Object

Stephenson's Workshop Pressure Valve

Mechanical pressure regulation valve in Stephenson's workshop

3 appearances

Appearances in the Narrative

When this object appears and how it's used

3 moments

Stephenson’s pressure valve becomes the focal point of technical discussion between Stephenson and the Doctor. Though briefly mentioned as an issue, the Doctor deflects Stephenson’s concern, and no further action is taken before the Doctor’s departure.

Before: Mounted and active on Stephenson’s high-pressure system piping, warm from recent use.

After: Still mounted and operational, its significance overshadowed by the Doctor’s sudden departure.

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S22E6 · The Mark of the Rani Part 2

Doctor and Ravensworth spar over the TARDIS

The mechanical brass valve on Stephenson’s high-pressure system is briefly referenced by Stephenson and the Doctor in passing. Its existence highlights the workshop’s dual function as both an industrial site and a zone of experimental science, grounding the Doctor’s jocular deflection in tangible mechanical work.

Before: The valve is mounted on working pipes in Stephenson’s workshop, warm from recent use.

After: The valve remains in place, its functional state unchanged but its mention serving as fleeting context.

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S22E6 · The Mark of the Rani Part 2

TARDIS dematerializes with Doctor and Peri

Stephenson points out a problem with the pressure valve on his high-pressure system to the Doctor. The valve is not directly manipulated here but its mention underscores the technical stakes in the workshop while the Doctor prepares for escape.

Before: Part of Stephenson’s workshop machinery, causing concern due to technical malfunction.

After: Unresolved issue left in the workshop after the Doctor and Peri’s departure.

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