API 6D Standard Trunnion Mounted Ball Valve with Double Block and Bleed and Fire-Safe Anti-Static Design
Product Details
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The API Standard Trunnion Mounted Ball Valve series is engineered for high-pressure industrial applications requiring exceptional reliability and safety. Compliant with API 6D and ASME B16.34 standards, these valves are designed for heavy-duty service in oil and gas transmission, petrochemical plants, and power generation.
The trunnion-mounted design features a fixed ball with floating seats, ensuring consistent sealing performance and significantly lower operating torque compared to floating ball valves, especially in large-diameter and high-pressure systems.
- Trunnion-Supported Ball: The ball is supported by high-strength bearings at the top and bottom, distributing hydraulic loads to the body and ensuring stable operation.
- Double Block and Bleed (DBB): Provides independent sealing on both upstream and downstream sides, allowing for safe cavity venting and integrity testing.
- Automatic Cavity Relief: Integrated seat design automatically relieves excess pressure from the body cavity to the downstream pipeline.
- Low Operating Torque: Self-lubricating bearings and advanced seat materials reduce friction, making them ideal for automated actuation.
- Blow-out Proof Stem: High-security stem design prevents stem ejection under system pressure.
- Fire-Safe & Anti-Static: Engineered to meet API 607/API 6FA standards for fire safety and anti-static protection.
- Design: API 6D, ASME B16.34
- Face-to-Face: ASME B16.10, API 6D
- Flange Dimensions: ASME B16.5, MSS SP-44
- Butt-Weld Ends: ASME B16.25
- Inspection & Testing: API 6D, API 598
| Parameter | Specifications |
|---|---|
| Size Range | 2" to 28" (DN50 - DN700) |
| Pressure Class | ASME Class 400, Class 600 |
| Body Materials | WCB, LCB, CF8, CF8M, CF3, CF3M, Duplex Steel |
| Seat Materials | PTFE, RPTFE, Nylon, PEEK, Metal-to-Metal |
| Temperature Range | -46°C to +250°C (depending on material selection) |
| Operation | Lever (Q47), Worm Gear (Q347), Electric/Pneumatic (Q947) |
- Face-to-Face (L): From 292mm (2") to 1397mm (28")
- Flange Diameter (D): Up to 1035mm for 28"
- Weight: Ranging from 25kg (2") to 5000kg (28")
- Face-to-Face (L): From 292mm (2") to 1549mm (28")
- Flange Diameter (D): Up to 1073mm for 28"
- Weight: Ranging from 25kg (2") to 6500kg (28")
- Valve Model: Q47 (Lever), Q347 (Gear), Q947 (Electric/Pneumatic)
- Size & Pressure Class
- End Connection: Flanged (RF/RTJ) or Butt-Weld (BW)
- Material Configuration: Body, Ball, Stem, and Seat materials
- Service Media: Gas, Oil, Water, or Corrosive Fluids
Q47 Series Trunnion Mounted Ball Valve for high-pressure pipelines. Features fixed trunnion design for low torque, Double Block & Bleed, automatic pressure relief, and fire-safe compliance (API 6D/607). Available in carbon/stainless steel for oil, gas, and corrosive media.
CQA41F Series ball valve for LPG & chemical tankers. Features leak-proof one-piece body, adjustable floating seat, quick-connect interface, extreme temperature resistance (-40°C to +80°C), and corrosion-resistant stainless steel construction. Certified for hazardous media handling with 2.5 MPa nominal pressure.
QDY421F/QDQ421F Gas-Liquid Emergency Shut-Off Valve provides rapid 5-second shutdown for LPG & ammonia systems. Features fail-safe fusible links (70°C melt), bubble-tight PTFE seals, and durable carbon/stainless steel construction. Customizable hydraulic/pneumatic actuation.
Q41F Series Floating Ball Valve offers reliable on/off control with precision floating ball design, 90-degree quick operation, full bore flow, and blow-out proof stem. Available in carbon steel or stainless steel with PTFE/PPL seats for chemical resistance and temperature stability up to 250°C.
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