Prevent backflow: Ensure one-way flow of the medium to avoid backflow.
Reduce noise: Reduce the impact sound and water hammer effect during valve opening and closing through special design.
Automatic operation: relying on the pressure of the medium to automatically open and close, without the need for external control.
Compact structure: easy to install and takes up minimal space.
Material: Carbon Steel, Stainless Steel, Alloy Steel
Nominal Size: DN15～DN400，NPS2~NPS16
Pressure Rate: PN16～PN420，Class150~ Class 2500
Temperature Range: -29℃～538℃
Operator: /
Application range:Water, oil、gas
◎ Design Standard: GB/T12235,API594
◎ Pressure Temperature Rate:GB/T12224,ASME B16.34
◎ Face to Face: GB/T12221,ASME B16.10
◎ Flange Standard: GB/T9113,ASME B16.5
◎ Butt Weld Standard: GB/T12224,ASME B16.25
◎ Fire Safe: API607
◎ Pressure Test: GB/T13927,API598
When the disc of the lift check valve slides along the vertical center line of the valve body and the medium flows forward, the disc is lifted by the fluid thrust and the medium passes smoothly; When the medium stops flowing or reverse flowing, the valve disc quickly closes under the action of its own gravity and the reverse thrust of the fluid to prevent the medium from flowing back. This valve is usually equipped with a guide sleeve to ensure that the disc remains smooth during lifting and accurately falls back onto the seat.
The valve disc of the Cryogenic Swing Check Valve adopts a cantilevered swing structure, combined with precisely machined valve seat sealing surfaces, to achieve rapid response and reliable sealing, effectively preventing the reverse flow of the medium. The overall design of the valve complies with international standards such as BS 6364 and ISO 28921, and is suitable for low-temperature conditions in air separation plants, liquefied natural gas storage and transportation, and the chemical industry.
RAYS' rising stem ball valve is designed to operate without friction between the ball and the seat during opening and to achieve zero leakage when closed. This makes it well-suited for demanding conditions. The valve is made entirely of metal and is fire-resistant, capable of functioning in extreme temperatures ranging from -196°C (320.8°F) to 538°C (1000.4°F). It can handle media with particulates like sand and short fibers, and meets NACE standards for corrosion resistance, ensuring it can resist sulfide stress cracking in harsh environments. The valve also features a self-cleaning mechanism. When the ball is tilted away from the seat, the fluid flows 360° around the ball's sealing surface, effectively removing any debris. This prevents damage from high-speed fluid flows and keeps the sealing area clean. The rising stem ball valve is ideal for various applications including exhaust, fluid transfer, pipeline isolation, bypass, product segmentation, and emergency shutdowns, particularly where high switching frequencies and zero leakage in high temperatures are required.