Masoneilan - 39003 Series Spec Data

Standard Valve Components1.KEYSquare key valve-to-operator connectionprovides an externally controlled failurepoint upon over-torquing.2.SHAFTSolid blow out proof shaft providesalignment and rigid support for disc.3.5.7.9.GLAND FLANGEApplies load against packing gland to preventexternal leakage. Fully adjustable.PACKINGCommon materials are TFE for up to 450˚Fand Graphite for up to 900˚F.WEDGE RINGStainless steel band wedged between valvebody and retainer ring by set screws to lockseal and retainer ring in position on valve sizes2" through 30". Socket head cap screws areused on valve sizes 36" and larger.WEDGE PINSProvide positive mechanical attachment ofdisc to shaft.4.6.8.PACKING GLANDSeparate part from gland flange,preventing uneven load distributionagainst packing.BEARINGSBoth above and below the disc,bearings maintain shaft alignment.Common materials include:Glass-backed TFE for up to 450˚F.(Not for steam service.)Luberized Bronze for up to 750˚F.300 Series Stainless Steel Nitridedfor up to 900˚F.DISC SPACERSDisc is centered by use of thrustspacers around shaft in sizes 2"to 4". Disc position stops or thrustbolt arrangements are used forlarger sizes.11.13.OVERTRAVEL STOPPrevents disc from over-rotating.SET SCREWSCone point screws force wedgering outward to lock seal retainer inposition on valve sizes 2" through30". Socket head cap screws areused on valve sizes 36" and larger.10.12.BODYANSI B16.34 design in either waferor lug configuration.DISC360˚ uninterupted sphericaledge for sealing. Profile isdesigned for maximum flowand equal percentage control.14.SEALPatented seal design for tight shutoff.Figure 415.RETAINER RINGRetains seal in valve. Standardsurface finish is 125 to 250 AARHand is compatible with both standardgaskets and spiral wound gasketdesigns. Outside diameter isrecessed within gasket sealingsurface to prevent external leakage.End Seal VariationThe ANSI 150 14" through 24" sizesfeature a two-piece shaft design. Thelower shaft utilizes an end seal in thebody to prevent external leakage. Thecomponent parts include an end seal,an end cap and end cap bolts.Lower Packing VariationThe ANSI 150 30" through 48"; ANSI 300 14"through 30"; ANSI 600 10" through 16" sizesfeature a two-piece shaft design which utilizesa lower packing seal in the valve body to preventexternal leakage. The component parts are ofthe same design used in the packing assemblyin the top of the valve body neck.END SEALEND CAPBOLTSPACKINGGLANDGLAND FLANGESTUDS & NUTSCM9003 SD - 04/0039003 Series High Performance Butterfly Valves (HPBV) 11