Swing Swing Check Valve - ZRK / ZRKF | AWS AWS Swing Check Valve - ZRK / ZRKF | AWS The Swing Check Valve - ZRK / ZRKF | AWS is a versatile valve designed for a wide range of applications, thanks to its construction from a diverse array of materials including carbon steel, stainless steel, SuperDuplex, Hastelloy, and other specialized alloys. It is suitable for use in HVAC systems, handling gaseous fluids, seawater, desalination... View