Accession B1988-0086 - Fry 2nd 1988 accession

Identity area

Reference code

UTA 1300-B1988-0086


Fry 2nd 1988 accession


  • 1941-1944 (Creation)

Level of description


Extent and medium

0.52 m of textual and graphic records; artifacts (4 boxes)

Context area

Name of creator


Archival history

Immediate source of acquisition or transfer

Content and structure area

Scope and content

Reports, photographs and 2 valves relating to Demand Valves, #1 Clinical Investigation Unit.

Appraisal, destruction and scheduling


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Conditions of access and use area

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Finding aids

No file list.

Uploaded finding aid

Allied materials area

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Notes area


The Department of Physics carried out research for the Department of National Defence during World War II involving C313 demand valve. This apparatus produced in the Physics workshop is an early test model of the C313 demand valve. The serial # 1 of the assembly line further modified by the addition of an override to release oxygen continuously at altitude over 30,000 ft. No further models of this override were produced.

Alternative identifier(s)

Reference number (textual records)

B1988-0086/001 – /002

Reference number (photographs)


Reference number (artifacts)


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Description control area

Description identifier

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Dates of creation revision deletion




Accession area

Retrieval Code

  • Box: B1988-0086/001
  • Box: B1988-0086/002
  • Box: B1988-0086/003P
  • Box: B1988-0086/004ART

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