Dual-Plate Wafer

ASTAM SUPER CHECK? DesignThe super check valve consists of two plates hinged on a single pin. The load is carried by two plates supported at the center by a single beam the the cylindrical valve body. The curved portion of the plates are supported by a flat shoulder in the valve body. The torsion spring actuates the plates for positive closure before the reverse flow can occure in most applications. The stop pin serves as a positive stop to limit the plates from traveling more than 85 degrees. The design is as per API 594.? FeaturesThe valve is short Face-to-Face, easy to install in a narrow space. Compact figure and light weight compared with the conventional Swing Check Valve, and simple design is in the true sense of easy to maintain due to small number of component part in Astam’s valve.The cylindrical shape body gives full scope to its ability for high pressure-temperature piping in case of considering thermal contraction and expansion.Astam Super Check Valve does not only protect the casing of the high-priced pump and compressor against their piping load, but also reducing its piping work expense compared with the other traditional valves.Astam Super Check Valve preventsfrom Water Hammer. Reaction of torsion spring installed inner valve makes plate rapidly close prior to the start of revere flow of fluid due to the stop of power, thus prevents line, pump and other piping facilities from the damage and trouble due tothe Water Hammer.Metal-to-Metal seat is applied to the body of Ductile Iron, Cast steel,…etc. And SS316 overlay, SS410 overlay, Monel overlay, Stellite #6 overlay are available and can be specified to meet the fluid applications.Call for more detail +886-3-3675805or email to: sales@astam-valve.com Design:API 594, API 6D Dual-Plate Wafer Check ValveType:C1Dual-Plate Wafer Check Valve for by-passType:C2 Dual-Plate Double-Flanged Check Valve Type:C3Dual-Plate Full-Flange Check ValveType:C4DESCRIPTION OF PART NUMBER PLATE BODY SEAT TORQUE - / -SIZE TYPE CONNECTION SPRINGRATINGExample: Dual-Plate Wafer Check Valve, ANSI 12"-150#, R.F End,WCB BODY, CF8 PLATE, EPDM SEATS.S 316 SPRING LOW TORQUSE.TYPESYMBOL DESIGNATIONC1 Dual-Plate Wafer Check ValveC2 Dual-Plate Wafer Check Valve for by-passC3 Dual-Plate Double-Flanged Wafer Check ValveC4 Dual-Plate Full-Flange Wafer Check ValveRATINGANSI A 125* 250* 150 300 400 600 900 1500 2500JIS J 5 10* 16 10 20 30 40 63 100ISO,BS S 10 16* 25 16 40 64 100 160 250 320NOTE:"*"means only for CAST IRON Valve. 90 1 2 3 4 5 6Standard 87SYMBOL12 C1 A3 R W S3 E S LMATERIALSBODY, PLATE End ConnectionFlat FaceC A126 Class B G5501 FC250 F.FD A536 65-45-12 G5502 FCD450 Raised FaceD1 A395 B8270 FCD-S R.FRing JointR.JA216 Gr.WCB G5151 SCPH2A352 Gr.LCB G5152 SCPL1SEATS1 A217 Gr.CA15 G5121 SCS1S3 A351 Gr.CF8 G5121 SCS13 N NBR(Buna-N) 0~80?S4 A351 Gr.CF8M G5121 SCS 14 C CR(Neoprene) -10~80?A351 Gr.CF3M G5121 SCS16 E EPDM(EPT) -10~100?F FPE(VITON-A) -30~150?O Matel to MatelB B584 C83600 H5120 CAC406 S6 S.S. 316 Overlay -268~538?A B148 C95800 H5120 CAC703 S1 13%Cr. Overlay6 Stellite 6# OverlayOther materials are available upon request.Spring TorqsueSPRINGS S.S. 316 121?X INCONEL X-750 538?Dual-Plate Wafer Check Valves of FLOW COEFFICIENT:(CV Value)40A 50A 65A 80A 100A 125A 150A 200A 250A 300A 350A1-1/2" 2" 2-1/2" 3" 4" 5" 6" 8" 10" 12" 14"CV 46 72 132 180 380 635 864 1650 3017 4280 5790400A 450A 500A 550A 600A 650A 700A 750A 800A 850A 900A16" 18" 20" 22" 24" 26" 28" 12" 14" 16" 18"CV 7922 10642 13400 19500 23500 25000 30000 37200 45000 51000 59000950A 1000A 1050A 1100A 1150A 1200A 1250A 1300A 1350A20" 22" 24" 26" 28" 24" 26" 28" 24"CV 70000 81000 90000 100000 116500 136100 139200 143500 154000JISSYMBOL DESIGNATION TEMPERATURETYPE SYMBOL FINISH63AARH125~250 AARH63AARHDN(NPS)Liquid: Max. 90mAq,Gas: Max.1kg/cm2Gas: Max. 1kgs/cm2StandardSYMBOL DESIGNATION TEMP. (MAX.)LLOWNo MarkFDN(NPS)DN(NPS)Torque Type SYMBOL REMARKSLWS6RJSYMBOL ANSI