The gate valve has a small fluid resistance, and the internal medium channel of the valve body is directly connected. The medium does not change
its flow direction when flowing through the gate valve. The torque required for opening and closing is small, the body structure is simple, the
manufacturing process is better, the sealing performance is good, and the corrosion of the dense cover when the full opening is less. The scope of
applications is wide. Because the phenomenon of the long water hammer is not easy to occur. The medium can flow in any direction on both sides
and easy to install.
Application Scenario: The non-rising stem gate valve is generally used in strict requirements on the height of the valve, but the use conditions are more harsh. For example, a high -temperature and high pressure working medium, toxic and harmful risk liquids require closure to ensure long-term
sealing and leakage. Under normal circumstances, the requirements for use requirements are reliable. Such as the application of power industry, petroleum
refining, petrochemical industry, marine oil, tap water engineering in urban construction, chemical industry and other fields.
◎ Design Standard: API600, API 603, ASME B16.34
◎ Main Material: Carbon steel, Stainless Steel, Alloy Steel, Etc.
◎ Size Range: NPS2~NPS24/DN50~DN600
◎ Pressure Level: Class600~ Class 2500/PN100~PN420
◎ Temperature Range: -29℃~540℃
The Cryogenic Single-seat Control Valve is specially designed for low-temperature working conditions ranging from -196℃ to +80℃. It features an integral forged valve body structure and is equipped with a bellows seal assembly to ensure reliable sealing under extreme temperature conditions. The valve core is designed with a parabolic or equal percentage flow characteristic, forming a precise fit with the hardened alloy valve seat to achieve precise control of the medium flow. The product complies with IEC 60534-4 and GB/T 4213 standards, and is suitable for precise regulation of low-temperature media such as LNG, liquid oxygen, and liquid nitrogen. The pressure rating covers ANSI Class 150 to 900, and is widely used in key areas such as air separation equipment and low-temperature storage and transportation systems.
Designed specifically for deep cold medium working conditions such as LNG, liquid nitrogen, and liquid oxygen, it adopts special stainless steel or low-temperature alloy valve bodies. Through deep cold treatment, it ensures reliable sealing even in an extreme environment of -196℃. The innovative lateral maintenance port structure allows for quick replacement of the sealing components without disassembling the valve, significantly improving maintenance efficiency. The optimized double eccentric butterfly plate, combined with multi-level metal hard seals, achieves zero leakage and long service life under ultra-low temperature conditions. At the same time, it is equipped with a longened valve stem heat insulation structure, effectively blocking the conduction of cold energy.
The Concentric butterfly valve is an industrial valve used for the on-off and flow control of pipeline systems. It is widely applied in fields such as petroleum, chemical industry, metallurgy, and hydropower. Its core structural feature is that the axis of the valve stem, the center of the butterfly plate, and the center of the body are on the same axis, featuring simple manufacturing and balanced opening and closing torque. By selecting different materials for the valve plate, valve stem, and sealing seat, it can be adapted to various different working environments, such as desulfurization, vacuum, and seawater desalination systems.