Equipment is connected to the medical gas pipeline system via station outlets (US) or terminal units (ISO).
[4] In small medical centers with a low patient capacity, oxygen is usually supplied by a manifold of multiple high-pressure cylinders.
[5] Nitrous oxide is supplied to various surgical suites for its anaesthetic functions during preoperative procedures.
Some bulk systems exist, but are no longer installed due to environmental concerns and overall reduced consumption of nitrous oxide.
Nitrogen is typically used to power pneumatic surgical equipment during various procedures, and is supplied by high-pressure cylinders.
Early air compressors could not offer the purity required to drive surgical equipment.
This gas is typically used pure for insufflation during surgery, but can also be used in its liquid form for cryotherapy or local analgesia.
Although it is similar to a medical vacuum system, some building codes require anaesthetic gases to be scavenged separately.