I looked through the ABYC standards. The two most pertinent standards are H-33 "Diesel Fuel Systems," and P-4 "Marine Inboard Engines and Transmissions." NO MENTION OF A SHIELD REQUIREMENT FOR THE FILTER BOWL.
Nope, I am talking about the shield. I find that most installations have the filters so close to the deckhead they have me putting my forehead on the filter to see whats at the bottom of the bowl. I have a hard time focusing at 3"Are you thinking of the full metal bowls instead of the heat shields? The heat shields allow one to fully see the inside of the bowl. I agree that they are a silly requirement. At most, the shields may slightly delay a bowl melt as long as they were located well above the source of heat.