API6D 900LB Swing Check Valve With BW Connection

Design Description

• High-Density Forged Alloy Construction: Forged body eliminates internal casting defects, providing maximum mechanical strength, uniform grain structure, and safety under high-pressure Class 900 service.

• Stellite Co-Cr Hardfaced Seating: Both the seat and disc sealing faces are overlaid with Stellite cobalt-based alloy, resisting wire-drawing, erosion, and wear caused by high-velocity media.

• Leak-Free Butt-Weld Integration: Eliminates flanged joints entirely, making it the ideal solution for buried, offshore, or high-integrity overhead pipelines subject to severe thermal cycling.

• Optimized Swing-Disc Dynamics: The hinge pin and disc design ensure minimal flow resistance when open and instantaneous closure upon flow reversal, reducing pressure drop and preventing water hammer.

API6D 900LB Swing Check Valve With BW Connection :

• Long-Distance Oil & Gas Transmission: Mainline compressor discharge and booster stations requiring dependable backflow protection. 

• Refinery High-Pressure Loops: Hydrocracker and high-pressure desulfurization units operating under severe pressure drops.

• Power Generation & Steam Networks: High-pressure boiler feedwater check isolation and steam turbine protection loops.