Top mounted design: The valve body is cast or forged as a whole, effectively ensuring the compactness of the pressure bearing parts. The sphere is installed from the upper end of the valve body, making it easy to disassemble and maintain online, reducing downtime and maintenance costs.
Valve cover extension design: Strictly control the gap between the valve stem and the extended neck, reduce cold flow upward, and prevent the increase of switch torque and valve stem scratches caused by packing icing. The design of the outer circular long neck annular lunar groove increases the cooling dissipation area and enhances the cooling dissipation effect.
Valve seat structure: Adopting an adjustable spring preloaded valve seat design, the valve seat is pushed towards the sphere under the action of spring and medium pressure, ensuring sealing performance under low temperature and low pressure. Some products use imported PCTFE and other materials for the valve seat sealing surface, which still has good elasticity under ultra-low temperature conditions, ensuring that the seal does not fail.
Valve stem sealing: A lip shaped sealing ring is used to form a primary seal, and then a compressed valve stem packing is used to form a secondary seal. Some products also adopt a self centering design for the pressure cover and pressure sleeve, effectively preventing imbalance caused by uneven force on the pressure cover.
Material: Stainless Steel, Alloy Steel
Nominal Size: NPS 1/2"~24", DN 15~600
Pressure Rate: Class 150~2500, PN 10~420
Temperature Range: -196°C~+150°C
Operator: Manual, Pneumatic, Electric, etc...
Application Range: LNG, LPG, LNG low temperature conditions and long-distance pipelines such as oil, gas, and natural gas.
RAYS cast steel check valves are designed and manufactured to provide maximum service life and dependability. All check valves meet the design requirements of American Petroleum Institute standard API600 & 6D.BS EN 13709 and generally conform to American Society of Mechanical Engineers standard ASME B16.34. Valves are available in a complete range of body/cover materials and trims.
Compared with other valve products, High Temperature and High Pressure Slab Gate Valve is characterized by high temperature and high pressure. Among them, grooved flange is designed as a unique self-tight-seal structure. The higher the pressure, the more reliable the sealing performance. Due to the characteristics of performance and technical characteristics and working conditions, the product has also formed the characteristics of other products that cannot be replaced. This type of valve should generally be installed horizontally in the pipeline. The high-temperature and high-pressure gate valve has the design characteristics of ordinary wedge-type gate valves. The valve body has a guide mechanism to prevent rotation when the gate is turned on or closed to ensure that the sealing surface of the valve seat is accurate accordingly. At the same time, the wedge valve does not rub with the valve seat before turning off, thereby reducing the wear of the cover and effectively extending the service life of the valve.
It is mainly used in various systems such as petroleum, chemical, metallurgical, pharmaceutical, etc. to transport high viscosity media that solidify at room temperature. The insulation jacket of BJ45W DC jacket insulation globe valve is welded between the two flanges of the valve, and there are two connection ports for the insulation jacket on the side and bottom of the valve. DC insulation globe valve is particularly suitable for pipelines in the chemical and fertilizer industries, and the inclusion of steam in the jacket can prevent the crystallization of the medium. Insulated globe valves are widely used in various systems such as petroleum, chemical, metallurgical, pharmaceutical, etc.