Products
Triple Offset Butterfly Valve
✧ Description
A triple offset butterfly valve is a type of quarter-turn valve that is designed to provide efficient and reliable flow control in various industrial applications. Unlike conventional butterfly valves, which have a concentric or eccentric design, a triple offset butterfly valve features a unique design with three offsets:Shaft Offset: The centerline of the shaft is positioned behind the centerline of the sealing surface, which helps minimize wear and friction during operation, resulting in improved performance and extended service life.Disc Offset: The disc is positioned off-center from the pipe's centerline, which enables a bubble-tight seal with a tighter shut-off, reducing the potential for leakage and improving valve performance.Conical Seat Geometry: The sealing surface of the valve seat is designed in a conical shape, which allows for a smooth and frictionless operation during opening and closing, while maintaining a tight seal across the entire range of operation.These offsets contribute to the valve's capability to provide tight shut-off, high-performance throttling, and resistance to wear and abrasion, making it suitable for demanding applications in industries such as oil and gas, petrochemical, chemical processing, power generation, and more.Triple offset butterfly valves are known for their ability to handle high temperatures, high pressures, and corrosive or abrasive media, making them a popular choice for critical process applications where reliability and performance are essential.When selecting a triple offset butterfly valve, factors such as material compatibility, pressure and temperature ratings, end connections, and industry standards should be carefully considered to ensure proper function and optimal performance for the specific application.
✧ Features of Triple Offset Butterfly Valve Wafer Connection
The three-eccentric butterfly valve is made of a three-eccentric structure of the butterfly valve, that is, an angular eccentricity is added on the basis of the ordinary metal hard sealed double-eccentric butterfly valve. The main function of this Angle eccentricity is to make the valve in the process of opening or closing action, any point between the sealing ring and the seat will be quickly detached or contact, so that the real "frictionless" between the sealing pair, extending the service life of the valve.
Three eccentric structure diagram description
Eccentric 1: The valve shaft is located behind the seat shaft so that the seal can be completely tight around the entire seat.
Eccentric 2: The center line of the valve shaft deviates from the pipe and valve center line, which is protected from the interference of the valve opening and closing.
Eccentric 3: The seat cone shaft deviates from the center line of the valve shaft, which eliminates friction during closing and opening and provides a uniform compression seal around the entire seat.
✧ Three eccentric butterfly valve advantages
1. The valve shaft is located behind the valve plate shaft, allowing the seal to wrap around and touch the entire seat
2. the valve shaft line deviates from the pipe and valve line, which is protected from the interference of the valve opening and closing
3. The seat cone axis deviates from the valve line to eliminate friction during closing and opening and to achieve a uniform compression seal around the entire seat.
✧ Advantages of Triple Offset Butterfly Valve Wafer Connection
During the opening and closing process of the forged steel globe valve, because the friction between the disc and the sealing surface of the valve body is smaller than that of the gate valve, it is wear-resistant.
The opening or closing stroke of the valve stem is relatively short, and it has a very reliable cut-off function, and because the change of the valve seat port is proportional to the stroke of the valve disc, it is very suitable for the adjustment of the flow rate. Therefore, this type of valve is very suitable for cut-off or regulation and throttling.
✧ Parameters of Triple Offset Butterfly Valve Wafer Connection
| Product | Triple Offset Butterfly Valve Wafer Connection |
| Nominal diameter | NPS 2”, 3”, 4”, 6”, 8” , 10” , 12” , 14”, 16”, 18”, 20” 24”, 28”, 32”, 36”, 40”, 48” |
| Nominal diameter | Class 150, 300, 600, 900 |
| End Connection | Wafer, Lug, Flanged (RF, RTJ, FF), Welded |
| Operation | Handle Wheel, Pneumatic Actuator, Electric Actuator, Bare Stem |
| Materials | A216 WCB, WC6, WC9, A352 LCB, A351 CF8, CF8M, CF3, CF3M, A995 4A, A995 5A, A995 6A, Alloy 20, Monel, Inconel, Hastelloy, Aluminum Bronze and other special alloy. |
| A105, LF2, F5, F11, F22, A182 F304 (L), F316 (L), F347, F321, F51, Alloy 20, Monel, Inconel, Hastelloy | |
| Structure | Outside Screw & Yoke (OS&Y)，Pressure Seal Bonnet |
| Design and Manufacturer | API 600, API 603, ASME B16.34 |
| Face to Face | ASME B16.10 |
| End Connection | Wafer |
| Test and Inspection | API 598 |
| Other | NACE MR-0175, NACE MR-0103, ISO 15848, API624 |
| Also available per | PT, UT, RT,MT. |
✧ After Sale Service
As a professional forged steel valve manufacturer and exporter, we promise to provide customers with high-quality after-sales service, including the following:
1.Provide product usage guidance and maintenance suggestions.
2.For failures caused by product quality problems, we promise to provide technical support and troubleshooting within the shortest possible time.
3.Except for damage caused by normal use, we provide free repair and replacement services.
4.We promise to respond quickly to customer service needs during the product warranty period.
5. We provide long-term technical support, online consulting and training services. Our goal is to provide customers with the best service experience and make customers' experience more pleasant and easy.
