Cast Iron or Stainless Steel Lug Dual Plate Wafer Check Valve

Cast Iron or Stainless Steel Lug Dual Plate Wafer Check Valve Conform to API 594, API 6D, and ASME B16.34. They are tested according to API 598, and marked as per MSS SP-25 1. Construction is as follows   - Dual Plate- With Spring- Round, Full Lug or Double Flange- Soft or Metal Seated- Retainer or Retainer Less Design- Wafer Ends to Suit for Flanged Ends(ASME B16.5 and B16.47 A/B)2. Main Part & Materials   Part NamesPart MaterialsBodyWCBLCBWC6CF8CF8MCF3CF3MC83600/C95800BonnetWCBLCBWC6CF8CF8MCF3CF3MC83600/C95800Disc/Ball/WedgeWCBLCBWC6CF8CF8MCF3CF3MC83600/C95800Seat/Seat Ring13%CrSS30413%CrSS304SS316SS304LSS316LC83600/C95800PTFE/NBR/EPDM/VITONPackingGraphite/PTFEGasketSS304+Graphite/SS304+GraphiteBolts/NutsB7/2HL7/4B16/4B8/8B8M/8MB8/8B8M/8MB8M/8MSuitable MediumW.O.G etc.HNO3, CH3OOH etc.Sea Water etc.Suitable Temperature-29~425 °C-46~340 °C-46~340 °C-196~427 °C-196~427 °C-196~427 °C-196~427 °C-29~220 °C3. Normal Pressure Rating PN10~PN420, CLASS150~2500 4. Normal Size Range DN40~DN1000, 11/2"~40" 5. Pictures Final Inspection Shipment   /* March 10, 2023 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1