A concentric butterfly valve with a rubber-seated design is a type of industrial valve commonly used for regulating or isolating the flow of fluids in pipelines. Here's a brief overview of the key features and characteristics of this type of valve:Concentric Design: In a concentric butterfly valve, the center of the stem and the center of the disc are aligned, creating a circular concentric shape when the valve is closed. This design allows for a streamlined flow path and minimal pressure drop across the valve.Butterfly Valve: The valve uses a disc, or "butterfly," that is attached to a central stem. When the valve is fully open, the disc is positioned parallel to the direction of flow, allowing unobstructed flow. When the valve is closed, the disc is rotated perpendicular to the flow, effectively blocking the flow.Rubber-Seated: The valve features a rubber seat, which serves as the sealing element between the disc and the valve body. The rubber seat ensures a tight shut-off when the valve is closed, preventing leakage and providing a bubble-tight seal.Suitable Applications: This type of valve is often used in a wide range of industries, including water and wastewater treatment, HVAC systems, chemical processing, oil and gas, power generation, and general industrial applications.Actuation: Concentric butterfly valves can be operated manually using a hand lever or gear operator, or they can be automated with electric or pneumatic actuators for remote or automatic operation.When specifying a concentric butterfly valve with a rubber-seated design, factors such as valve size, pressure rating, temperature range, flow characteristics, and material compatibility with the media being handled should be carefully considered.1. small and light, easy to disassemble and repair, and can be installed in any position. 2. simple structure, compact, small operating torque, 90° rotation open quickly. 3. the flow characteristics tend to be straight, good adjustment performance. 4. the connection between the butterfly plate and the valve stem adopts a pin-free structure to overcome the possible internal leakage point. 5. the outer circle of the butterfly plate adopts spherical shape, which improves the sealing performance and extends the service life of the valve, and maintains zero leakage with pressure opening and closing more than 50,000 times. 6. the seal can be replaced, and the sealing is reliable to achieve two-way sealing. 7. the butterfly plate can be sprayed according to user requirements, such as nylon or polytetrafluoroides. 8. the valve can be designed to flange connection and clamp connection. 9. the driving mode can be selected manual, electric or pneumatic.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.

Product	Concentric Butterfly Valve Rubber Seated
Nominal diameter	NPS 2”, 3”, 4”, 6”, 8” , 10” , 12” , 14”, 16”, 18”, 20” 24”, 28”, 32”, 36”, 40”, 48”
Nominal diameter	Class 150, PN 10, PN 16, JIS 5K, JIS 10K, UNIVERSAL
End Connection	Wafer, Lug, Flanged
Operation	Handle Wheel, Pneumatic Actuator, Electric Actuator, Bare Stem
Materials	Cast Iron, Ductile Iron, A216 WCB, WC6, WC9, A352 LCB, A351 CF8, CF8M, CF3, CF3M, A995 4A, A995 5A, A995 6A, Alloy 20, Monel, Aluminum Bronze and other special alloy.
Seat	EPDM, NBR, PTFE, VITON, HYPALON
Structure	Concentric, Rubber Seat
Design and Manufacturer	API609, ANSI16.34, JISB2064, DIN 3354，EN 593, AS2129
Face to Face	ASME B16.10
Test and Inspection	API 598
Other	NACE MR-0175, NACE MR-0103, ISO 15848, API624
Also available per	PT, UT, RT,MT.

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.