Specification - Watts Fluid Air

Catalog MRO-6WAPart Numbers & DimensionsPrestomatic † Retaining RingBulkhead UnionsPrestomatic † retaining ring bulkhead unions feature a uniquedesign that provides the user with an economical method toinstall and assemble a union connection through a bulkhead.The retaining ring bulkhead unions feature a smallerenvelope size than standard bulkhead union connectors anddo not require a wrench to mount or assemble in crampedareas.The external seal feature provides a moisture barrier and canalso prevent external contamination from entering into anenclosed area.To install, simply support the bulkhead union from behindand apply the external seal. Then push the external retaineragainst the external seal with an assembly tool and you havea reliable bulkhead connection in a confined area.Fittings & TubingPrestomatic †External Seal(Optional)Assembly ToolExternalRetainerBulkheadSupport62PMTBHR62pmtbhr Retaining Ring BulkheadES* External SealLPMax.I.D.ADia.O.D.WPartNo.TubeSize O.D.Rec.HoleSizePMax. LADia.62PMTBHR-4 1/4 0.500 0.512 0.26 1.53 0.62562PMTBHR-6 3/8 0.750 0.762 0.36 1.92 0.87562PMTBHR-8 1/2 0.875 0.887 0.43 2.15 1.00062PMTBHR-10 5/8 1.000 1.012 0.62 2.54 1.250PartNo.TubeSizeBulkheadUnion O.D.ADia.WES-50 1/4 0.500 0.489 0.07ES-75 3/8 0.750 0.739 0.07ES-87 1/2 0.875 0.864 0.07*Material is Nitrite (Buna N), 70 DurometerERHD* External Retainer62PM UnionHADia.O.D.LWPartNo.TubeSizeBulkheadUnion O.D.ADia.ERHD-50 1/4 0.500 0.83 0.05ERHD-75 3/8 0.750 1.08 0.05ERHD-87 1/2 0.875 1.20 0.05ERHD-100 5/8 1.000 1.33 0.05*Material Carbon Spring SteelWPartNo.TubeSize L O.D.62PM-2 1/8 1.60 0.40662PM-5/32 5/32 1.60 0.40662PM-3 3/16 1.35 0.440*Material is Nitrite (Buna N), 70 Durometer†U.S. Patent No. 5,683,120H4Pneumatic DivisionRichland, Michiganwww.wattsfluidair.com