In modern industrial piping systems, large-diameter ball valves not only perform on-off functions but also are directly related to the operational safety, sealing reliability and long-term stability of the system. Especially in occasions involving high temperature, fire hazards or complex working conditions, the safety design of valves is particularly critical.
The DN350 PN16 CF8 2PC cast floating ball valve (Fire-Safe design) shown in the figure is specially engineered for such high-demand working conditions. It balances structural strength, sealing performance and safety compliance, and is widely used in various industrial fields.
Core Structural Advantages
1. DN350 Large Diameter · PN16 Pressure Class
Adopting a full-bore DN350 design, it features low flow resistance and large flow capacity, suitable for medium and low pressure industrial pipe networks. The PN16 pressure class can meet the operational requirements of most water treatment, chemical and utility engineering systems.
2. CF8 Stainless Steel Cast Valve Body
The valve body is made of CF8 (ASTM A351) stainless steel castings, equivalent to 304 stainless steel, with the following properties:
Excellent corrosion resistance
Stable mechanical strength
Suitable for water, steam and weakly corrosive media
The casting process ensures the overall strength and uniform wall thickness of the large-diameter valve body.
3. 2PC Structural Design
The 2PC valve body is connected by bolts, featuring:
Compact structure and high strength
Relatively convenient installation and maintenance
Reliable valve body sealing
For the DN350 specification, the 2PC structure achieves an excellent balance between strength and maintenance convenience.
Working Principle of Floating Ball Structure
This ball valve adopts a classic floating ball design. The ball moves to the downstream valve seat under the action of medium pressure, thus forming a reliable seal.
Its advantages include:
Realizing automatic compensation sealing by utilizing medium pressure
Reducing the risk of leakage
Maintaining stable performance under different pressure conditions
It is ideally suited for use as an isolation valve in piping systems.
Fire-Safe Design
Fire resistance is a prominent feature of this valve.
Under extreme working conditions such as fire:
Even if the soft sealing material fails
The metal secondary sealing structure inside the valve can still maintain basic sealing performance
Effectively reducing medium leakage and the risk of secondary accidents
This design concept complies with the API 607 / ISO 10497 fire safety standards, making it suitable for industrial projects with high safety requirements.
Flange Connection and Actuator Compatibility
Flange connection mode, suitable for large-diameter pipeline installation, with uniform force bearing and high reliability
An actuator interface is reserved on the top of the valve, which can be flexibly configured with:
Worm gear box
Electric actuator
Pneumatic actuator
It meets the requirements of automated and remote control systems.
Manufacturer and supplier of industrial valves, including Floating Ball Valves, Trunnion Ball Valves, Flanged Gate Valves, Welded Gate Valves, High Pressure Gate Valves, Globe Valves, Swing Check Valves, Double Disc Wafer Check Valves, Y Strainers , etc. For more information, please send us your email .
