One Piece Forged Steel DBB Valve(DBBQ41F)
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DBB ball valves are designed for critical applications in industries such as oil and gas, petrochemicals, and chemical processing. It adopts a three piece body design, which is easy to maintain and flexible during installation and operation. The ball installed on the ear shaft ensures reliable sealing and extends service life by reducing the movement of the ball under pressure, making it an ideal choice for high-pressure systems.
This valve is equipped with dual block and discharge (DBB) function, providing enhanced isolation and the ability to safely discharge trapped fluids during maintenance. This valve offers options for threaded and flanged connections, providing versatility for different pipeline configurations.
● 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 | |
Main Dimensions
| 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.
Our DBB ball valve design emphasizes safety and performance, featuring advanced features such as anti-static design and dual-block venting (DBB) functionality. We understand that each application has unique requirements, so we offer customized solutions to meet your specific needs. If you require flexible installation options, including butt welding (BW) and socket welding (SW) connections, or seek fire safety certification in high-risk environments, we assure you that your system will operate safely and efficiently. Choose our reliable, high-performance valves, designed to meet the stringent requirements of your most critical applications.
