The Cap is a special structure which snaps onto a pipe entrance. When placed onto a pipe entrance, it will stop any iridium from flowing out of it. If the pipe entrance was previously leaking, the Cap will prevent the loss of iridium from the leak.
Another more expensive, but more adaptive way of blocking pipes is the Valve.
The Cap is a very useful structure for anticipating a pipe network's expansion. Caps have the special property of being vulnerable to the Portafab, being destroyed by it in 2 hits or less. If a T-Junction or a Four-Way is placed down but not all of its entrances are needed at the present time, the Cap is a very effective means of ensuring no iridium is lost unnecessarily to leaks.
|Pipes||Pipe • T-Junction • Four-Way • Elbow|
|Extractors||Well Pump • Condenser • Submersible • Crystal Resonator|
|Tanks||Small Tank • Standard Tank • Large Tank • Reservoir|
Cap • Refill Station
|Tech||Distributor Cap • Gauge|
|Valves||Valve • Drop Tank|
Seat • Bridge
|Defense||Wall • Keep • Gate|
|Lighting||Light Source • Light Post|
|Blocks||Block • HollowBlock • Platform Block • Slab Block|
|Wedges||Wedge 30 • Wedge 45|
Shield Generator • Priority Beacon
|Production||Arsenal • Garage • S.S.I.M|
|Offense||Bore • Artillery|
|Defense||Turret • Arc Turret • Point Defense|
Spawn Point • Upgrade Station
|Structure Technology||Fabricator • Automechanic|
|Miscellaneous Technology||Boost Pad • Distributor • Spatial Anchor • Transceiver|