Aluminum Alloy Fire Manhole Cover for Fire Truck

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.