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The 3-PC Trunnion Mounted DBB Ball Valve is designed for critical applications in industries such as oil and gas, petrochemicals, and chemical processing. It features a three-piece body design, which provides easy maintenance and flexibility during installation and operation. The trunnion-mounted ball ensures reliable sealing and extended service life by reducing the ball’s movement under pressure, making it ideal for high-pressure systems.
This valve is equipped with double block and bleed (DBB) functionality, offering enhanced isolation and the ability to safely discharge trapped fluids during maintenance. The valve is available with both threaded and flanged connection options, providing versatility for different pipeline configurations.
● Easy to Service: The 3-piece design allows for easy maintenance and quick disassembly.
● Reliable Sealing: Trunnion mounting ensures stable and consistent sealing under high-pressure conditions.
● High-Pressure Suitability: Designed to perform reliably in high-pressure environments.
● Durable Construction: Built to withstand the demands of industrial environments, offering long-lasting performance.
NO | Part name | Material | |
| GB | ASTM | ||
| 1 | Valve body | WCB | A2116-WCB |
| 2 | Sealing ring | PTFE | PTFE |
| 3 | Sphere | 1C18Ni9Ti | SS304 |
| 4 | Nut | 35 | A194-2H |
| 5 | Stud | 35CrMoA | A193-B7 |
| 6 | The stone body | WCB | A216-WCB |
| 7 | Shim | Graphite + stainless steel | B12.10-304F/.G |
| 8 | Filler | PTFE | PTFE |
| 9 | Packing gland | WCB | A2116-WCB |
| 10 | Locating piece | 25 | A105 |
| 11 | Ring | 65Mn | AISI 1066 |
| 12 | Handle | K33 | A47-667 Gr.32510 |
| 13 | Valve stem | 1Cr33 | A276-410 |
| 14 | Screw | 35 | A193-B7 |
| Thrust washer | PTFE | PTFE | |
| Nominal diameter | 15 | 20 | 25 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 |
| d1 | 13 | 19 | 25 | 38 | 64 | 64 | 76 | 102 | 127 | 152 | 203 |
| L | 108 | 117 | 127 | 165 | 191 | 191 | 203 | 229 | 356 | 394 | 457 |
| H | 59 | 63 | 75 | 95 | 142 | 142 | 152 | 178 | 252 | 272 | 342 |
| W | 130 | 130 | 160 | 230 | 400 | 400 | 400 | 650 | 1050 | 1050 | 1410 |
| Wt(kg) | 2.5 | 3 | 5 | 7 | 15 | 19 | 19 | 33 | 58 | 93 | 160 |
| Primari Isonation | Secondary Isolation | Drain |
| Ball | Ball | Needle |
| Needle | Needle | Needle |
| Ball | Needle | Needle |
| Size: | 2" ~ 24"(DN50~DN400) | ||||||||
| Pressure: | ANSI Ratings 150# ~ 2500# (PN16~PN420) | ||||||||
| Structure: | 3 Pieces Body Design | ||||||||
| Connections: | RF RTJ BW Connections | ||||||||
| Body Material: | ASTM A105, A182 304, A182 316, A182 304L, A182 316L,A182 F6A,A182,F51,A182 F53,F22 Alloy | ||||||||
| Ball Material: | ASTM A105, A182 304, A182 316, A182 304L, A182 316L,A182 F6A,A182,F51,A182 F53,F22 Alloy | ||||||||
| Seats Material: | PTFE/ RTFE(≤120ºC) , NYLON (≤80ºC), PEEK/PPL (≤250ºC) | ||||||||
| Driving means: | Manual,worm gear.etc. | ||||||||
| Flow direction: | bidirectional | ||||||||
| Applicable medium: | Seawater,all kinds of harsh environment | ||||||||
Q1:What is a 3-PC Trunnion Mounted Ball Valve?
It is a ball valve with a three-piece body design and a trunnion-mounted ball, ensuring reliable sealing and ease of maintenance.
Q2:What are the advantages of the trunnion-mounted design?
The trunnion-mounted ball reduces the risk of ball wear and provides stable sealing, making the valve suitable for high-pressure applications.
Q3:Can the valve handle high-pressure applications?
Yes, the 3-PC Trunnion Mounted DBB Ball Valve is specifically designed to handle high-pressure environments while ensuring reliable performance.
Choose us for valves built with the highest quality materials, ensuring exceptional durability and long-lasting performance. Our 3-PC Trunnion Mounted DBB Ball Valve is designed to withstand harsh environments, providing reliable operation even under high pressure. We offer superior safety, customizable solutions, and professional support.
