Products
High Performance Butterfly Valve
✧ Description
A high-performance butterfly valve is a type of valve designed for demanding applications that require reliable sealing, high-pressure capability, and tight shut-off. These valves are commonly used in industries such as oil and gas, chemical processing, power generation, and water treatment, among others. They are characterized by their ability to provide efficient flow control and withstand challenging operating conditions.Some key features of high-performance butterfly valves include:Tight Shut-Off: These valves are designed to minimize leakage and provide a reliable seal even in high-pressure or high-temperature environments.Robust Construction: High-performance butterfly valves are often constructed with durable materials, such as stainless steel or exotic alloys, to withstand corrosive or abrasive media.Low Torque Operation: Many high-performance butterfly valves are designed for low torque operation, allowing for efficient actuation and reduced wear on valve components.Fire-Safe Design: Some high-performance butterfly valves are designed to meet fire-safe standards, providing an added layer of safety in case of fire incidents.High-Pressure Capability: These valves are suitable for applications requiring high-pressure handling capabilities.When selecting a high-performance butterfly valve, it's essential to consider factors such as the specific application, operating conditions, material compatibility, industry standards, and environmental considerations. Proper sizing and selection are critical to ensure the valve meets the performance requirements of the intended application.
✧ Features of High Performance Butterfly Valve
High Performance Butterfly Valves feature polymer compound seats with unlimited life expectancy and very high chemical resistance - few chemicals are known to affect fluorocarbon-based polymers, making these products attractive for industrial valve applications. Its quality surpasses that of rubber or other fluorocarbon polymers in terms of pressure, temperature and wear resistance.
Valve overall design
The stem of a High Performance Butterfly Valve is off-center on two planes. The first offset comes from the center line of the valve, and the second offset comes from the center line of the pipe. This causes the disc to detach completely from the disc at the very few operating degrees away from the seat. Look at the render below:
Seat design
With respect to the seat, as mentioned earlier, the rubber lined valve is closed by squeezing into the rubber sleeve. High Performance Butterfly Valve G seat design. The figure below describes how seating is affected in 3 scenarios:
After assembly: when assembled under no pressure
When assembled under no pressure, the seat is powered by the butterfly plate. This allows bubble sealing from the vacuum level through the valve's maximum pressure rating.
Axial pressure:
The G-seat profile creates a tighter seal as the plate moves. The insertion design reduces excessive seat movement.
Pressure on the insertion side:
The pressure turns the seat forward, amplifying the sealing force. Insertion into the bending area is designed to allow seat rotation. This is the preferred mounting direction.
The seat of a High Performance Butterfly Valve has a memory function. The seat returns to its original shape after loading. The ability of the seat to recover is defined by measurements of permanent deformation of the seat. Lower permanent deformation means that the material has better memory - it is less prone to permanent deformation when a load is applied. As a result, low permanent deformation measurements mean improved seat recovery and longer seal life expectancy. This means improved sealing under pressure and thermal cycling. Deformation is affected by temperature.
Stem packing and bearing design
The final point of comparison is the seal that prevents external leakage through the stem area.
As you can see below, rubber-lined valves have a very simple, non-adjustable stem seal. The design uses a stem bushing to center the shaft and 2 rubber U-cups to seal the medium to prevent leaks.
No adjustments are made to the sealed area, which means that if a leak occurs, the valve must be removed from the line and repaired or replaced. The lower shaft area has no stem support, so if the particles migrate to the upper or lower shaft area, the drive torque rises, resulting in difficult operation.
The High Performance Butterfly Valves shown below are designed with fully adjustable packing (shaft seal) to ensure long service life and no external leaks. If a leak occurs over time, the valve has a fully adjustable packing gland. Only turn the nut ring at a time until the leak stops.
✧ Advantages of High Performance Butterfly Valve
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 High Performance Butterfly Valve
| Product | High Performance Butterfly Valve |
| 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.
