● Excellent fire and flame retardant performance: The valve is made of high-quality stainless steel, brass or Monel alloy and other materials, with good flame retardant and electrical conductivity.
● Oil-free design and cleaning requirements: All components are strictly degreased during the manufacturing process to ensure that there is no oil, the surface is smooth and no burrs, and the high cleaning standards for oxygen delivery are met.
● Compact structure, safe and reliable: the valve has compact design, fast heat transfer, easy operation, excellent sealing performance and long service life.
● Low torque operation: Valve with low torque design, flexible operation, reduce mechanical friction, reduce the risk of ignition.
● Fire safety Certification: compliant with API 607 and API 6FA fire safety standards.
Material: Carbon Steel, Stainless Steel, Alloy Steel
Nominal Size: DN10～DN400
Pressure Rate: ≤21MPa
Temperature Range: -29～200℃
Operator: Manual, Pneumatic,Electric, etc...
Application range: Oxygen with a dew point not exceeding -30 ℃ and a purity (volume fraction) greater than 23.5%
◎ Design Standard: GB/T12235,GB 50030-2013,JB/T12955
◎ Pressure Temperature Rate:GB/T12224
◎ Face to Face: GB/T12221
◎ Flange Standard: GB/T9113
◎ Butt Weld Standard: GB/T12224
◎ Fire Safe: API 607,API 6FA
◎ Pressure Test: GB/T26480
The dual plate check valve features two semicircular, spring-loaded valve discs mounted on a central vertical pivot. When the valve opens, the force of the fluid and the spring act at the center of the disc, causing it to open from the base first. This design minimizes wear on the seal during opening, enhancing its durability. As the flow decreases, the discs slowly move back towards the seat due to the spring's force, ensuring a gradual closure. During backflow, the increased force on the discs leads to a faster closure, effectively reducing the risk of water hammer and hydraulic shocks. The spring’s force closes the top end of the disc first, preventing damage at the disc's base and prolonging the seal's lifespan.
The quality of forged steel parts is higher than that of cast steel parts, and they can withstand large impact forces. Their plasticity, toughness, and other mechanical properties are higher than those of cast steel parts. The diameter of forged steel stop valves is generally not more than DN80, and most of them are reduced-diameter designs. Compared with cast steel stop valves of the same diameter, the flow rate is slightly lower, but the pressure and temperature range they can withstand are higher than those of cast steel valves, and their sealing performance is much better than that of cast steel stop valves, and their service life is longer. Like other stop valves, they are subject to the restrictions of the flow direction of the medium. Forged steel stop valves can be divided into straight-through stop valves (type stop valves) and direct-flow stop valves (Y-type stop valves) according to installation positions.
There are two main types of forged steel check valves: forged steel swing check valves and forged steel lift check valves. The quality of forged steel parts is higher than that of cast steel parts, and they can withstand large impact forces. Their plasticity, toughness, and other