Double Block and Bleed ball valve specificationBrand name : GOOLE VALVEModel number : GADBB41F Nominal Diameter:DN15-DN1200...
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DBB ball valves are designed for key industries such as oil, gas, petrochemical, and chemical processing. Their three-piece structure is easy to maintain, and installation and operation are flexible. The ball is installed through the shaft neck, which reduces the movement of the ball under pressure, ensuring reliable sealing and extending service life, especially suitable for high-pressure systems. The valve is equipped with double block and vent (DBB) functionality, which provides enhanced isolation performance and safe discharge of trapped fluids during maintenance. It is available in both threaded and flange connections for different pipeline configurations.
● Anti-Static Design: Prevents the accumulation of static electricity to ensure the safe handling of flammable or volatile chemicals.
● Dual Block and Bleed (DBB) Function: Offers two layers of isolation to enhance leak prevention and safety during maintenance.
● Flexible Connection Options: Can accommodate docking welding (BW) and socket welding (SW) connections, making it easy to integrate into various systems.
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 DBB 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:Can the valve handle high-pressure applications?
Yes, the DBB Ball Valve is specifically designed to handle high-pressure environments while ensuring reliable performance.
Our DBB ball valve design prioritizes safety and performance, featuring advanced attributes such as an anti-static design and dual-block and bleed (DBB) functionality. We recognize that each application has distinct requirements, and therefore, we provide tailored solutions to fulfill your specific needs. Should you need flexible installation options, including butt welding (BW) and socket welding (SW) connections, or if you're seeking fire safety certification for high-risk environments, we guarantee that your system will operate safely and efficiently. Opt for our dependable, high-performance valves, engineered to satisfy the rigorous demands of your most critical applications.
