Axial No-slam check valve
API 6D No-slam check valve- Nozzle type-
24 inch. ASME 600, Raised face connections, automatic operated
For compressor protection in onshore production plant
API 6D No-slam check valve- forged design-
8 inch. ASME 2500, hub connections, automatic operated
In FPSO facilities for compressor protection
API 6D No-slam check valve-cast design-
14 inch. ASME 900, Ring joint connections, automatic operated
In FPSO facilities for compressors protection
API 6D No-slam check valve- forged design-
8 inch. ASME 2500, hub connections, automatic operated
In FPSO facilities for compressor protection
API 6D No-slam check valve- forged design-
8 inch. ASME 2500, hub connections, automatic operated
In FPSO facilities for compressor protection
API 6D No-slam check valve- Nozzle type-
48 inch. ASME 600, Raised face connections, automatic operated
In FPSO facilities for compressors protection
API 6D No-slam check valve
16 inch. ASME 900, Ring joint connections, automatic operated
In FPSO facilities for compressors protection
API 6D No-slam check valve-Compact design-
8 inch. ASME 2500, Hub connections, automatic operated
In FPSO facilities for compressors protection
API 6D No-slam check valve-Compact design-
8 inch. ASME 2500, Hub connections, automatic operated
In FPSO facilities for compressors protection
API 6D No-slam check valve-Compact design-
8 inch. ASME 2500, Hub connections, automatic operated
In FPSO facilities for compressors protection
NSC-NSZ-NFC-NFZ-SSC-SSZ-SFC-SFZ
based on API 6D and customer requirements
based on API 6A and customer requirements
NPS 2 - 56 (DN 50-1400)
NPS 1.13/16- 21.1/4 (DN 46-540)
RF, RTJ as per B16.5 &B16.47
BW, Butt Welded as per B16.25
Hub connection
6B, 6BX as per API6A
Cast one-piece / bolted two pieces for size >20 inch.
Forged bolted one-piece/ three-piece
Metal-seated with hard facing on disk and seat
Powerful spring for ultra-fast closing action
Venturi pattern design
Minor friction between moving parts to eliminate any chance of jamming
Spring assisted and short stroke
No chattering effects to minimize pressure fluctuation during normal conditions
Low pressure drop
High dynamic response and zero reverse flow
Nozzle design if the valve size>20 inch. for better flow regulation
Short pattern design compact face-to-face option for weight and space savings
automatic
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:
Different product specification levels (PSL 1, 2, 3, 3G and 4)
Different performance requirement levels (PR1, PR2)
Design validation as per PR2F
Velan ABV’s API 6D No-slam check valves are silent in-line and specifically designed to automatically protect critical components from reverse flow as well as pressure transients. Fast and prompt closing is assured due to the powerful spring and short valve stroke. As forward velocity begins to slow, the spring assist starts to close the disc. By the time it reaches zero, the valve disc is closed against the seat before reverse flow can occur, preventing a peak of pressure in the line and water hammer phenomena.
In addition, Velan ABV offers a compact version of No-slam check valves, providing the same reliability and quality of the traditional No-slam valves, but with significant space and weight savings.