SCS13 JIS 20K lift check valve flange spring check valve 
JIS 20K lift check valve is a flange connection, also known as flange spring check valve, mainly made of stainless steel SCS13 and SCS14. It is recommended to install vertically and use springs to reset the interior.
The 
JIS 20K flange lift check valve adopts the Japanese standard JIS 20K, and is composed of a valve plate, spring, guide valve, etc. inside, which can play a role in micro resistance and slow closing.
We also have JIS 10K lift check valves for you to purchase