Trunnion Ball Valves
A trunnion ball valve is a type of quarter-turn valve that is widely used in various industries for controlling the flow of fluids. It is named after the trunnion, which is a fixed shaft or extension on which the ball is supported. The trunnion design provides stability and reduces the operating torque required to operate the valve. The main components of a trunnion ball valve include a hollow ball with a bore through its center, seats, stem, trunnion, and seals. The ball has a hole through which the fluid flows when the valve is open. The seats are located on either side of the ball and provide a tight seal when the valve is closed.
TBV and TBVH Series Trunnion Ball Valves
A trunnion ball valve is a type of quarter-turn valve that is widely used in various industries for controlling the flow of fluids. It is named after the trunnion, which is a fixed shaft or extension on which the ball is supported. The trunnion design provides stability and reduces the operating torque required to operate the valve.
The main components of a trunnion ball valve include a hollow ball with a bore through its center, seats, stem, trunnion, and seals. The ball has a hole through which the fluid flows when the valve is open. The seats are located on either side of the ball and provide a tight seal when the valve is closed.
The trunnion is a fixed shaft that supports the ball and helps to maintain its position. It absorbs the thrust generated by the pressure of the fluid, which allows the valve to handle high-pressure applications with ease. The stem connects to the ball and is used to rotate the ball to open or close the valve.
Trunnion ball valves can be classified into two types based on the construction of the ball: floating ball and trunnion-mounted ball valves. In a floating ball valve, the ball is not fixed to the trunnion and relies on the pressure of the fluid to sit against the seals. In a trunnion-mounted ball valve, the ball is fixed to the trunnion, providing additional support and sealing capability.
These trunnion ball valves are known for their excellent sealing properties, high flow capacity, and ability to handle high-pressure and high-temperature applications. They are commonly used in industries such as oil and gas, petrochemicals, power generation, and water treatment.
Trunnion ball valves are available in various sizes, pressure ratings, and materials to suit different operating conditions. They can be operated manually or with the help of actuators for automated control. Additionally, they can be designed to accommodate different end connections, such as flanged, threaded, or welded ends.
Trunnion Ball Valves Features:
- Fixed ball with double sealing
- Automatic compensation of seat sealing
- Low operating torque
- Handle as an indicator of flow direction
- Positive handle stop
- Handle color options are available
- Compact maximum-flow design
- Trunnion-stye ball: Prevents ball blowout.
- 2-or 3-way flow patterns
- Spring-load seats: Provide leak-tight integrity in both low and high-pressure systems, reducing seat wear from pressure surges.
- Leak-tight performance testing for every valve at the maximum working pressure with nitrogen
- TBV Maximum working pressure:6000 psig (413 bar）
- TBVH Maximum working pressure: 10000 psig （689 bar）
- Working temperature: 0°F to 450°F（-18°℃ to 232°C）
Trunnion Ball Valves Materials of Construction:
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| Item | Component | Valve Body Material | |
| 316 Stainless Steel | |||
| 2-way | 3-way | ||
| Material Grade/ASTM Specification | |||
| 1 | Handle | Nylon or Aluminium | |
| 2 | Panel Nut | 316SS/B783 | |
| 3 | Body | 316 SS/A479 | 316 5S/A182 |
| 4 | End Connector | 316 SS/A479 | |
| 5 | Seat Retainer Backup Ring | Reinforced PTFE | |
| 6 | Seat Retainer O-ring | Fluorocarbon FKM | |
| 7 | Seat Retainer Guide | 316 SS/A276 | |
| 8 | End Connector Seal | PTFE/D1710 | |
| 9 | Trunnion O-ring | Fluorocarbon FKM | — |
| 10 | Trunnion Backup Ring | Reinforced PTFE | — |
| 11 | Trunnion Bearing | — | PEEK |
| 12 | Ball | 316 SS/A276 | S21800/A276 |
| 13 | Seat Spring | Alloy X-750/AMS 5542 | |
| 14 | Seat Retainer | 316 SS/A276 | |
| 15 | Seat | PTFE or PEEK or PCTFE | |
| 16 | Stem | 316 SS/A276 | |
| 17 | Stem Washer | Reinforced PTFE | PEEK |
| 18 | Stem O-ring | Fluorocarbon FKM | |
| 19 | Secondary Stem Backup Ring | — | PTFE/D710 |
| 20 | Primary Stem Backup Ring | — | PEEK |
| 21 | Pin | Stainless Steel | |
| 22 | Set Screw | Stainless Steel | |
Trunnion Ball Valves Types:
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 |
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| 3 Way Female Threaded Trunnion Ball Valves | 3 Way Double Ferrules Trunnion Ball Valves | Female Threaded Trunnion Ball Valves |
Trunnion Ball Valves Dimensions:
1. 2-way Trunnion Ball Valves (TB Series-6000PSI)
| Basic Ordering Number |
Connection Type and Size |
Orifice in.(mm) |
Cv | Dimension, in.(mm) | |||||
| A | B | C | D | E | F | ||||
| -TB-FN2-5 | 1/8 Female NPT | 0.19 (4.8) |
1.2 | 2.94 (74.7) |
1.47 (37.3) |
0.50 (12.7) |
1.88 (47.7) |
1.57 (40.0) |
2.56 (65.0) |
| -TB-FN4-5 | 1/4 Female NPT | 0.19 (4.8) |
1.2 | 2.94 (74.7) |
1.47 (37.3) |
0.50 (12.7) |
1.88 (47.7) |
1.57 (40.0) |
2.56 (65.0) |
| -TB-FN6-7 | 3/8 Female NPT | 0.19 (4.8) |
1.2 | 3.93 (99.8) |
1.97 (49.9) |
0.50 (12.7) |
1.88 (47.7) |
1.57 (40.0) |
2.56 (65.0) |
| -TB-FN8-9 | 1/2 Female NPT | 0.19 (4.8) |
1.2 | 4.25 (108) |
2.13 (54.0) |
0.50 (12.7) |
1.88 (47.7) |
1.57 (40.0) |
2.56 (65.0) |
| -TB-FT4-5 | 1/4 Tube | 0.19 (4.8) |
1.2 | 4.09 (103.8) |
2.04 (51.9) |
0.50 (12.7) |
1.88 (47.7) |
1.57 (40.0) |
2.56 (65.0) |
| -TB-FT6-5 | 3/8 Tube | 0.19 (4.8) |
1.2 | 4.25 (108) |
2.13 (54.0) |
0.50 (12.7) |
1.88 (47.7) |
1.57 (40.0) |
2.56 (65.0) |
| -TB-FT8-5 | 1/2 Tube | 0.19 (4.8) |
1.2 | 4.60 (116.8) |
2.30 (58.4) |
0.50 (12.7) |
1.88 (47.7) |
1.57 (40.0) |
2.56 (65.0) |
| -TB-MT4-5 | 6mm Tube | 0.19 (4.8) |
1.2 | 4.09 (103.8) |
2.04 (51.9) |
0.50 (12.7) |
1.88 (47.7) |
1.57 (40.0) |
2.56 (65.0) |
| -TB-MT8-5 | 8mm Tube | 0.19 (4.8) |
1.2 | 4.14 (105.2) |
2.07 (52.6) |
0.50 (12.7) |
1.88 (47.7) |
1.57 (40.0) |
2.56 (65.0) |
| -TB-MT10-5 | 10mm Tube | 0.19 (4.8) |
1.2 | 4.25 (108) |
2.13 (54.0) |
0.50 (12.7) |
1.88 (47.7) |
1.57 (40.0) |
2.56 (65.0) |
| -TB-MT12-5 | 12mm Tube | 0.19 (4.8) |
1.2 | 4.60 (116.8) |
2.30 (58.4) |
0.50 (12.7) |
1.88 (47.7) |
1.57 (40.0) |
2.56 (65.0) |
2-way Trunnion Ball Valves (TBVH Series-10000PSI)
| Basic Ordering Number |
Connection Type and Size |
Orifice in.(mm) |
Cv | Dimension, in.(mm) | |||||
| A | B | C | D | E | F | ||||
| -TBH-FN2-5 | 1/8 Female NPT | 0.19 (4.8) |
1.2 | 2.94 (74.7) |
1.47 (37.3) |
0.50 (12.7) |
1.88 (47.7) |
1.57 (40.0) |
2.56 (65.0) |
| -TBH-FN4-5 | 1/4 Female NPT | 0.19 (4.8) |
1.2 | 3.93 (99.8) |
1.96 (44.9) |
0.50 (12.7) |
1.88 (47.7) |
1.57 (40.0) |
2.56 (65.0) |
| -TBH-FN8-9 | 1/2 Female NPT | 0.19 (4.8) |
1.2 | 4.25 (108) |
2.13 (54.0) |
0.50 (12.7) |
1.88 (47.7) |
1.57 (40.0) |
2.56 (65.0) |
| Basic Ordering Number | Connection Type and Size | Orifice in.(mm) | Cv | Dimension, in.(mm) | |||||
| A | B | C | D | E | F | ||||
| -TBH-FT4-5 | 1/4 Tube | 0.19 (4.8) |
1.2 | 4.09 (103.8) |
2.04 (51.9) |
0.50 (12.7) |
1.88 (47.7) |
1.57 (40.0) |
2.56 (65.0) |
| -TBH-FT6-5 | 3/8 Tube | 0.19 (4.8) |
1.2 | 4.25 (108) |
2.13 (54.0) |
0.50 (12.7) |
1.88 (47.7) |
1.57 (40.0) |
2.56 (65.0) |
| -TBH-FT8-5 | 1/2 Tube | 0.19 (4.8) |
1.2 | 4.60 (116.8) |
2.30 (58.4) |
0.50 (12.7) |
1.88 (47.7) |
1.57 (40.0) |
2.56 (65.0) |
| -TBH-MT4-5 | 6mm Tube | 0.19 (4.8) |
1.2 | 4.09 (103.8) |
2.04 (51.9) |
0.50 (12.7) |
1.88 (47.7) |
1.57 (40.0) |
2.56 (65.0) |
| -TBH-MT8-5 | 8mm Tube | 0.19 (4.8) |
1.2 | 4.14 (105.2) |
2.07 (52.6) |
0.50 (12.7) |
1.88 (47.7) |
1.57 (40.0) |
2.56 (65.0) |
| -TBH-MT10-5 | 10mm Tube | 0.19 (4.8) |
1.2 | 4.25 (108) |
2.13 (54.0) |
0.50 (12.7) |
1.88 (47.7) |
1.57 (40.0) |
2.56 (65.0) |
| -TBH-MT12-5 | 12mm Tube | 0.19 (4.8) |
1.2 | 4.60 (116.8) |
2.30 (58.4) |
0.50 (12.7) |
1.88 (47.7) |
1.57 (40.0) |
2.56 (65.0) |
2. 3-way Trunnion Ball Valves (TVB Series-6000PSI)
| Basic Ordering Number |
Connection Type and Size |
Orifice in.(mm) |
Cv | Dimension, in.(mm) | |||||
| A | B | C | D | E | F | ||||
| -TB-FN2-5-3W | 1/8 Female NPT | 0.19 (4.8) |
0.75 | 2.94 (74.7) |
1.47 (37.3) |
1.06 (26.9) |
1.88 (47.7) |
1.57 (40.0) |
2.56 (65.0) |
| -TB-FN4-5-3W | 1/4 Female NPT | 0.19 (4.8) |
0.75 | 2.94 (74.7) |
1.47 (37.3) |
1.06 (26.9) |
1.88 (47.7) |
1.57 (40.0) |
2.56 (65.0) |
| -TB-FN6-7-3W | 3/8 Female NPT | 0.19 (4.8) |
0.75 | 3.93 (99.8) |
1.97 (49.9) |
1.06 (26.9) |
1.88 (47.7) |
1.57 (40.0) |
2.56 (65.0) |
| -TB-FN8-9-3W | 1/2 Female NPT | 0.19 (4.8) |
0.75 | 4.25 (108) |
2.13 (54.0) |
1.06 (26.9) |
1.88 (47.7) |
1.57 (40.0) |
2.56 (65.0) |
| -TB-FT4-5-3W | 1/4 Tube | 0.19 (4.8) |
0.75 | 4.09 (103.8) |
2.04 (51.9) |
1.06 (26.9) |
1.88 (47.7) |
1.57 (40.0) |
2.56 (65.0) |
| -TB-FT6-5-3W | 3/8 Tube | 0.19 (4.8) |
0.75 | 4.25 (108) |
2.13 (54.0) |
1.06 (26.9) |
1.88 (47.7) |
1.57 (40.0) |
2.56 (65.0) |
| -TB-FT8-5-3W | 1/2 Tube | 0.19 (4.8) |
0.75 | 4.60 (116.8) |
2.30 (58.4) |
1.06 (26.9) |
1.88 (47.7) |
1.57 (40.0) |
2.56 (65.0) |
| -TB-MT4-5-3W | 6mm Tube | 0.19 (4.8) |
0.75 | 4.09 (103.8) |
2.04 (51.9) |
1.06 (26.9) |
1.88 (47.7) |
1.57 (40.0) |
2.56 (65.0) |
| -TB-MT8-5 | 8mm Tube | 0.19 (4.8) |
0.75 | 4.14 (105.2) |
2.07 (52.6) |
1.06 (26.9) |
1.88 (47.7) |
1.57 (40.0) |
2.56 (65.0) |
| -TB-MT10-5 | 10mm Tube | 0.19 (4.8) |
0.75 | 4.25 (108) |
2.13 (54.0) |
1.06 (26.9) |
1.88 (47.7) |
1.57 (40.0) |
2.56 (65.0) |
| -TB-MT12-5 | 12mm Tube | 0.19 (4.8) |
0.75 | 4.60 (116.8) |
2.30 (58.4) |
1.06 (26.9) |
1.88 (47.7) |
1.57 (40.0) |
2.56 (65.0) |
3-way Trunnion Ball Valves (TBH Series-10000PSI)
| Basic Ordering Number | Connection Type and Size | Orifice in.(mm) | Cv | Dimension, in.(mm) | |||||
| A | B | C | D | E | F | ||||
| -TBH-FN2-5-3W | 1/8 Female NPT | 0.19 (4.8) |
0.75 | 2.94 (74.7) |
1.47 (37.3) |
1.06 (26.9) |
1.88 (47.7) |
1.57 (40.0) |
2.56 (65.0) |
| -TBH-FN4-5-3W | 1/4 Female NPT | 0.19 (4.8) |
0.75 | 2.94 (74.7) |
1.47 (37.3) |
1.06 (26.9) |
1.88 (47.7) |
1.57 (40.0) |
2.56 (65.0) |
| -TBH-FN8-9-3W | 1/2 Female NPT | 0.19 (4.8) |
0.75 | 4.25 (108) |
2.13 (54.0) |
1.06 (26.9) |
1.88 (47.7) |
1.57 (40.0) |
2.56 (65.0) |
| -TBH-FT4-5-3W | 1/4 Tube | 0.19 (4.8) |
0.75 | 4.09 (103.8) |
2.04 (51.9) |
1.06 (26.9) |
1.88 (47.7) |
1.57 (40.0) |
2.56 (65.0) |
| -TBH-FT6-5-3W | 3/8 Tube | 0.19 (4.8) |
0.75 | 4.25 (108) |
2.13 (54.0) |
1.06 (26.9) |
1.88 (47.7) |
1.57 (40.0) |
2.56 (65.0) |
| -TBH-FT8-5-3W | 1/2 Tube | 0.19 (4.8) |
0.75 | 4.60 (116.8) |
2.30 (58.4) |
1.06 (26.9) |
1.88 (47.7) |
1.57 (40.0) |
2.56 (65.0) |
| -TBH-MT4-5-3W | 6mm Tube | 0.19 (4.8) |
0.75 | 4.09 (103.8) |
2.04 (51.9) |
1.06 (26.9) |
1.88 (47.7) |
1.57 (40.0) |
2.56 (65.0) |
| -TBH-MT8-5-3W | 8mm Tube | 0.19 (4.8) |
0.75 | 4.14 (105.2) |
2.07 (52.6) |
1.06 (26.9) |
1.88 (47.7) |
1.57 (40.0) |
2.56 (65.0) |
| -TBH-MT10-5-3W | 10mm Tube | 0.19 (4.8) |
0.75 | 4.25 (108) |
2.13 (54.0) |
1.06 (26.9) |
1.88 (47.7) |
1.57 (40.0) |
2.56 (65.0) |
| -TBH-MT12-5-3W | 12mm Tube | 0.19 (4.8) |
0.75 | 4.60 (116.8) |
2.30 (58.4) |
1.06 (26.9) |
1.88 (47.7) |
1.57 (40.0) |
2.56 (65.0) |
1. Sizes and types listed are standard. Other sizes and types are available upon request; refer to the ordering information.
2. Dimensions are shown with HZPT nuts finger-tightened. All dimensions are for reference only and are subject to change.
3. For dimensions not shown above, please contact the authorized representative or HZPT employees.
Advantages of Using the Trunnion Ball Valves:
Trunnion ball valves are a type of ball valve that is designed to handle high pressures and temperatures. They are often used in industrial applications, such as oil and gas production, chemical processing, and power generation. Here are some of the advantages of using trunnion ball valves:
1. Excellent Sealing: Trunnion ball valves provide excellent sealing performance due to the use of resilient seats that ensure a tight seal when the valve is closed. The trunnion-mounted ball design allows for even distribution of sealing forces, resulting in superior sealing integrity and reduced risk of leakage.
2. High Pressure Capability: Trunnion ball valves are designed to handle high-pressure applications effectively. The trunnion, which supports the ball, absorbs the thrust generated by the fluid pressure, preventing excessive stress on the seats and providing enhanced pressure containment capabilities.
3. Low Operating Torque: The trunnion design reduces the operating torque required to open and close the valve compared to floating ball valves. This feature makes the valve easier to operate, particularly in larger sizes and higher pressure classes, reducing the strain on the valve actuator and making it more cost-effective to automate.
4. Wide Range of Applications: Trunnion ball valves are suitable for a wide range of applications, including oil and gas, petrochemical, power generation, and water treatment. They can handle various fluids, including corrosive and abrasive media, and are compatible with high temperatures and pressures.
5. Minimal Maintenance: Trunnion ball valves require minimal maintenance due to their robust design and reliable sealing. The trunnion-mounted ball eliminates the need for frequent adjustments or reseating of the ball, reducing downtime and maintenance costs.
6. High Flow Capacity: Trunnion ball valves have a full-bore design, allowing for unobstructed flow through the valve when it is fully open. This feature minimizes pressure drop across the valve, resulting in high flow capacity and improved efficiency in fluid transportation systems.
7. Versatility: Trunnion ball valves are available in a wide range of sizes, pressure ratings, and materials, providing flexibility to meet specific application requirements. They can be customized with various end connections, such as flanged, threaded, or welded ends, to fit into different piping systems.
8. Long Service Life: The durable construction and robust materials used in trunnion ball valves contribute to their long service life. They are designed to withstand harsh operating conditions, including high pressures, temperatures, and frequent cycling, ensuring reliable performance over an extended period.
How Does the Trunnion Ball Valve Work?
A trunnion ball valve is a type of valve that uses a spherical ball to control the flow of fluid. The ball is attached to a stem, which is supported by two trunnions. The trunnions are shafts that are attached to the valve body and act as a pivot point for the ball. This design allows the ball to rotate within the valve while remaining in place.
To open or close the valve, the stem is rotated 90 degrees. When the valve is open, the ball is aligned with the flow of fluid and allows it to pass through. When the valve is closed, the ball is perpendicular to the flow of fluid and blocks it.
Trunnion ball valves are well-suited for high-pressure and large-diameter applications. The trunnions provide additional support for the ball, which prevents it from being deformed by the pressure of the fluid. The trunnions also help to reduce the torque required to operate the valve.
Here is a more detailed explanation of how a trunnion ball valve works:
- The ball is held in place by the trunnions, which are attached to the valve body.
- The stem is connected to the ball and is used to rotate it.
- When the stem is rotated 90 degrees, the ball rotates with it.
- When the ball is aligned with the flow of fluid, the valve is open and fluid is allowed to pass through.
- When the ball is perpendicular to the flow of fluid, the valve is closed and fluid is blocked.
Trunnion ball valves are used in a wide variety of applications, including:
- Oil and gas industry
- Petrochemical industry
- Power industry
- Water and wastewater treatment industry
- Food and beverage industry
- Pharmaceutical industry
Trunnion ball valves are known for their durability, reliability, and ability to handle high pressures and temperatures. They are also relatively easy to operate and maintain.
China Instrumentation Ball Valve Manufacturers
We're well-known as one of the leading trunnion ball valve manufacturers and suppliers, specializing in providing different kinds of fittings, instrument valves and flanges. We warmly welcome you to buy high quality trunnion ball valves in stock from our factory. 3 Way Female Threaded Trunnion Ball Valves 6000PSI, High Performance Ball Valves, 3 Way Double Ferrules Trunnion Ball Valves 6000PSI.
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Additional information
| Editor | Yjx |
|---|
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