Home ProductsCHECK VALVE
Dual-disc check valves are bonnetless and mounted between pipe flanges (wafer style). The valve includes two spring loaded half-moon shaped discs that rotate about their shaft. It can be installed on horizontal and vertical pipelines. FYV’s wafer check valves are designed to provide long service life and responds quickly to flow stoppage or reversal.
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Check Valve, also known as a Non-return Valve. This is an automatic valve when it is automatically opened or closed by the force generated by the medium flowing within the pipeline. Its major function is to prevent the backflow of the medium in the pipeline, reverse rotation of the pump and its driving motor, and discharge of the medium in the container.
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FYV’s high pressure seal check valve is suggested for better closure in high pressure condition, while bolted bonnet is still available for customer's option. The pressure seal design incorporates a metal-to-metal seal that becomes tighter as the pressure increases. The pressure seal valves are widely used in fossil fuel power plant. Compared with bolted bonnet valves, it provides absolute reliable sealing of the bonnet joint, so that the pressure seal valves are more compact and rigid as well as maintenance cost-effective at high temperature and high pressure service.
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Lift check valves are also called piston check valves. They are essentially globe valves without the stem and top works, allowing the disc to respond to flow rates and direction. The disc has linear movement and is typically body-guided with conical seating surfaces. Springs can be added above the disc to provide more closure force when the disc returns to its closed position.
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FYV’s high pressure seal check valve is suggested for better closure in high pressure condition, while bolted bonnet is still available for customer's option. The pressure seal design incorporates a metal-to-metal seal that becomes tighter as the pressure increases. The pressure seal valves are widely used in fossil fuel power plant. Compared with bolted bonnet valves, it provides absolute reliable sealing of the bonnet joint, so that the pressure seal valves are more compact and rigid as well as maintenance cost-effective at high temperature and high pressure service.
Read More +
FYV’s high pressure seal check valve is suggested for better closure in high pressure condition, while bolted bonnet is still available for customer's option. The pressure seal design incorporates a metal-to-metal seal that becomes tighter as the pressure increases. The pressure seal valves are widely used in fossil fuel power plant. Compared with bolted bonnet valves, it provides absolute reliable sealing of the bonnet joint, so that the pressure seal valves are more compact and rigid as well as maintenance cost-effective at high temperature and high pressure service.
Read More +