Spring-assisted, Non-slam, Axial Flow, Silent Check Valves

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DFT’s family of In-Line Check Valves are available in a variety of designs:

• Basic-Check®

• Restrictor Check• SCV®

• SCV-R®

• Vacuum Breaker• DLC®

• Excalibur®

• GLC®

• GLC®-Cast Iron• PDC®

• DSV®

• ALC®

• FBC®

• WLC®

• WLC®-Cast Iron• Y-Calibur™

DFT® Basic-Check® Valve

DFT® Restrictor Check Valve• Highercrackingpressures(2to40psi)• 1/4”to2-1/2”linesize• 450to2500CWP• NPTThreadedends• Stainlesssteelconstruction• Edge-guideddisc• Springassistedsilentclosing,non-slam• Tightshutoff–lappeddisc&seat• Horizontalorverticalinstallation• Easymaintenance• Versatile• Options:•Softseat

DFT® Model SCV-R® Check Valve

DFT® Model DSV® Sanitary Check Valve

2 www.dft-valves.com Fax: 610-524-9242

DFT® Model DLC® Check Valve

• Straightthruinlineor offsetinlet/outlet

DFT® Vacuum Breakers• 1”to4”linesize(MNPT)• 450to6000CWP• ThreadedO.D.(MNPT)• Unthreadedinletbore• Stainlesssteelconstruction• Edge-guideddisc• Springassistedsilentclosing,non-slam• Tightshutoff–lappeddisc&seat• Horizontalorverticalinstallation• Easymaintenance• Versatile• Options:•Inconel®X-750spring•Softseat

DFT® Model SCV® Check Valve

• 1/2”to4”linesize• 150CWP,108ANSIpressureclass• Clampedends• 316Lbodyandseat• 316disc,spring&guideassembly• 25Rainternalsurfacefinish• Electropolishedspring(15Ra) •.16to.66psigcrackingpressure• EPDMbodyseal• Edge-guideddisc(1/2”thru2”)• Center-guideddisc(2-1/2”thru4”)• Springassistedsilentclosing,non-slam• Tightshutoff–lappeddisc&seat• Horizontalorverticalinstallation• CIP(CleanInPlace)• Options: •15Rainternalsurfacefinish •Tuf-Flex®orViton®bodyseal

• 1/2”to3”linesize• 750&3600CWP• FNPTandSocketWeldends• Stainlesssteelconstruction• Inconel®X-750spring• Zelon®“O”ringbodyseal• Edge-guideddisc• Springassistedsilentclosing,non-slam• Tightshutoff–lappeddisc&seat• Horizontalorverticalinstallation• Simplified5-partconstruction• Easymaintenance• Versatile• Options: •Alloy20orHastelloy®Cbody •Sealweldbody •316SSspring •Softseat

• Highercrackingpressures(.8to40.8psig)• 1/2”to2”linesize• 750CWP• FNPTandSocketWeldends• Stainlesssteelconstruction• Inconel®X-750spring• Zelon®“O”ringbodyseal• Edge-guideddisc• Springassistedsilentclosing,non-slam• Tightshutoff–lappeddisc&seat• Horizontalorverticalinstallation• Easymaintenance• Versatile• Options: •Alloy20orHastelloy®Cbody •Sealweldbody •316SSspring •Softseat

• 1/2”to3”linesize• ASMEclass150and300• RFflangedends• ASMEB16.10face-to-facedimensions• Stainlesssteelconstruction• Inconel®X-750spring• Electronbeamweldedbody• Edge-guideddisc• Springassistedsilentclosing,non-slam• Tightshutoff–lappeddisc&seat• Horizontalorverticalinstallation• Simplified4-partconstruction• Versatile• Options: •Alloy20orHastelloy®Cbody •316SSspring •Softseat(TFE-Viton®only)

• 1/4”to2-1/2”linesize• 450to6000CWP• NPTThreadedends• Stainlesssteelconstruction• Edge-guideddisc• Springassistedsilentclosing,non-slam• Tightshutoff–lappeddisc&seat• Horizontalorverticalinstallation• Easymaintenance• Versatile• Options:•Inconel®X-750spring•Softseat

DFT® Excalibur® Silent Check Valve• 2”to24”linesize*• ASMEclass150to1500• RF&RTJflangedends,buttweldends• ASMEB16.10face-to-facedimensions• StandardBodyMaterials:** •A216WCBcarbonsteel •A351CF8Mstainlesssteel• Stainlesssteeltrim• Center-guided/dual-guidedstem• Springassistedsilentclosing,non-slam• Tightshutoff–lappeddisc&seat• Two-piecebody• Horizontalorverticalinstallation• Protectedspring• AxialFlow• Nozzlestyle• Easymaintenance• Versatile

DFT® Model GLC® Silent Check Valve• 2”to42”linesize• ASMEclass150to2500• RF&RTJflangedends• “Short”face-to-facedimensions• API6FDFireTest •ASMEclass150and300,2”to24”• StandardBodyMaterials:** •A216WCBcarbonsteel •A351CF8Mstainlesssteel• Stainlesssteeltrim• Center-guided/dual-guidedstem• Springassistedsilentclosing,non-slam• Tightshutoff–lappeddisc&seat• Horizontalorverticalinstallation• Protectedspring• AxialFlow• Nozzlestyle• Easymaintenance• Versatile

DFT® Model PDC® Check Valve• Pulse-dampeddesignformodulating“air”or“gas”applications •Dischargeofreciprocatingair/gascompressors •Self-sizing• 2”to20”linesize*• ASMEclass150to1500• RF&RTJflangedends• ASMEB16.10face-to-facedimensions• StandardBodyMaterials:** •A216WCBcarbonsteel •A351CF8Mstainlesssteel •A352LCClow-carbonsteel• Stainlesssteeltrim• Center-guided/dual-guidedstem• Springassistedsilentclosing,non-slam• Tightshutoff–lappeddisc&seat• Horizontalorverticalinstallation• Protectedspring• AxialFlow• Nozzlestyle

• 2”to24”linesize• ASMEclass150and300• RFwaferends• API594face-to-facedimensions• StandardBodyMaterials: •A216WCBcarbonsteel •A351CF8Mstainlesssteel• Stainlesssteelseat,disc&bushing• Nitronic60stem• Inconel®X-750spring• Center-guidedstem• Springassistedsilentclosing,non-slam• Tightshutoff–lappeddisc&seat• Horizontalorverticalinstallation• Protectedspring• Waferandwafer-lugdesigns• AxialFlow• Nozzlestyle

DFT® Model ALC® Wafer Style Check Valve

3Toll-Free: 800-206-4013 Email: dft@dft-valves.comTel: 610-363-8903

DFT® Nickel-Aluminum Bronze Valves• Excalibur®-NAB• GLC® - NAB

Thesesilentcheckvalvesarespring-assisted,nozzlestyle,non-slamcheckvalvesthataredesignedtowithstandtheharshenvironmentsofsaltandbrackishwaterapplicationswherecorrosionresistanceandmarinelifedeterrentsareamust.DFT’scenterguidedcheckvalvesprovidereliable,low-maintenanceserviceandsolvetheproblemsassociatedwithwaterhammerandsevereapplicationsandenvironments.SeeDFT®ModelExcalibur®SilentCheckValve&DFT®ModelGLC®SilentCheckValveaboveforacompletelistsoffeatures.

*ConsultDFTforlargersizes.**ConsultDFTforadditionalalloys.

DFT® Model WLC® Wafer Style Check Valve• 1”to10”linesize• ASMEclass150to2500• RF&RTJwaferends• Face-to-facedimensions: •MSSSP-126(class150and300) •API594(class600andabove)• StandardBodyMaterials: •A216WCBcarbonsteel •A351CF8Mstainlesssteel• Optionalbodymaterials •Alloy20•Inconel®625•Titanium •Hastelloy®•DuplexSS• Stainlesssteeltrim• Center-guided/dual-guidedstem• Springassistedsilentclosing,non-slam• Tightshutoff–lappeddisc&seat• Horizontalorverticalinstallation• Protectedspring• Waferdesign

• AxialFlow• Nozzlestyle• EasyMaintenance• Versatile• Options: •Inconel®X-750spring •Softseat •Customsizingforlowflowapplications

•Stellitedtrim

• Options: •Inconel®X-750spring •Softseat •Customsizingforlowflowapplications

•Stellitedtrim •NACE

• Easymaintenance• Options: •Inconel®X-750spring •Softseat•NACE

• Options: •Inconel®X-750spring •Softseat •Customsizingforlowflowapplications

•Stellitedtrim •NACE

• Easymaintenance• Versatile• Options: •316SSspring •Softseat •Customsizingforlowflowapplications

DFT® Model FBC® Compact Insert Check Valve

DFT® Model WLC®-Cast Iron Wafer Style Check Valve

DFT Inc. specializes in preventing check valve problems and failures caused by water hammer and reverse flow. The in-line, spring-assisted check valves are designed to meet customer requirements for horizontal and vertical installations in liquids, gas or steam.

Consult DFT for engineered sizing solutions for your check valve related issues.

for more informationFACTORYDFT Inc.140 Sheree Boulevard P.O. Box 566Exton, PA 19341-0566

610-363-8903800-206-4013FAX 610-524-9242EMAIL dft@dft-valves.comINTERNET www.dft-valves.com

REPRESENTED BY:

DFT valves serve broad process industries:•Chemical• Food & Beverage•General Industry•Mining•Oil and Gas

• Petrochemical• Pharmaceutical• Power Generation• Pulp and Paper• Steel

• Textile•Ultra-pure Water•Desalination

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DFT® Model GLC®-Cast Iron Silent Check Valve

Hastelloy® is a Registered Trademark of Haynes International Inc.; Inconel® and Monel® are Registered Trademarks of Special Metal Corporation; Tuf-Flex® is a Registered Trademark of Rubber Fab Inc.; Teflon® and Viton® are Registered Trademarks of E.I. DuPont Corp. ALC®, Basic-Check®, DFT®, DLC®, DSV®, Excalibur®, FBC®, GLC®, PDC®, SCV®, SCV-R®, WLC®, Zelon® are Registered Trademarks of DFT Inc. Y-Calibur™ and The Check Valve Doctor ™ are trademarks of DFT Inc. All other trademarks are the properties of their respective owners and are used for purposes of identification only.

DFT® Y-Calibur™ Silent Check Valve • Fully repairable in-line• 4” to 14” line size• ASME class 600 to 2500 • Buttweld ends • ASME B16.10 face-to-face dimensions• Standard Body Materials:** • A216 WCB carbon steel • A351 CF8M stainless steel• Stainless steel trim• Center-guided/dual-guided stem• Spring assisted silent closing• Tight shutoff – lapped disc & seat• Horizontal or vertical installation• Protected spring• Axial Flow• Nozzle style• Easy maintenance• Versatile

REV. 2_05.2014

** Consult DFT for additional alloys.

• 1” to 4” line size• ASME class 150 and 300• Meets ASME B16.34-2013 & MSS SP-126• Use in Schedule 40 pipe, consult factory for Schedule 80• Stainless steel construction• Edge-guided disc• Spring assisted silent closing, non-slam• Tight shutoff – lapped disc & seat• Horizontal or vertical installation• Extended tag for easy identification of the installed valve• Easy maintenance• Versatile

• 2-1/2” to 24” line size• ASME class 125 and 250 • 2 ½” to 24” line size (Cl. 125) • 2 ½” to 8” line size (Cl. 250)• FF Flanged ends• Meets MSS SP-125• A126 Class B Cast iron body• Bronze or 316 SS trim• Center-guided/dual-guided stem• Spring assisted silent closing, non-slam• AWWA seat leakage• Horizontal or vertical installation• Axial Flow• Nozzle style• Easy maintenance

• 2” to 10” line size• ASME class 125 and 250• FF wafer ends• Meets MSS SP-125• A126 Class B Cast iron body• Bronze or 316 SS trim• Center-guided/dual-guided stem• Spring assisted silent closing, non-slam• AWWA seat leakage• Horizontal or vertical installation• Protected spring• Wafer design• Axial Flow• Nozzle style• Easy maintenance

• Options: • Inconel® X-750 spring • Custom sizing for low

flow applications • Stellited trim • NACE