Temperature:-46ºC up to 425ºC Sizes 2" - 24" Rating ASME 150LB - 2500LB Axial Flow Check Valves
Temperature:-46ºC up to 425ºC Sizes 2" - 24" Rating ASME 150LB - 2500LB Axial Flow Check Valves
Axial Flow Check Valves
Sizes 2" - 24"
Rating ASME 150LB - 2500LB or API 3000 - 15 000
Higher pressure ratings on request
Temperature:-46ºC up to 425ºC
Standards:API 6D, ASME B.16.34, ASME B.16.5, ASME B.16.25
Dual-plate check valve
Piston check valve
Rating ASME 150LB - 2500LB or API 3000 - 15 000
Higher pressure ratings on request
Temperature:-46ºC up to 425ºC
Standards:API 6D, ASME B.16.34, ASME B.16.5, ASME B.16.25
Dual-plate check valve
Piston check valve
Quantity
Axial Flow Check Valve Manufacturer
SJ API 6D axial flow 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 axial flow check valve manufacturer When it 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, S J offers a compact version of axial check valve, providing the same reliability and quality of the traditional axial flow check valve, but with significant space and weight savings.
1:Body design
The one-piece body casting is designed with an internal Venturi pattern for quickest transient response.
2:Seat sealing
The seat offers metal-to-metal contact with standard 150 microns of CoCr alloy hardfacing, to prevent potential erosive effects caused by aggressive flows. Leakage rate complies with API 6D
3:Light-weight disc
The disc design is optimized to minimize inertia which improves the dynamic response of the valve. Available in a variety of trim materials to handle various types of corrosive and erosive fluids.
4:Spring
The spring is designed for ultra-fast closing without backflow and pressure surges in critical applications such as multi-pump systems. Customized springs are provided as a standard to perform under the most critical conditions
5:Stem
A spherical connection between the stem and the disc ensures a perfect contact match with the seat
6:Stem sleeve
The sleeve is provided to support the stem and limit frictio
7:Spring threaded ring push
The ring allows the spring preload to adjust for an optimal combination between flow conditions and sealing performance
Features
● Compact face-to-face option for weight and space savings
● Spring assisted and short stroke solution to handle dynamic response and zero reverse flow
● Internal Venturi pattern design to maximize the spring effect and minimize hydraulic losses
● Minor friction between moving parts to eliminate any chance of jamming
● Materials selection is fully customizable
● Metal-to-metal contact between seat and plug for tight shut-off performance and a long service life
● Low emissions rate in accordance API 6D
● Fire safe design and fire tested as per API 6FA/607
● Negligible pressure drop under normal conditions, less than 0.05 bar
● Low cracking pressure for high performance even at compressor start-up
● No chattering effect to minimize pressure fluctuation during normal conditions
Expertly engineered by SJ for high-pressure industrial pipelines, axial flow check valve is a premium non-slam check valve designed to deliver ultimate backflow prevention. Featuring a heavy-duty carbon steel body with an optimized streamline flow path, it effectively eliminates devastating water hammer, ensures rapid and silent closure, and minimizes pressure drop across oil, gas, and water transmission networks.
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