API 6D Class 600 Large Bore WCB Flanged High Pressure Ball Valve

Product Overview

The API 6D Class 600 Large Bore WCB Flanged High Pressure Ball Valve is a professional pipeline-level high-pressure ball valve strictly manufactured in accordance with API 6D pipeline valve standards and ASME international specifications. Designed for large-diameter pipeline transmission scenarios, this Class 600 high-pressure ball valve adopts premium ASTM A216 WCB cast carbon steel body and standard ANSI flanged connection, equipped with heavy-duty trunnion mounted positioning structure, solving the problems of large medium torque and unstable operation of traditional large-bore valves.

Different from small-diameter floating ball valves, this large bore ball valve features a full bore through design with zero flow resistance in fully open state, ensuring unobstructed pipeline pigging and smooth medium transmission. The thickened integral cast steel structure perfectly adapts to Class 600 high-pressure working conditions, with excellent pressure resistance, high-temperature stability and anti-scouring performance. Compliant with API 6D full-life pipeline safety standards, it is widely used in long-distance oil and gas transmission main pipelines, petrochemical gathering and transportation pipelines and large-scale industrial high-pressure fluid systems, serving as core safety cut-off and control equipment for heavy-duty pipeline projects.

Key Features & Advantages

1. Authentic API 6D Pipeline Grade Standard

Strictly designed, manufactured and tested per API 6D pipeline valve specifications, synchronized with ASME B16.34, ASME B16.5, ASME B16.10 and API 598 international standards. As a professional pipeline dedicated valve, it meets long-distance pipeline anti-fatigue, anti-pressure surge and full-cycle safety operation requirements, fully compliant with global oil and gas pipeline project acceptance standards.

2. Class 600 High Pressure Bearing Capacity

Optimized for Class 600 (PN100) industrial ultra-high pressure working conditions, the valve adopts thickened integral casting and reinforced pressure-bearing structure. It stably resists long-term high-pressure medium impact and cyclic load operation, effectively avoiding valve body deformation, sealing failure and pipeline leakage risks, ensuring long-term stable and safe operation of large-diameter high-pressure pipelines.

3. Premium WCB Cast Steel Body

Adopts ASTM A216 WCB high-quality cast carbon steel, a dedicated material for high-pressure pipeline valves. It features excellent high-temperature mechanical stability, strong medium scouring resistance and structural toughness, with a working temperature range of -29℃ to 425℃. The integral casting process eliminates pores and trachoma defects, adapting to long-term continuous operation of heavy-duty pipelines.

4. Large Bore Full Flow Design

Customized for large-diameter pipeline systems, the full bore through structure ensures consistent inner diameter with the pipeline. It realizes zero flow resistance in fully open state, supports pipeline pigging cleaning, reduces transmission pressure loss and improves overall pipeline transmission efficiency, perfectly matching large-scale pipeline main transmission working conditions.

5. Trunnion Mounted Stable Structure

Adopts heavy-duty trunnion mounted fixed ball design, which effectively shares medium pressure load, reduces operating torque, and avoids ball deviation and sealing failure caused by medium pressure. The structure is stable and durable, solving the operating difficulties of traditional large-bore ball valves under high pressure, with low failure rate and long service life.

6. Standard ANSI Flange & Zero Leakage Performance

Equipped with ANSI B16.5 standard RFRTJ optional flange, with precise sealing surface processing and unified international installation dimensions for quick assembly and maintenance. The valve seat adopts elastic sealing or hard sealing configuration, with optional Stellite alloy overlay. All products pass API 598 strict tests to achieve bidirectional bubble-tight zero leakage.

Technical Specifications

Applications

•Long-Distance Oil & Gas Pipeline: Large-diameter main transmission pipelines, oil and gas gathering and transportation trunk lines, pipeline station safety isolation systems

•Petrochemical & Refinery: Large-scale refinery process pipelines, high-pressure fluid delivery systems, chemical plant main pipeline cut-off equipment

•Energy & Power Industry: Thermal power plant large-diameter water and steam pipelines, energy station high-pressure transmission systems

•Industrial Heavy-Duty Pipeline Projects: Large-bore industrial fluid transmission pipelines, high-pressure pipeline safety control and switching systems

•Urban Energy Pipeline Network: Municipal large-diameter gas transmission and water supply high-pressure pipeline isolation and protection equipment

Why Choose Our API 6D Class 600 Large Bore Ball Valve?

✅ Professional API 6D Pipeline Grade — Pipeline-level dedicated valve, compliant with international long-distance pipeline safety standards, suitable for high-standard energy engineering projects.

✅ Class 600 High Pressure Resistance — Thick-wall WCB cast steel body, reinforced pressure-bearing structure, stable operation under long-term high-pressure harsh working conditions.

✅ Large Bore Full Flow Advantage — Full bore through design, zero flow resistance, support pipeline pigging, reduce system energy consumption and improve transmission efficiency.

✅ Trunnion Stable Operation — Fixed ball structure reduces operating torque, solves large-bore valve jamming and deviation problems, durable for long-cycle operation.

✅ API 598 Zero Leakage — Precision sealing matching, bidirectional tight shutoff, effectively guarantee long-distance pipeline operation safety and reduce medium loss.

Order & Certification Information

MOQ: 1 Unit

Lead Time: 25-40 working days for standard large bore sizes

Certificates: EN10204 3.1 Material Certificate, API 598 Test Report, ISO 9001 Quality Certificate

Packing: Anti-rust treatment + Reinforced heavy-duty export wooden case

Warranty: 18-month quality warranty and lifelong technical support

Contact Us for customized large bore sizes, sealing forms and bulk quotation of API 6D Class 600 WCB flanged high pressure ball valves.

What Is an API Large Bore Flanged Ball Valve

An API Large Bore Flanged Ball Valve is a quarter turn isolation valve designed for high flow capacity applications in industrial pipeline systems. It features a spherical ball with a large internal passage that allows efficient fluid transfer with minimal restriction. Flanged end connections provide secure installation and convenient maintenance. Manufactured according to API requirements, the valve offers reliable sealing and structural strength, making it suitable for oil and gas, petrochemical, power generation, and water treatment services.

Why the API Large Bore Flanged Ball Valve Matters

This valve is important because it provides dependable shutoff and maintains efficient flow in large diameter pipelines. The large bore design minimizes pressure loss and supports smooth media transportation. API compliant construction ensures reliable performance and consistent quality under demanding operating conditions. Flanged connections simplify installation and inspection, while the robust structure helps protect process equipment and maintain stable operation in critical industrial systems.

Common Product Types by API Large Bore Flanged Ball Valve

Common product types include floating ball valves, trunnion mounted ball valves, top entry ball valves, and side entry ball valves. Full port configurations are widely used to maximize flow efficiency, while reduced port designs are selected for specific space or process requirements. Manual, electric, pneumatic, and gear operated versions are available. Different seat materials and body constructions can be chosen to suit corrosive, high temperature, or severe service conditions.

Key Advantages of API Large Bore Flanged Ball Valve

The valve offers excellent sealing performance, low pressure loss, and fast quarter turn operation. The large bore flow passage improves system efficiency and reduces turbulence. Flanged ends provide strong and reliable pipeline connections while simplifying maintenance. API compliant construction ensures long service life and dependable operation. With suitable materials and actuators, the valve can perform effectively in demanding industrial environments involving high pressure and corrosive media.

API Large Bore Flanged Ball Valve Machine Structure and Core Stations

Manufacturing begins with forging or casting the body, ball, stem, and flange components from selected materials. Core stations include heat treatment, CNC machining of the ball surface, seat pockets, flange faces, and stem connections. Assembly stations install the ball, seats, seals, stem, and operating mechanism. Final operations include pressure testing, torque verification, surface treatment, marking, cleaning, and packaging to ensure dimensional accuracy and reliable sealing performance.