Cast Steel Flanged Ball Valve

I. Flanged Ball Valve – Product Overview
　　 The Q41F/PPL/H manual flange ball valve not only boasts a simple structure and excellent sealing performance, but also features a compact design, lightweight construction, minimal material usage, and small installation dimensions—all within a certain nominal bore range. Additionally, it requires low actuation torque, making operation effortless and enabling quick on-off functionality. As one of the valve types that has seen rapid development over the past decade or so, the manual flange ball valve evolved from the plug valve. Its closing member takes the form of a spherical disc, which rotates 90° around the valve stem's axis to achieve full opening or closing. Floating ball valves are primarily used in pipelines for cutting off, distributing, and redirecting fluid flow. They find extensive applications across various industries, including chemical manufacturing, pharmaceuticals, and food processing; in power systems such as hydroelectric, thermal, and nuclear power plants; in municipal and industrial water supply, heating, and gas distribution networks; in agricultural irrigation and drainage systems; and even in metallurgical operations. In essence, manual flange ball valves play a crucial role as essential mechanical components deeply intertwined with infrastructure development, national defense initiatives, and everyday life. These valves ensure tight sealing in diverse piping systems, allowing precise control over media flow and enabling efficient delivery of fluids to specific destinations as per predetermined processes.
II. Flanged Ball Valve – Product Features
(1) The fluid resistance is low, with a drag coefficient equal to that of a pipe section of the same length.
(2) Simple structure, small size, and lightweight.
(3) Tight and reliable—currently, plastic is widely used as the sealing surface material for ball valves, offering excellent sealing performance and making them increasingly popular even in vacuum systems.
(4) Easy to operate and quick to open or close—simply rotate 90° from fully open to fully closed, making it convenient for remote control.
(5) Easy to maintain, ball valves have a simple structure, and their sealing rings are typically removable, making disassembly and replacement particularly convenient.
(6) When fully open or fully closed, the sealing surfaces of the sphere and valve seat are isolated from the medium, ensuring that media passage does not cause erosion of the valve's sealing surfaces.
(7) It has a wide range of applications, with nominal diameters ranging from just a few millimeters to several meters—and can be used across everything from high vacuum to extremely high pressure. When the ball rotates 90 degrees, it should fully expose its spherical surface at both the inlet and outlet, effectively cutting off the flow.
III. Flanged Ball Valve – Main Component Materials

IV. Flanged Ball Valve Technical Specifications

V. High-Platform Flanged Ball Valve Performance Specifications

VI. Ordering Information for Flanged Ball Valves
Please fill out the "Specification Sheet" or specify the following when placing your order:
1. If the model has not been selected before placing the order, please provide us with the following usage parameters: 1. Nominal diameter, 2. Fluid properties (including nominal pressure, temperature, viscosity, or acidity/alkalinity), and 3. Valve body and valve core materials.
2. If the design unit has already selected our company's product model, please place your order directly with our Sales Department according to the specified model.
3. When the application scenario is critical or the piping system is particularly complex, please provide design drawings and detailed specifications whenever possible, so our experts can review and ensure everything meets your requirements.