Product Name: Aluminum Road Fuel Tanker Manhole Cover Model NO.: C801L-460 Material: Aluminum Trademark: DonOO Transport Package: Carton Specification: 16" Origin: Zhejiang Product Description Internationallyacceptedandspecifiedbyoilcompaniesaroundtheworldtoassistwiththesafeconveyanceofpetroleumbasedproducts.The Donoo rangeoflightweightaluminiummanholecoversofferunrivalledsafetyfeaturesandoperationalbenefits.Pressureandvacuumventfittedasstandardfortankbreathing;variousratingsareavailabletosuitoperationalrequirements.SpringloadedfillcapprovidesemergencyfireengulfmentventingtoNTTCDOT406,requiredintheeventofthetankbeingexposedtoafire.Emergencyventingcapacity7000m3/h,airat350mb.AutomaticsealingofthePressureandVacuumventinarolloversituationpreventsdangerousandcostlyspillage.Self-aligningsealensurespressuretightoperationatalltimes.Twostageopeningallowssafereleaseofresidualcompartmentpressurebeforefullyopeningfillcap.Secure12and24boltfixingvariantsavailable.250mm(10")fillcapforsafe,troublefreetoploading.Lightweightaluminiumbaseplateforincreasedpayloads.Highqualitydiecastbaseplateandcomponentmaterialstointernationalstandardsareusedfordurabilityandperformance.Lowprofiledesignminimisesrolloverprotectionrequirements.Securityfacilityforpadlock,wireorplasticseal.Accessoryportsfor threadedcompartmentventvalveandover-spillpreventionprobe.ThebaseplatecanbesuppliedwithaccessoryholesfortankersthataretobeconvertedtoBLVRlater.