Fuel module for engine having service valve assembly for common drain from primary and secondary filters

A filter module for an engine comprising:

• a module housing including a primary filter receptacle, and a secondary filter receptacle, and having formed therein a supply inlet, a filtered outlet, and a drain port;
• the module housing further having formed therein a primary-side passage fluidly connected to the primary filter receptacle, a secondary-side passage fluidly connected to the secondary filter receptacle, and a cross passage;
• and
• a service valve assembly at least partially within the cross passage and adjustable from a closed configuration blocking the primary-side passage from the secondary-side passage, to an open configuration.

A module housing for a fuel filter module comprising:

• a one-piece housing body including an upper side, a lower side, and a plurality of transverse bolt holes extending horizontally through the one-piece housing body;
• the one-piece housing body including a primary filter receptable, and a secondary filter receptacle each formed in the upper side, a fuel supply inlet, a filtered fuel outlet, and a drain port formed in the lower side;
• the one-piece housing body further having formed therein a primary-side fuel passage fluidly connected to the primary filter receptacle and extending to an outgoing pump port formed in the lower side, a filtered fuel outlet, an incoming pump port formed in the lower side, and a secondary-side fuel passage fluidly connected to the secondary filter receptacle and to one of the outgoing pump port or the filtered fuel outlet;
• and
• the one-piece housing body further having formed therein a cross passage extending between the primary-side fuel passage and the secondary-side fuel passage and structured to fluidly connect the primary-side fuel passage to the secondary-side fuel passage.