They're designed to provide superior performance in a variety of applications, including offshore platforms, oil, gas, and other liquids pipelines, tank farms, meter stations, chemical processing plants and refineries. Therefore, for higher pressure applications a trunnion ball valve will provide better sealing and require less torque to turn. Forum's full catalog of PBV valve solutions offer a variety of stainless steel and high-nickel alloy weld overlays for internal surfaces. The carbon steel balls with electroless nickel plating (ENP) were completely degraded from the heavy brine environment, while the Inconel overlay valves showed zero signs of pitting or corrosion. Pressure class: ANSI 150-2500. Lower operational costs. For example, these designs offer a standard feature of a secondary emergency sealant injection system that provides temporary seals to otherwise damaged areas. In addition, the torque on the stem is also increased. Literature and data available on request. Double block and bleed and emergency sealant injection fittings are standard, along with NACE and fire-safe. Trunnion mounted ball valve weight. NACE/fire-safe design.
ANSI Class 150, 300, and 600. Forged Body Trunnion Mounted Ball Valves. Our tandem valves are designed to the highest manufacturing standard including American Petroleum Institute (API) and American National Standards Institute (ANSI). Focusing the full impact of oil and gas line media into the upstream valve permits the downstream valve to provide tight, bubble-tight shutoff and isolation that outperforms single valve systems. For a trunnion ball valve with a bleed function, the pressure in the ball pushes the seat back as the spring behind the seat compresses, and there is vent/bleeding between the sealing surfaces. Reliable, bubble-tight shut off is essential for isolation valves, but hostile service conditions – corrosive or abrasive environments and high pressures – place heavy demands on valve performance.
High pressure applications. Flanged ends, weld ends, flanged-X weld ends. ISO International Organization for Standardization. Tiger Valve Company (TVC) is a trunnion-mounted ball valve manufacturer for the TL and TB Series. Severe service areas can create difficult operating conditions that significantly reduce the working lifespan of oil and gas valves. API Standards: 6D & 6A. We manufacture all of our three-piece and two-piece trunnion ball valves to the highest engineering and quality standards. Correct material selection is essential to balance harsh effects from total system pressure, application temperature and elemental sulfur/chloride content. According to API 6D specifications, the venting/bleeding is required at a pressure of less than 1. During use, the ball floats slightly downstream against the seat ring and creates a sealing only on one side of the valve. In the trunnion valve design, the ball is not floating as it is connected to the trunnion. Due to this design change, the ball is held firmly in place.
The result is the highest-quality and most competitively-priced trunnion-mounted ball valve available. MR0175 Sulfide Stress Cracking Resistant Metallic Materials for Oilfield Equipment. ASME American Society of Mechanical Engineers. 6D Specification for Pipeline Valves. The result is added protection for vulnerable areas and improved performance even within the most hostile environments. NACE National Association of Corrosion Engineers. Below, you'll find further information on our trunnion ball valve materials, applications, and more. Firesafe to API-607/6FA. Pinion shaft extension with gear and miter box, upright orientation. Gear Operated Trunnion Ball Valve.
SP 25 Standard Marking System for Valves, Fittings, Flanges and Unions. A trunnion ball valve is designed by API608 or API 6D and complies with several other industry standards. Onshore or offshore, Forum's PBV® tandem ball valves withstand the most hostile hydrocarbon operating environments and provide positive shutoff for enhanced safety. The fluid remains trapped within the ball, which creates a resultant pressure in the ball.
In a floating ball valve the pressure forces the ball against the seats, which creates a seal. When the pipeline is under pressure, the trunnion ball valve is closed. All TVC TMBV address all of the safety, quality, and design issues important for ensuring consistent field performance and environmental protection. API 6D gives basic design, dimensions, and testing standards for the trunnion valve. ISO 5211 Topworks for Mounting Dimensions.
One seat seals the fluid from upstream, and the other seat seals the fluid from downstream. The API 6D standard also gives the standard weights of trunnion ball valves corresponding to different bore sizes and body dimensions. American Petroleum Institute (API) 6D design. Within a trunnion ball valve the ball connects to the stem on one end and on the other end a shaft called the trunnion.
When the ball is rotated 90-degree, the bore becomes perpendicular to the flow path, meaning the valve is closed, and fluid cannot pass. Pressure class: American National Standards Institute (ANSI) 150-2500. The Ball Valve provides tight seal, even after long periods, utilizing soft sealing components. Standard lengths: 48-, 60-, 72-, 84- and 96-inch (custom high-head lengths available upon request). Why Trunnion Ball Valve?
Size range: two to 12 inches. Sealant Injection upon request. 5 Steel Pipe Flanges and Flanged Fittings.