**2026-09-07 · Game Visionary · U5 simplified in the working design.** A Siphon may consume any carried wet salvage bundle, not only a neighboring one. Its three-charge yield, one-use consumption, shelter-set battery feed and all other restrictions remain. This removes packing work from the salvage-versus-power decision under the [game vision](/Hold%20the%20Flood/Brief#game-vision); prior U5 is preserved at [04a42d](/Hold%20The%20Flood/Equipment/Utility%20Modules?revision=04a42d). Earlier submission metadata follows.
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**EQP102 / Utility Modules r3 · 2026-09-07 UTC · Equipment and Build Designer · Named first Insulation/Siphon offers and shared-rule basin persistence mirrored; catalogue remains in review.**
## Siphon — U5; retained, target/feed and overflow defined
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- **Trigger / effect / target:** select one orthogonally touching wet salvage bundle, consume it, and supply three units once to its designated rack battery. The Siphon itself is also consumed, freeing its cell and the bundle's. One cell before use plus the sacrificed cargo cell; no charge input.
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- **Link exception, explicit:** at shelter choose its one **output feed** into one battery. This is conversion, not a battery powering another battery; no chains or reverse flow. The target battery may still have its ordinary output link to coil/arc/beacon. No feed changes in the field. A touching bundle may be chosen when triggering, including a newly picked-up one.
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- **Information / restrictions:** preview “lose 1 bundle and Siphon; bank +3; overflow N.” Requires an eligible non-planted, non-reserved battery and a touching bundle. If no capacity exists, refuse use. If less than three fits, warn and require deliberate confirmation; excess is lost. No automatic spill into a reserve. Consuming cargo makes no progress payment and never reveals a recipe or clue.
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- **Trigger / effect / target:** select one wet salvage bundle anywhere in the carried rack, consume it, and supply three units once to its designated rack battery. The Siphon itself is also consumed, freeing its cell and the bundle's. One cell before use plus the sacrificed cargo cell; no charge input.
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- **Link exception, explicit:** at shelter choose its one **output feed** into one battery. This is conversion, not a battery powering another battery; no chains or reverse flow. The target battery may still have its ordinary output link to coil/arc/beacon. No feed changes in the field. Choose the cargo when triggering, including a newly picked-up bundle; its cell need not touch the Siphon. This is a deliberate transfer of carried fuel, not conduction through the rack. Ground cargo and the unique crane parts are not eligible.
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- **Information / restrictions:** preview “lose 1 bundle and Siphon; bank +3; overflow N.” Requires an eligible non-planted, non-reserved battery and a carried wet salvage bundle. Adjacency is not an eligibility condition. If no capacity exists, refuse use. If less than three fits, warn and require deliberate confirmation; excess is lost. No automatic spill into a reserve. Consuming cargo makes no progress payment and never reveals a recipe or clue.
- **Combination / keep reason:** seven stored units plus one bundle can ready the first coil discharge; an empty battery plus one Siphon reaches only three, so this is not a guaranteed free start. Finishes an arc bank or supplies a short beacon diversion. It remains useful when fresh enemy charge is hard to reach, whereas a spare bank merely stores what the player can collect.
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- **Acquisition:** propose the first converter offer at the **Tram summit stores, Siphon versus Kit**, beside the existing loose bundle and summit shelter in Campaign 9366c8 §3.2. Inspect either, take one per expedition; taking Siphon forgoes the Kit offer. Inspection records its recipe even on rescue; fitting the feed still requires shelter. This gives the generic converter-cache proposal a named discovery without adding another item. A later Beacon + Siphon + empty bank Circuit set costs three cells; sacrificing one locally gathered bundle supplies three charge for at most thirty lit seconds, not a full Coil. It competes with banking that salvage and with the free manual return. Campaign owns actual placement and a useful short-lure route; none is certified here. No repeatable dismantling/recrafting loop is proposed.
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- **Acquisition / actual Tram benefit:** the summit stores offer Siphon versus Kit beside the loose bundle and shelter. Inspect either, take one per expedition; inspection records its recipe, including on rescue. Fit its output feed at shelter. In [Campaign’s integrated later return](/Hold%20the%20Flood/Campaign), the rail-blocking Heavy supplies five charge: the quick return needs no portable lure or conversion. If the player stays for another observation, conversion can extend the lure from fifty to eighty seconds, sacrificing the bundle and Siphon for thirty seconds of extra margin. Starting from an actually empty bank would give only three charge / thirty seconds; that arithmetic is not evidence that the adopted route requires it. The [Build Paths example](/Hold%20The%20Flood/Equipment/Build%20Paths#the-discovery-that-changes-a-later-approach-salvage-can-pay-for-a-short-lure) owns the preparation comparison. No repeatable dismantling/recrafting loop is proposed.
