Product Name: API 6A Swing Check Valve
Execution Standard: API SPEC 6A
Nominal Sizes: 2-1/16 Inch (DN52), 2-9/16 Inch (DN65), 3-1/16 Inch (DN78), 4 Inch
Pressure Rating: 2000-15000 PSI
Product Specification Level (PSL): PSL1 to PSL4
Performance Level: PR1 to PR2
Material Class: AA to FF
Operating Temperature: -46°C to 121°C
This API 6A Swing Check Valve is designed and manufactured in full compliance with API Spec 6A standards for wellhead and Christmas tree equipment. As a result, it is fully interchangeable with products manufactured both domestically and internationally that meet API Spec 6A specifications, or it can be integrated into complete systems.
This valve is a type of check valve that relies on the pressure of the working medium to achieve metal-to-metal sealing between the core and the body (seat). The sealing performance improves with higher medium pressure, ensuring reliable operation under pipeline pressure within the valve cavity.
The valve body is forged from alloy steel, offering exceptional mechanical properties to withstand high pressures safely and reliably.
The bonnet and body of the valve are connected using blind bolts, with sealing washers employed to seal the bonnet and interior wall. This design minimizes the space between components (with a target of zero space), which significantly reduces erosion of the bolts and bolt holes caused by abrasive media. Additionally, this design decreases the load on the bolts.
The sealing surfaces of both the valve core and body are built-up welded with carbide alloy, providing excellent wear and corrosion resistance. The valve core is made from sulfur-resistant material, and other components are produced using hardness-limited technology, making this valve suitable for environments containing H2S.