1. Material submittal for back flow preventer, isolation valve in the main valve box to be submitted separately with names of vendors/ manufacturers. 
2. Design drawing shall be stamped by SCEC and submitted to Aramco for approval. 
3. Gate valve for the solenoid shall be brass type. 
4. Identify and highlight on the submitted catalogue sheets the material type, size, model, and quantities for each item in the system for review and approval.