This is a procurement for a 1/4 inch check valve cartridge assembly, designated as SPECIAL EMPHASIS (Level I) material for a crucial shipboard system where failure could result in serious injury, loss of life, or loss of the ship. The contractor must deliver certification data 20 days prior to final delivery, with final delivery of material required within 225 days. The performance of services requires a quality system in accordance with ISO-9001 (or MIL-I-45208 as an alternate) and mandates extensive material traceability, testing certifications, and specific procedures for welding, oxygen cleaning, and configuration control. A one-year warranty applies from the date of delivery.