In modern industrial pipeline systems, ball valves are widely used due to their rapid opening and closing and good sealing performance. Especially in situations that require frequent maintenance or quick replacement of seals, the three piece ball valve body, as a structurally optimized product, is gradually becoming the preferred component in various efficient fluid control scenarios.

Structural advantage: Modular design optimizes maintenance experience

The three piece ball valve body consists of three parts: the left valve body, the right valve body, and the middle main valve body. The bolt assembly structure is designed for easy disassembly and assembly, and core components such as the ball core and valve seat can be replaced without moving the overall pipeline. This modular construction helps to reduce system maintenance costs and improve equipment availability.

In addition, compared to the integral ball valve structure, the three piece design has higher requirements for assembly accuracy and sealing pair fit, and puts forward strict standards for the precision, structural stability, and interface flatness of valve body castings.

Technical difficulty: High synergy between material adaptation and precision casting

As a key pressure bearing component, the three piece ball valve body not only needs to meet the requirements of compressive strength and corrosion resistance, but also needs to cope with the effects of thermal expansion and contraction in variable fluid environments. In practical applications, manufacturers usually choose different metal materials such as carbon steel, 304/316 stainless steel, Hastelloy, Monel alloy, etc. based on the operating conditions to achieve characteristic matching such as chemical corrosion resistance, high temperature adaptability, or erosion resistance.

The precision of valve body casting determines the overall sealing performance and smooth opening and closing of the ball valve. At present, the silica sol precision casting process is widely used in the industry to achieve high surface quality and dimensional control capabilities. Under this process system, the quality of the shell, control of the roasting temperature, and cooling rate of the castings all have significant impacts on the performance of the final product.

Manufacturing support: relying on the molding and testing capabilities of Jingong

To achieve high-quality delivery of this type of valve body, Jingong Precision Casting (Fujian) Co., Ltd. relies on the medium and low temperature wax silica sol casting technology platform, equipped with intelligent digital shell making flow lines, regenerative sintering furnaces, heat treatment furnaces, CNC machining centers, spectrometers, and ultrasonic cleaning equipment, forming a complete manufacturing loop covering design, casting, processing, and testing.

At present, Jingong can produce various ball valve bodies with diameters of DN20-DN1250 and pressure ratings of 150-4500LB according to GB, ANSI, API, DIN, BS and other standards, and provide personalized material adaptation and processing solutions based on customer drawings and specific working conditions.

Application adaptation: High reliability components for multi industry needs

In fluid systems that require flexible disassembly, frequent maintenance, or prioritize sealing performance, the three piece ball valve body has good adaptability. Its structure is given priority consideration in petrochemical, energy, water treatment, shipbuilding, and some automation control systems. With the increasing emphasis on equipment maintainability and lifecycle cost control in industrial systems, the demand for such products is showing a steady growth trend.

Jingong will continue to focus on deepening the process and quality control of such products, helping customers achieve more stable and reliable fluid control in complex environments.