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.
The cryogenic butterfly body can be provided in twostructural forms, namely flange connection and butt.welding connection (both with inspection ports). The body with inspection ports can replace the valveinternals online, making maintenance work extremelysimple, which is conducive to the rational use ofresourcesand saving maintenance costs.The extended valve cover + drip tray design ensures thatthe temperature at the stuffing box is above zero degrees!so that the connection between the stuffing and the stemwill not freeze and lock.
RAYS Three-Way and Multi-Port Ball Valve are important components in fluid control systems and are widely used in various industrial fields. They are variants of ball valves. Their design allows fluids to be distributed or converted between more than two pipes. The three-way ball valve has three interfaces, which can realize the diversion, confluence or switching of fluids. According to the different internal structures, it is divided into L-type and T-type. The L-type can only connect two mutually orthogonal pipes, and cannot simultaneously maintain the interconnection of the third pipe, and only plays a distribution role; the T-type can make three orthogonal pipes interconnected and cut off the third channel, playing a diversion and confluence role. The multi-way ball valve is an extension of the three-way ball valve, with more interfaces and more complex fluid control functions.
The Throttle Stop Valve is mainly composed of valve body, valve cover, valve flap, and valve stem. The handwheel applies a certain torque at the upper end of the valve stem. The valve stem is passed to the valve petals to move it up and down along the valve stem axis to realize the full-opening, full-closed movements and regulating traffic functions. The force applied by the hand wheel can be obsessed with the valve seat to reach the sealing state; Location, change the cross-sectional area between the valve petals and the cover of the valve seat, and achieve the purpose of regulating media flow. At the same time, the throttle stop valve does not rub with the valve seat before turning off, thereby reducing the wear of the cover and effectively extending the life of the valve.