Plastic simply isn’t fantastic
I have decided to replace my old Mikuni MX40 heater for a new Mikuni Hydro 5. This was delivered with a plastic inline fuel filter. I know this isn’t acceptable. Mikuni couldn’t offer a metal/glass alternative. Do you know if a suitable filter is available? I feel that a filtered supply must be better for the heater.
via the website
QYou can use a plastic filter bowl provided it complies with the following BSS requirements: Section 12.2.2. Are all fuel filters inside engine spaces fire-resistant? Check all fuel filters(including drain plugs) located inside engine spaces are marked or recognised as fire-resistant. If not marked or recognised as being suitably fire-resistant, verify this by examining any presented declaration from the manufacturer or supplier.
Fuel filters (including drain plugs) located inside engine spaces must have intrinsic fire resistance of at least 2.5 minutes at 600C. NOTE all metal fuel filters are accepted as being sufficiently fire resistant. NOTE fuel filters marked with ISO 10088 are acceptable.
So first see if the filter bowl is so marked to comply with the above. If not, see if your supplier will provide you with a document stating that it complies with the BSS requirement, either ISO 10088 or resisting 600C for 2.5 minutes. If it does not, see if it can be located ‘outside the engine space’. I suspect the Mikuni filter may well comply but you might have to obtain documentary proof.
If it really isn’t suitable, talk to a diesel equipment specialist or chandlery.