Home  |  About Us  |  Contact Us  |  Products Catalogue  |  Safety  |  News  |  Demos & Photos

PSI Unions are colour coded. This colour coding system is to help guide in the correct usage of each different union. Please do not use just the colour system; double check the stamping on each union. Union colour coding system as per IRP4. All unions are clearly marked with union thread types. PSI is not responsible for any misconnected unions.