Crafted from durable copper material, this check valve offers excellent corrosion resistance and long-time durability. Its compact design makes it suitable for small air compressors and air pumps. The valve ensures smooth airflow and prevents leakage, making it an essential accessory for maintaining compressor performance. Features -Color:Golden -Material:Copper -Size:4.00X3.80X3.50cm/1.57X1.49X1.38in -Durable copper construction: made from durable copper material, this valve offers durability and resistance to wear, ensuring reliable performance over time -Maintenance-free design: the -free piston system requires no lubrication, saving time and effort while delivering clean air for sensitive applications -Direct drive: drive design optimizes energy usage, making it suitable for high efficiency tasks in various settings, including home and industrial use -Space-saving design: its compact size allows for easy storage and transport, making it a practical choice for professionals or tight work spaces -Low noise operation: designed with quiet technology, this valve reduces noise levels, providing a more comfortable working environment for users Package list: 8 compressor check valves