The low-temperature and high-pressure welding needle valve adopts a fully welded valve body structure to eliminate the risk of external leakage
○ Work pressure: Maximum 6000PSI (413bar)
○ Working temperature: -196 ° C (-320 ° F) to 30 ° C (86 ° F)
○ Applicable media: LNG, LO2, LN2, LAr, CO2
○ Caliber: 3mm-28mm (1/8 "-1")
○ Port type: Loop welding (BW butt welding, SW socket welding, UBM loop welding, threading, etc.)
○ Material: 304, 316, 316L, 321, Hastelloy, Monel alloy
○ Integrated body forging, valve stem transmission threaded alloy structure;
○ The valve seat and valve core are welded with STL nickel based alloy, and the valve core has a reverse seal;
○ Top mounted design of valve stem packing,
○ All valves have undergone pressure testing;
○ All valves have been cleaned and meet the requirements of G-4.1 of the American Compressed ○ Gas Association, and can be used for liquid oxygen equipment;
○ The maximum working pressure is 69MPa, and the temperature ranges from -196℃ to 30℃
The low-temperature and high-pressure welding needle valve is designed for extreme working conditions and is suitable for ultra-low temperature medium systems such as liquid nitrogen, liquid oxygen, LNG, etc. It adopts a fully welded valve body structure to eliminate the risk of leakage; The valve core is a precision conical needle type, achieving precise adjustment and reliable cutoff of micro flow rate; The main material is mostly low-temperature carbon steel (LCB) or austenitic stainless steel (304L/316L), which can operate stably for a long time under conditions ranging from -196 ℃ to room temperature and pressures up to PN100 or even PN250. It is widely used in the fields of air separation, energy, and chemical engineering.
The high-temperature and high-pressure socket welding needle valve is made of integral forged heat-resistant alloy steel or stainless steel
Welding high-pressure needle valves for power plants are designed specifically for thermal power generation, nuclear power, and supercritical units
Used for high temperature, high pressure or extremely dangerous medium systems to eliminate the risk of leakage. The 90 ° angle flow channel design is easy to install and drain, and the precision conical needle valve core is equipped with a hard alloy seal to achieve precise adjustment of micro flow and zero leakage shut-off.