Features High quality stainless steel material for superior performance, rust resistance, and excellent airtightness. Accurate BSPP female thread ensures easy and secure connection without slipping. Hex female thread design allows for effortless installation and removal, suitable for water connections. Available in 4 styles -- 1/8in, 1/4in, 3/8in, and 1/2in, providing options to meet your specific needs. Suitable for connecting pipes under various media such as gas, water, and oil, making it versatile and reliable. Features:1. High quality stainless steel material, stable performance, not easy to rust and good airtightness2. Accuracy BSPP female thread, easy to connect without slipping3. This is hex female thread air check valve which is easy to install and remove, can be used for water connection4. Available in 4 styles for choice: 1/8in, 1/4in, 3/8in, 1/2in5. Suitable for connection of pipes under gas, water, oil and other media Specification:Condition: 100% Brand newMaterial: 304 Stainless steelThread: BSPP female threadOptional Style: 1/8in, 1/4in, 3/8in, 1/2in Package List:1 x Air Check Valve Package List