Trunnion Mounted Ball Valve
Trunnion ball valve manufacturer and supplier with API 6D certificate in China. Trunnion mounted ball valves are with reliable sealing performance and best price. View price, drawing and dimensions online.
Relia is one of the most reputable trunnion mounted ball valve manufacturers and suppliers in China. Our trunnion ball valves are designed to API 6D, with the feature of bubble tight shut off, availability of DBB or DIB seats.
Key Specifications / Features
In a trunnion mounted ball valve, the ball is supported by the stem and trunnion, reducing the operating torque, while the seats are spring loaded. The ball will not move and the seats move with the medium pressure to tight the ball and seal ring to ensure sealing reliability. Trunnion mounted ball valves are widely used in oil & gas industry.
Product Specifications
| Ball Valve Type | Trunnion Mounted Ball Valve |
| Body Construction | Bolted Body/Welded Body/Top Entry |
| Body Material | Carbon Steel, Stainless Steel, Duplex Steel (Forged & Cast Steel) |
| Seat | Soft Seat: PTFE, Nylon, PEEK, PPL, Delrin, Devlon etc. |
| Metal Seated: Stellite, Tunsten Carbide, Chrome Carbide | |
| Size Range | 1-1/2”-56” (DN40-DN1400) |
| Class Rating | ANSI Class 150-2500 (PN20-PN420) |
| End Connection | Butt Welding, Flanged, Hub |
| Operator | Lever, Worm Gear, Electric, Penumatic, Etc. |
| Industry Servered | Oil, Gas, Power Gerneration |
Standard Specifications
| Design and Manufacture | API 6D |
| Wall Thickness | API 6D |
| Face-to-Face Dimension | API 6D |
| Flange End Dimension | ANSI/ASME B16.5 (1” to 24”) |
| ANSI/ASME B16.47 (26” & up) | |
| Butt-Weld End | ANSI/ASME B16.25 |
| Inspection & Testing | API 6D/API 598 |
| Fire Safe Design | API 607/BS 6755 |
| Material | Nace MR 0175 |
Trunnion Mounted Ball Valve Drawing
Material Specifications
| No. | Name of Part | A105/ENP | A105/F316 Nace | LF2/F316 | F316/F316 |
| 1 | Nut | ASTM A194 2H | ASTM A194 2HM | ASTM A194 7 | ASTM A193 B8 |
| 2 | Bolt | ASTM A193 B7 | ASTM A193 B7M | ASTM A320 L7 | ASTM A182 F316 |
| 3 | Bonnet | ASTM A105 | ASTM A105 | ASTM A320 LF2 | ASTM A182 F316 |
| 4 | Gasket | SS304+Graphite | SS316+Graphite | SS316+Graphite | SS316+Graphite |
| 5 | O-Ring | Viton AED | Viton AED | Vion AED | Vion AED |
| 6 | O-Ring | Viton AED | Viton AED | Vion AED | Vion AED |
| 7 | Graphite | SS304+Graphite | SS316+Graphite | SS316+Graphite | SS316+Graphite |
| 8 | Spring | Inconel X-750 | Inconel X-750 | Inconel X-750 | Inconel X-750 |
| 9 | Seat Ring | ASTM A105 | ASTM A182 F316 | ASTM A182 F316 | ASTM A182 F316 |
| 10 | Pin | Carbon Steel | Stainless Steel | Stainless Steel | Stainless Steel |
| 11 | Trunnion | ASTM A105 | ASTM A182 F316 | ASTM A182 F316 | ASTM A182 F316 |
| 12 | Bearing | Carbon Steel+Graphite | Carbon Steel+Graphite | Carbon Steel+Graphite | Carbon Steel+Graphite |
| 13 | Gasket | SS304+Graphite | SS316+Graphite | SS316+Graphite | SS316+Graphite |
| 14 | Ball | ASTM A105+ENP | ASTM A182 F316 | ASTM A182 F316 | ASTM A182 F316 |
| 15 | Drain Plug | Carbon Steel | Carbon Steel | Stainless Steel | Stainless Steel |
| 16 | Ring | ASTM A105+ENP | Stainless Steel | Stainless Steel | Stainless Steel |
| 17 | Seal Ring | Viton AED | Viton AED | Viton AED | Viton AED |
| 18 | Seat Ring | PTFE, Nylon, PEEK | PTFE, Nylon, PEEK | PTFE, Nylon, PEEK | PTFE, Nylon, PEEK |
| 19 | Feet | Carbon Steel | Carbon Steel | Carbon Steel | Carbon Steel |
| 20 | Injection Valve | Carbon Steel | Stainless Steel | Stainless Steel | Stainless Steel |
| 21 | Lifting Lug | Carbon Steel | Stainless Steel | Stainless Steel | Stainless Steel |
| 22 | Body | ASTM A105 | ASTM A105 | ASTM A320 LF2 | ASTM A182 F316 |
| 23 | Safety Valve | Carbon Steel | Carbon Steel | Carbon Steel | Carbon Steel |
| 24 | Relief Valve | Carbon Steel | Carbon Steel | Stainless Steel | Stainless Steel |
| 25 | Trunnion Bearing | Carbon Steel+Graphite | Carbon Steel+Graphite | Carbon Steel+Graphite | Carbon Steel+Graphite |
| 26 | Stem | ASTM A182 F6A | ASTM A182 F316 | ASTM A182 F316 | ASTM A182 F316 |
| 27 | Key | Carbon Steel | Carbon Steel | Carbon Steel | Carbon Steel |
| 28 | Thrust Washer | PTFE | PTFE | PTFE | PTFE |
| 29 | O-Ring | Viton AED | Viton AED | Vion AED | Vion AED |
| 30 | Stuffing Box | ASTM A105 | ASTM A105 | ASTM A350 LF2 | ASTM A193 B8 |
| 31 | Bolt | ASTM A193 B7 | ASTM A193 B7M | ASTM A320 L7 | ASTM A193 B8 |
| 32 | Packing | SS304+Graphite | SS316+Graphite | SS316+Graphite | SS316+Graphite |
| 33 | Adapter | ASTM A105 | ASTM A105 | ASTM A105 | ASTM A182 F316 |
| 34 | Bolt | ASTM A193 B7 | ASTM A193 B7M | ASTM A320 L7 | ASTM A193 B8 |
| 35 | Nut | A194 2H | A194 2HM | ASTM A194 7 | ASTM A194 8 |
| 36 | Bolt | ASTM A193 B7 | ASTM A320 L7 | ASTM A193 B8 | ASTM A193 B8 |
| 37 | Worm Gear | Ductile Iron | Ductile Iron | Ductile Iron | ASTM A194 8 |
Trunnion Mounted Ball Valve Price List – Feb. 2021
| Size | Class 150 | Class 300 | Class 600 | Class 900 | Class1500 |
| 2″ | $235 | $265 | $388 | $536 | $603 |
| 3″ | $324 | $587 | $725 | $969 | $1,111 |
| 4″ | $465 | $818 | $1,051 | $1,331 | $1,612 |
| 6″ | $1,515 | $1,655 | $2,332 | $2,802 | $3,505 |
| 8″ | $2,455 | $2,685 | $3,478 | $4,154 | |
| 10″ | $4,038 | $4,436 | $5,605 | $6,698 | |
| 12″ | $6,066 | $6,722 | $8,472 | ||
| 14″ | $7,702 | $8,936 | $11,784 | ||
| 16″ | $12,015 | $13,236 | $16,804 |
Trunnion Mounted Ball Valve Design Features
Basic Feature:-2 Piece or 3 Piece body, trunnion mounted ball valve
-Tight shut off sealing mechanism
-Low operation torque
-Fire safe tested
-Blowout-proof ball seat and stem
-Anti-static design
-Locking device for lever and gear operated
-ISO 5211 top mounting pad for actuator
Trunnion Ball Valve Double block and bleed (DBB)Double Block: When the ball is in the closed position, each seat seals off the process medium independently at the same time between the up/down stream.
Bleed/Self Cavity Relief (Self Relieving Seat): The trunnion mounted ball valve may trap the media in the body cavity when the operator closes the valve. The trapped fluid expands and the pressure increases in the cavity when heated. If the cavity pressure gets 1.33 times of the line pressure, the trapped fluid will push the seat of the downstream side away from the ball by rising pressure against the spring load. When this happens, the pressure gets released.
Trunnion Mounted Ball Valve, Double Block & Bleed.Typical application: Pipeline ball valves in liquid services, to prevent pressure buildup in body cavity due to change in temperatures.Secondary Metal to Metal Seat DesignStandard seat design is primary soft seal, and secondary metal to metal seal. Seat insert is designed as pressed-in type which is easy for maintenance. Optional design with primary metal to metal seal and secondary soft seal seat design is also available upon request.
Double Piston Effect Seats-(DPE*DPE) Optional
Double Piston Effect seats are designed to be pushed against the ball in both cases, whether pressure comes from body cavity or from upstream/ downstream side. Ball valve with DPE seats cannot perform cavity relief. For such reason -in liquid services- the use of a relief valve is recommended.
Typical application: Whenever it is necessary to create an additional safe barrier between the upstream and the downstream sides. Recommended in welded body valves, where seats maintenance is not foreseen.Combined SPE-DPE (Optional)Upstream SPE seat ensures self relieving capability, while downstream DPE seat grants the double barrier in case of upstream seat damage. This configuration involves a preferred direction of installation with SPE seat facing upstream. With SPE-DPE configurations, cavity relief always takes place through SPE seat.
Typical application:
Riser valves, pig launchers/receivers. DPE seat gives double isolation to the pig trap, allowing automaticrelief of body cavity at the same time in case of pressure build up.
Emergency Sealant Injection System
Each ball valve of size 6” and larger (or smaller size on request), is equipped with sealant injection located at stem and seats area. The injection is integrated with check valve to provide backup sealing, also a check valve is equipped at front of seat sealant injection to avoid blowing out in case wrong operation. When the soft sealing materials (seat inserts and o-rings) are damaged and leakage happened by fire or other accident, the sealant can be injected through the injection fittings.
Blow-out Proof Stem
The stem is made separately from the ball with integral T-type round shoulder, retained by gland.
Anti-static Device
Spring plus graphite type anti-static device are applied between the ball, stem, gland flange and body, to keep the electrical continuity between all the metallic components, and ensure the resistance lower than the most severe service requirement.Welcome to contact us for trunnion mounted ball valve price, we will quote you best price within 2 days with technical support.Why Trunnion Mounted Ball ValveTrunnion mounted ball valves are quarter-turn valves used to stop or start the flow of a media in a pipe.
Trunnion mounted ball valve is TMBV ball valves in short, also called trunnion supported ball valve or trunnion ball valve. In a trunnion mounted ball valve, the ball is supported by the stem and trunnion, reducing the operating torque, while the seats are spring loaded. The ball will not move and the seats move with the medium pressure to tight the ball and seal ring to ensure sealing reliability.Trunnion mounted ball valves from China trunnion mounted ball valve manufacturers are generally manufactured with the features of double block and bleed (DBB), cavity relief, bi-directional, fire safe and secondary metal to metal seated etc. The DBB design can block both upstream and downstream media. And when the pressure in the middle cavity is greater than the seat spring force, the seat will be pushed open to release the pressure inside the chamber to ensure safety.As trunnion mounted ball valve manufacturers & suppliers, Relia supplies trunnion mounted ball valves that are 100% under hydraulic and pneumatic test before leave the factory. The trunnion mounted ball valve price is mainly based on the material specification & construction, Relia trunnion mounted ball valve price is atrractive compared with its performance.
