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)

Class150 DN300-DN1000 Large Diameter WCB Carbon Steel Full Welded Trunnion-Mounted Ball Valve

TIANYU Class 150 DN300-DN1000 WCB full welded trunnion-mounted ball valve: worm gear operated, soft-sealed, -29℃~300℃, ANSI Class VI leakage. Ideal for municipal, oil/gas, chemical, power sectors needing reliable large-diameter flow control. API 6D compliant, cost-effective, low maintenance, with superior leak-tightness.Customize with 304/316 stainless steel body, RPTFE/PEEK seals, Class 300/600 pressure rating, fire-safe design (API 607), NACE MR0175 for sour service, or electric/pneumatic actuator. Tailor to your media, pressure, temperature, and installation requirements.

API 6D 600LB DN300 12inch High-Pressure Stainless Steel WCB Turbine Fixed (Trunnion-Mounted) Ball Valve

TIANYU 600LB DN300 12inch API 6D WCB turbine fixed ball valve: trunnion-mounted for high pressure, -29℃~350℃ temp range, API 598 leakage control. Ideal for oil, gas, chemical, power sectors needing reliable large-diameter flow control.Customize with 316L ball for extreme corrosion, API 607 fire-safe seal, electric/pneumatic actuator, NACE MR0175 for sour service, or ASME B16.5 Class 2500 flange. Tailor to your media, pressure, and standard needs.

API ASME 8 Inch DN200 600LB A105 RF Flanged Hard Seal Trunnion-Mounted Ball Valve with Pneumatic Actuator

TIANYU 8-inch 600LB trunnion-mounted ball valve, with A105 body, RF flanges, hard metal seals, and pneumatic actuation, delivers reliable flow control for oil, gas, and industrial systems. It features trunnion support, fire-safe/anti-static design, and API 6D compliance, suiting high-pressure pipelines, refineries, and power plants. Customizable in seal material, actuator type, and DBB functionality to meet specific application needs.

API6D 600LB Trunnion Mounted Ball Valve Fixed Ball WCB Material 600LB API6D Ball Valve

TIANYU trunnion mounted fixed ball valve, with DN50-DN900 port sizes and 150LB-600LB pressure, suits water, oil, gas. Made of WCB/stainless steel, it features PTFE seals, flange connections, and manual operation. Ideal for petroleum, chemical, gas sectors. Customization (materials, sizes) available to meet specific needs API6D 600LB Trunnion Mounted Ball Valve Fixed Ball WCB Material 600LB API6D Ball Valve

DN500 900LB Pneumatic Cryogenic Top Entry Ball Valve API 6D manual Top Entry Ball Valve Cryogenic Valves

DN500 900LB pneumatic cryogenic top entry ball valve: API 6D-compliant, reliable in -196℃, easy to maintain, safe. Ideal for LNG, air separation, low-temperature chemicals.Customize with: 316L for corrosion, Inconel seals for extreme temps, explosion-proof actuators, extended bonnets for insulation. Tailored to your cryogenic system’s media, pressure, control needs.

Cryogenic Top Entry Ball Valve API 6D Top Entry Ball Valve Cryogenic Valves

Cryogenic Top Entry Ball Valve API 6D Top Entry Ball Valve Cryogenic Valves compliant cryogenic top - entry ball valve excels in low - temperature reliability, easy maintenance, and safety. It is ideal for LNG, air separation, and cryogenic chemical applications.Customize with: 316L for corrosive media, Inconel seals for extreme temperatures, explosion - proof actuators, or extended bonnets for better insulation. Tailor it to your cryogenic system’s media, pressure, and control needs.

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.