b'ASG SERIES (STEEL)ASG SERIESINSTALLATIONInadditiontothecompactshape,SUPER-CHECKValvescanbe installed either horizontally or vertically. PinretainerplugsPinNON-SLAMSUPERCHECKisanon-slamcheckvalvebecauseit Lugoperatesonflowcessation,notflowreversal.bearingThenormalpositionoftheplatesisclosed,heldagainsttheseatbytheuniquespringdesign.Asflowbegins,theheelsofthetwoplatesareliftedofftheseatfaceonthecentralrib. BodyThecrackingpressureislessthan21kPa(3psi)acrossmostoftherange(largersizesandhigherclassesproportionatelyareslightlyhigher).Asflowincreases, Springtheplatesthenpivotagainstthespringpressure.Sincetheheelshavealreadyliftedofftheribseatthereis Body Platenoscruborwear,eitherontherib,bodyorplateseatingsurfaces.Apressureofonly27kPa(4psi)is bearingrequiredtokeeptheplatesfullyopenin150class,proportionately higher in other classes and largerSHOCK BUMPERSsizes.(Lightspringsalsoavailable)Whenflowstopsandpressureceasesthespringclosestheplates.Flow The problem:CompetitivedesignsreversalisthenstoppedbytheclosedSupercheck donothaveshockbumpers.valveandanybackpressureonlyservestomakethe The solution:TheSupercheck valve seal more tightly. designwhererequiredinlarger sizes(&higherclasses)usesshockOperating Temperature Range for Seal Materials bumpersonthebackofeachdisc.ThesebumpersmeetwhenthevalveMaterial Operating Temperature C isinthefullopenposition,thuspreventingthediscsEPDM -18to110 fromstrikingthestoppin.Thisarrangementreducestheshockforceonthehinges;ensuringinternalBuna-N -57to120 componentshaveanextendedcyclelifewithminimalwearunderthemostsevereserviceconditions.Neoprene -40to120Metal* -267to537(AsBody) SLIM PLATE DESIGNViton-A (FKM) -40to204 Standard in all sizes. Ensures lower Viton-B -29to200 cracking pressures & large flow rates.Thetemperaturerangeisageneralguide.Astemperatureincreasethepressureratingofthevalvedecreases.Askforpressure/temperaturechart.*Dependantonbodymaterial.Spring Operating Temperature PinretainerplugsSpring Material Maximum Temperature CType 316SS 120Inconel x 750(Heat treated) 5378 SUPERCHECK - Check Valves - Wafer Style'