Trunnion Mounted Ball Valve

Trunnion Mounted Ball Valve Manufacturer

TIANYU are top of the best professional Trunnion-Mounted Ball Valve Manufacturers in China.
Design Standards: API 6D, API 608, ISO 17292, BS 5351
Size Range: 1/4 – 60 Inch
Pressure Range: Class 150-2500 LB, 10000 PSI (API 6A Products)
Material Range: Cast Steel, Forged Steel, Carbon Steel, Stainless Steel, Alloy Steel, Bronze, Ti
End Connections: Flanged (FF, RF, RTJ), Socket Weld (SW), Threaded (NPT, BSP), Butt Weld (BW), HUB
Body Structures: End Entry, Top Entry (easy for on-line maintenance)
Body Types: 2pc split body, 3pcs split body
Body&Bonnet Connection: Bolted Bonnet, Full Welded Bonnet (for Hazardous service need longer working life with less leakage point)

API 6D API 609 ASME CE DN15-DN300 150lb-2500lb Forged Steel A105 Full Port 3PC Flange Trunnion Mounted Ball Valve with Fire-Safe & Anti-Static Design

TIANYU’s API 6D/609-certified Forged Steel A105 Trunnion Mounted Ball Valve is a premium solution for critical industrial fluid control. Its robust forged construction, trunnion-mounted design, and dual-seal seats ensure reliable, bubble-tight performance under high pressure (up to 2500lb) and temperature (-29℃–425℃). Fire-safe and anti-static features enhance safety in hazardous environments, while the three-piece body enables easy maintenance. Full-port design minimizes energy loss, and global standard compliance ensures versatility across oil & gas, petrochemical, and power sectors. Trusted for durability, safety, and efficiency, it delivers long-term value and operational peace of mind.

API 6D API 608 ASME CE DN300 600LB Carbon/Stainless Steel F316/WCB 3PC Fire-Safe Flanged Pneumatic Trunnion Mounted Ball Valve

Customize this TIANYU valve to your operational needs: opt for 2205 duplex steel for extreme offshore corrosion, Inconel alloy for high-temperature (500℃+) service, or titanium for chemical resistance. Upgrade to 2500LB pressure for ultra-high-duty wellheads, select Viton seals for oil-rich media, or add ATEX/IECEx certification for explosive zones. Integrate smart electric actuators with IoT connectivity for remote monitoring, or choose reduced-port design for space constraints. These tweaks optimize performance, extend service life, and cut long-term costs—delivering a valve tailored to your unique workflow.

API6D API607 ASME CE DN300 600LB Stainless Steel SS316/SS304 3PC Flange Trunnion Mounted Fire-Safe Ball Valve for Oil & Gas Petrochemical Applications

TIANYU’s 3PC trunnion ball valve adapts to your needs: upgrade to 2205 duplex steel for extreme offshore corrosion, opt for Viton seals for high-temperature (200–250℃) media, or select Class 900 pressure for ultra-high-duty applications. Add ATEX/IECEx certification for explosive zones, or integrate smart electric actuators with Modbus TCP for remote SCADA control. These tweaks boost durability, align with your specific media/pressure needs, and cut long-term costs—delivering a valve tailored to your operation’s unique demands.

API6D/ASME/CE DN250 150LB Stainless Steel SS316/SS304 Side-Entry Fire-Safe Pneumatic Actuated Flange Ball Valve for Oil & Gas

Customizing this TIANYU valve tailors it to your unique needs: choose 2205 duplex steel for extreme corrosion, Viton seals for high-temperature media, or 300LB pressure rating for heavy-duty applications. Opt for electric actuators for remote areas or explosion-proof designs for hazardous zones. Add position transmitters or emergency shutdown features. These tweaks boost durability, align with your specific工况 (working conditions), and cut long-term costs—delivering a valve that fits your operation perfectly.

API 6D/608 ASME Class 600 High-Pressure A105N Trunnion Mounted Flange Ball Valve

TIANYU A105N trunnion mounted flange ball valve (Class 600, 16×14”) delivers ultra-high-pressure reliability, durability, and safety for oil & gas, petrochemical, and industrial systems. Its trunnion design, A105N construction, and metal hard seal ensure stable performance in harsh environments.Customize with 316L/2205 duplex steel for corrosive media, Stellite 6/ceramic trim for abrasives, higher pressure ratings (900LB+), or electric/hydraulic actuation for automation. Opt for NACE MR0175 compliance for sour gas, RTJ flanges for ultra-high pressure, or low-temperature packing for cryogenic applications. Tailor to your media, pressure, and operational needs for optimal performance.

API 6D/608 High-Pressure DN350 Class150-600 Trunnion Mounted Flanged Carbon Steel Ball Valve

TIANYU trunnion mounted flanged carbon steel ball valve is a rugged, high-performance flow control solution engineered specifically for the demanding requirements of oil & gas pipelines, natural gas transmission systems, and heavy industrial production. As a trunnion-mounted (fixed ball) valve, it features a structurally superior design where the ball is supported by upper and lower trunnions—transferring fluid pressure forces to robust bearings instead of relying on valve seats. This configuration ensures exceptional sealing stability, reduced operational torque, and extended service life in high-pressure, high-cycle applications where leakage or structural failure could lead to catastrophic safety hazards, environmental damage, or costly production downtime.

Trunnion Mounted ball valves excel in high-pressure, low-torque, and bidirectional sealing for industries.

The trunnion-mounted ball valve is mainly used in the pipeline for on-off applications.
Trunnion Mounted ball valves have become the preferred choice for large-diameter and high-pressure pipeline systems in industrial fields due to their high-pressure stability, low-torque operation, and bidirectional sealing capability. They excel particularly in scenarios requiring long-term reliable sealing and safe shut-off.

THE STRUCTURE OF TRUNNION MOUNTED BALL VALVES

TianYu Trunnion Mounted Ball Valve is a type of ball valve with a fixed ball supported by trunnions, or pivots, at the top and bottom, providing stability and reducing the torque required to operate the valve. This design allows for better handling of high-pressure applications and larger valve sizes. The trunnion supports absorb the pressure load, making the valve suitable for demanding environments. Trunnion ball valves offer reliable sealing and minimal leakage, making them ideal for use in oil and gas, petrochemical, and industrial applications. Their robust construction ensures durability, low maintenance, and efficient performance in critical systems.

The ball is fixed by a stem and trunnion, and the seats are a spring-loaded assembly of seat retainer (Metal) and seat insert (Soft). Under low pressure the spring will force the seat to ball and when under high pressure, the fluid will push the seats to seal. Compared with floating valves, it has a wider size and pressure range, with lower operation torque which can save the actuator cost.

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Trunnion Mounted Ball Valve Parts

Why Choose Us

Ensure Safety

Our products and services comply with international standards and specifications to make sure that we only produce the best and highest quality products and services to our clients.

Customization Service

We offer tailor-made industrial valves to ensure that our product fits your application standards and demand. TIANYU is ISO, API, MSS, and ASME compliant to guarantee you the highest product quality.

Fast Shipping

As a business partner, TIANYU makes sure that we commit to our clients’ requested deadline because we very much understand the importance of adhering to the timeline required.

After-Sales Service

TIANYU’s service does not end once our industrial ball valves are being delivered. Also, we offer warranties and provide customer service to our clients as part of our quality service.