This is a contract for a parts kit for a size 2 1/2 inch ball valve, consisting of a ball and two seats, designated as SPECIAL EMPHASIS material for a crucial shipboard system where failure could result in serious injury or loss. The contract mandates a one-year warranty from the date of delivery and requires the contractor to have an acceptable Quality Assurance Manual, specifically ISO 9001 or an approved equivalent. Final delivery of material is required on or before a TBD number of days after the contract's effective date, with certification data due 20 days prior to that delivery. The performance location is not specified.