Swing check valve



Valve design

based on API 6D and customer requirements
based on API 6A and customer requirements

Temperature range
-150 to 428°F (-101 to 220°C)

NPS 1.13/16- 21.1/4 (DN 46-540)
NPS 2 - 36 (DN 50-900)

Pressure rating

ASME 150 - ASME 2500
API 5000-API 15000

As per API 6D standard or as Velan standard
End connections

RF, RTJ as per B16.5 &B16.47
BW, Butt Welded as per B16.25
Hub connection
6B, 6BX as per API6A

Body design

forged or cast one-piece

Seat design

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


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



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

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.