This is a legacy product. Please contact us for the latest version.sales@ocaire.com, SILENCER, VALVE, VV5Q* NO SIZE RATING, .00352 lb, ModelManifold pitch (mm)Flow-rate characteristicsApplicable cylinder bore size Metal sealRubber seal C [dm3/(s?bar)]C [dm3/(s?bar)]VQ2000162.63.2Up to ?80