Rolls-Royce Archives
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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).
Graph comparing the delivery rates of a Bensport petrol pump with varying needle valve bore sizes and configurations.

Identifier  ExFiles\Box 27a\2\  Scan206
Date  22th June 1933
  
BENSPORT PETROL PUMP
COMPLETE SUCTION SYSTEM .250" DIA PIPES. DELIVERY THROUGH TWO S.U. FLOAT CHAMBERS
5/16" DELIVERY PIPES.
INCREASED DIA. NEEDLE VALVE BORE (.125" DIA) COMPARED WITH STD. (.095" DIA)
DELIVERY PTS/HR
PUMP SPEED R.P.M
FLOAT CHAMBERS REMOVED
INCREASED NEEDLE VALVE BORE .125" DIA
STD. NEEDLE VALVE BORE .095" DIA
A.B.
  
  


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