Features: The single way valves design ensuring that the airflows passes through in single direction, avoiding backflow problems and improving systems safety. Suitable for pipeline systems that require prevention of reverse pressure, such as air conditioning or water treatments equipment, to ensuring long term stable operate of the equipment. Brass combined with plastic provides excellent corrosions resistance and wear resistance, extending the product's service life. Suitable for use in humid or chemical environments. The threaded straight through structure design allows for easy installation without the need for complex tools. Precisions manufacturing processes ensuring tight connection between joints, eliminate potential air leaks, and improve overall systems performances. Specifications: Component: Brass and Plastic Type: 4 Unidirectional SPV/6 Unidirectional SPU/6 Unidirectional SPV/8 Unidirectional SPU/8 Unidirectional SPV/10 Unidirectional SPU/10 Unidirectional SPV/12 Unidirectional SPU/12 Unidirectional SPV Size: As Shown in the Picture voltages resistance: 1.0Mpa Opening pressure: 0.1Mpa Pressure ranges: 0-10.2kgf/cm² Package Includes: 1pc Gas Pipe Quick Connector note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.