Product name: Check valve - Type: Vertical -: DN15 Made of high quality brass, durable, durable and long-lasting The automatic in-line check valve is made of brass and stainless steel with surface precision treatment, good corrosion resistance and high pressure This type of valve is good for preventing liquid leakage, should be installed horizontally when installing, so that the medium can only flow in a single steer to to avoid accidents< /span> Female to female check valve. Suitable for water and central heating installations. Properties: Made of high quality brass, strong and durable for long-term use. Good corrosion and oxidation resistance. Good sealing ability prevents liquid leakage. Mainly used in petroleum, chemical, pharmaceutical, fertilizer and power lines. Instructions: The check valve should be installed on the horizontal pipe. The vertical check valve should be installed on the vertical pipe and the medium flow from bottom to top. The installation position of the check valve is not limited, it is usually installed on the horizontal pipe, and can also be installed on the vertical pipe and further the inclined pipe. During installation, please ensure that the flow direction of the medium corresponds to the arrow on the valve body. Properties: Color: Gold. Material: brass. Type: vertical. Thread size: 20mm Flow direction: bidirectional. Operating temperature: -10120.