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From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Table of nozzle dimensions concerning the flow of liquids through them, with an accompanying diagram.

Identifier  ExFiles\Box 36\1\  scan 038
Date  10th February 1916
  
R.R. 235 a (400 T) (S C. 536. 10-2-16) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 1546.
EFG
2
X. 2907 - FLOW OF LIQUIDS THROUGH NOZZLES

Nozzle Bore Length.
A.1 3/64 1/2"
A2 3/64 3/4"
A3 3/64 1 1/4"
A4 3/64 2"
B1 3/32 3/4"
B2 3/32 1 1/4"
B3 3/32 2"
B4 3/32 2 3/4"
C1 1/8 1 1/4"
C2 1/8 2"
C3 1/8 2 3/4"
C4 1/8 3 1/2"
D1 3/16 2"
D2 3/16 2 3/4"
D3 3/16 3 1/2"
D4 3/16 4 1/2"

[Diagram of a nozzle cross-section]
.750"
Length
Bore
  
  


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