Included: 4pcs 1/2" (12mm) one way inline check valve
Material: Plastic water stops check valve are made of plastic
Size: 1/2" barb, can fit 1/2" hose ID pipe connections, normal performance under -30 ℃ to 150 ℃
One-Way Flow Control: Ensuring efficient and reliable, smooth, one-way flow prevention, preventing backflow and maintaining system integrity
Applications: These valves are versatile for use with fuel, gas, liquid, and air systems, perfect for a wide range of industrial, automotive, and DIY projects