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Product Specifications
Applicable Standards:
Ball Valve design according to API6D,BS5351,ASME B16.34
Face to face ASME B16.10,AP6D
End Flanges ASME B16.5/ASME B16.47
Butt welded ends ASME B16.25
Fire Safety API607,API6A
Inspection and test API 598,API6D
Material: CF8M
Size Range: 2"~48"
Pressure Rating: ASME CL, 150, 300, 600
Design Description:
- Structure : 2 pieces or 3 pieces body
- High shut-off sealing mechanism and low torque operation
- Block and bleed function
- Self-cavity pressure relief
- Fire safe design
- Blow out proof stem construction
- Anti-static design
- Locking device (for lever handle operation)
- ISO 5211 actuator mounting
- Emergency grease injection (option)
- PN design can be available
| Brand | DIDTEK |
| Structure | Ball |
| Valve Material | Didtek provide cast steel, stainless steel, special alloy, CI, DI etc |
| Valve Type | Didtek Produce Ball Valve |
| Valve Test | 100% quantity tested before delivery |
| Valve Guarantee | 18 months after shipments and 12 months after installed |
| Valve Structure | Tunnion Mounted Ball Valve |
| Valve Delivery | 15 - 30 days |
| Valve Sample | Sample Available by Didtek Valve |
| Valve Color | Customer request |
| Valve Packing | Plywood Case for Ball Valve |
| MOQ | 1 Set |
| Valve Certificate | API6D/CE/ISO9001/ISO14001 |
| Place of Origin | Zhejiang, China (Mainland) |
| Delivery Detail: | Shipped in 15-30 days after payment |
| Port | Shanghai Or Ningbo |
| Payment Terms | L/C,D/A,D/P,T/T, Western Union |
Key Features
2-Piece Forged Body
The two-piece bolted body provides ease of disassembly and maintenance while maintaining structural integrity under pressure.
Trunnion-Mounted Ball Design
The ball is anchored by trunnions, reducing seat wear and operational torque. This design ensures reliable sealing in large-diameter and high-pressure applications.Metal-to-Metal Seat
Hardened metal seats (Stellite, Tungsten Carbide, or Chrome coating options) provide superior resistance to abrasion, erosion, and high-temperature service.Fire-Safe & Anti-Static Design
Complies with API 607 / ISO 10497 fire-safe standards and includes anti-static grounding for enhanced operational safety.Double Block and Bleed (DBB) Function
Optional DBB configuration allows isolation and venting between upstream and downstream sides for improved safety and testing convenience.
Why Choose Our Valve
Precision-engineered forged stainless steel body
Superior sealing under high pressure and high temperature
Fire-safe, anti-static, and double block-and-bleed options
Long service life and minimal maintenance
Competitive pricing and full customization support
FAQ
Q1: What is the difference between a trunnion-mounted ball valve and a floating ball valve?
A1: A trunnion-mounted ball valve has the ball fixed by trunnions, reducing load on seats and operational torque. It’s ideal for larger sizes and higher pressures, while floating ball valves suit small-size, low-pressure systems.
Q2: Why choose metal seats over soft seats?
A2: Metal seats provide excellent wear, temperature, and corrosion resistance in severe services such as steam, slurry, and abrasive media. Soft seats (PTFE, RPTFE) are better for clean, low-pressure, or low-temperature fluids.
Q3: Can this valve handle bidirectional flow?
A3: Yes. The trunnion design ensures true bi-directional sealing, making it suitable for pipelines with possible reverse flow.
Q4: What industries commonly use metal-seated trunnion valves?
A4: They are widely used in oil & gas, refining, power, chemical, and marine industries where high reliability and durability are required.
Q5: What maintenance is required?
A5: Regularly check the stem packing, lubrication system, and sealant ports. The metal seat design reduces frequent seat replacement and lowers downtime.
