The U440# joint is made of all brass, which is an important basis for its quality and durability. The specific advantages are its excellent pressure resistance. Brass has good mechanical strength and ductility, can withstand high hydraulic and gas pressure conditions, and is not easy to break or deform; excellent corrosion resistance, brass naturally has the ability to resist oxidation, water vapor and various chemical media (such as refrigerants, gas); resistant to high and low temperature fluctuations, brass can maintain stable performance in a variety of harsh environments, suitable for extremely cold or high temperature occasions; easy to process and seal, brass material is easier to process precisely, and with the standard sealing structure, it can achieve fast connection and good sealing effect. This makes the U440# SAE 45° flare brass fittings swivel nut connector highly adaptable and has service life advantages in the fields of industry, transportation, refrigeration, etc.

This joint adopts a seismic design and uses an extended nut to improve the connection stability. In many practical applications, the joint may be subjected to continuous mechanical vibration. The extended nut equipped with U440 can enhance the grip, improve the shear resistance and increase the connection life. It is particularly suitable for mobile application scenarios, such as heavy trucks, mobile cooling devices, field equipment and other high vibration occasions.

U440 connectors are manufactured strictly in accordance with SAE standards J512 and J513, which means the standardization of the connection structure. This product can be compatible with most SAE 45°cone systems on the market, which is easy to replace and maintain. It also ensures the consistency of interface size and sealing, which can reduce the leakage or connection failure caused by incompatible size. And this standardized design makes this product suitable for the global market. SAE standards are widely used in heavy manufacturing, HVAC, refrigeration and other industries in North America, Europe and the world. This product is also suitable for OEM and export needs. Customers do not need to worry about whether the product meets the technical standards, which improves purchasing confidence and supply chain efficiency.

U440 has been certified by UL (Underwriters Laboratory), which means that it has met strict standards in safety, material performance and product consistency, ensuring the safety and reliability of electrical and gas systems. UL certification pays special attention to sealing and structural strength in hazardous media environments. It has improved the market acceptance of products. The UL mark is an important mandatory or recommended certification in the North American market, and end customers have a high degree of trust in it. It promotes the bidding and technical evaluation of engineering projects. UL certification greatly simplifies the review process of enterprises in engineering projects. There are also continuous supervision and batch testing mechanisms. UL has a long-term tracking and supervision mechanism for certified products to ensure product consistency and long-term quality.

U440# SAE 45° cone brass swivel nut connector is widely used in various markets including refrigeration equipment, heavy trucks, mobile energy equipment, industrial systems, HVAC, etc. It is also suitable for various application scenarios including refrigerant delivery pipelines, liquefied petroleum gas (LPG) connections, diesel/gasoline and other fuel delivery systems, natural gas pipeline adapters, and connection interfaces in air conditioning and heating systems

The U440 series connectors not only embody excellent craftsmanship and quality, but also represent our company's commitment to the continuous pursuit of stability and safety in the field of connection technology.