
Ends-threaded, socket weld, butt weld, flanged, lug, wafer
Visit us: https://www.specialityvalve.com/product-category/swing-check-valve/