Product Description:

The urea-grade three-way switching ball valve is specifically developed for high-pressure and highly corrosive environments in urea production systems. This valve is used to switch the flow direction between different process lines, such as between main and standby heat exchangers or reactors. Engineered from special urea-resistant materials like 316L Mod, 25-22-2, and duplex stainless steels, it provides excellent corrosion resistance and long-term durability. The valve features a full-bore, anti-blocking design with precision-machined sealing surfaces to ensure tight shutoff, minimal pressure drop, and reliable operation in carbamate-rich conditions. It is widely used in key sections of urea plants, including synthesis, decomposition, and recirculation loops.

Functional Parameters:

1. Size Range: DN25 to DN300 (1″ to 12″)

2. Pressure Rating: PN25 to PN400 / Class 150 to Class 2500

3. Temperature Range: -40°C to +200°C

4. Body Material: 316L Mod, 25-22-2, duplex stainless steel, titanium, or other urea-grade alloys

5. Ball & Seat Material: Hardened stainless steel or alloy overlay for corrosion and wear resistance

6. Seal Type: Metal-to-metal or PTFE-based soft seals

7. Connection Type: Flanged or butt-welded

8. Flow Configuration: L-type or T-type flow paths

9. Design Standard: ASME, API, GB/T, customized for urea industry use

Application Fields:

1. Urea synthesis systems

2. Carbamate decomposition loops

3. Heat exchanger switching in fertilizer plants

4. High-pressure urea reactors and process pipelines

5. Chemical processing units with corrosive media and demanding switching requirements

This valve is critical for ensuring flexible and safe switching operations in urea plants, enhancing both reliability and process efficiency.