CHK series swing check valves

Features & Benefits

Swing check valves are a trusted choice for general-purpose use in both upstream and midstream applications, available in both forged or cast materials, and the design ensures total reliability for high pressure and high temperature services. The swinging action of the disc away from the seat allows forward flow and when the flow is stopped, the disc returns to the seat, preventing backflow. Swing check valves are suitable for installations in lines where pigging operations are required for various maintenance services. The piggable design makes the swing check valve ideal for installation in riser pipelines and subsea applications.Convenience of operation and simple in-line maintenance are essential features of our design. Internal parts can be inspected and repaired without removing the valve off the pipeline even where space is restricted as in the top entry trunnion ball valve construction.The valve can be installed in both vertical and horizontal positions and offers unsurpassed quality and reliability– while the simple design minimizes maintenance costs.

Material selection is fully customizable to meet customers project specifications.

Seat design

• Metal-seated with hard facing on Disk and Seat
• Welded-in-seat ring

Features

• Easy in-line maintenance as in Top entry ball valve construction
• Suitable for horizontal and vertical (flow-up) installation
• Suited for low velocity service
• Fully piggable design
• Secondary seals in pure Graphite
• De-clutchable device for lock opening during pipeline cleaning

Operator

• automatic

Testing & certifications

• Compliance with API 6D & ISO 5208 & API 598 inspection and testing
• Compliance with API 6A inspection and testing
• Fire safe and fire tested as per API 6FA/ 607
• PED 2014/68/UE
• Available as per API 6A standard:
• Product specification levels PSL 1, 2, 3, 3G, and 4
• Performance requirement levels PR1, PR2
• Design validation as per PR2F