Valve was returned for evaluation: device history record (dhr) - the product code 82-5464 with lot 4434214, conformed to the specifications when released to stock.Failure analysis - the valve is a precision valve with 4 dots.The valve was visually inspected: a cut/tear was noted in the silicone housing around the siphon guard, also marks were noted on the siphon guard.The valve was hydrated.The valve was leak tested and no leaks noted.The valve passed the test for occlusion, reflux, siphon guard and pressure.The possible root cause for the issue reported by the customer, could be due to the cut/tear in the silicone housing.The root cause for the cut/tear and marks in the silicone housing and siphon guard, is probably due to a sharp or pointed object coming into contact with the silicone housing and siphon guard, as noted in the ifu silicone has a low tear/cut resistance.
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