An Automatic Pressure Regulator.

1924 ◽  
Vol 16 (2) ◽  
pp. 160-161 ◽  
Author(s):  
Louis E. Dawson
Keyword(s):  
Pressure Regulator ◽  
Automatic Pressure

A Precise Automatic Pressure Regulator

1925 ◽  
Vol 29 (11) ◽  
pp. 1408-1414
Author(s):  
L. E. Dawson
Keyword(s):  
Pressure Regulator ◽  
Automatic Pressure

Some Hydraulic Features of Puntledge Generating Plant

1959 ◽  
Vol 81 (4) ◽  
pp. 534-541
Author(s):  
A. W. Lash ◽  
R. E. Passmore
Keyword(s):  
Remote Control ◽  
Pressure Fluctuations ◽  
Pressure Regulator ◽  
Automatic Pressure ◽  
And Control ◽  
Design And Construction

Puntledge Generating Plant has an exceptionally long penstock in relation to head, and pressure fluctuations are limited by means of an automatic pressure regulator. The automatic and remote-control features of the plant are described in relation to this equipment. In Part I the reasons for the design adopted are outlined, and the testing and control features are described. In Part II a detailed description is given of the pressure-regulator design and construction.

Oscillations in Apparent Hydraulic Conductance of Cotton Plants

1985 ◽  
Vol 12 (5) ◽  
pp. 455 ◽  
Author(s):  
J.B Passioura ◽  
C.B Tanner
Keyword(s):  
Pressure Drop ◽  
Xylem Sap ◽  
Hydraulic Conductance ◽  
Pressure Chamber ◽  
Pressure Regulator ◽  
Pneumatic Pressure ◽  
Automatic Pressure ◽  
Cotton Plants ◽  
Damped Oscillation

Cotton plants were grown in pots that could be encased in a pressure chamber so that a pneumatic pressure could be applied to the roots while the shoot was enclosed in an unpressurized cuvette. Enough pressure (the 'balancing pressure') was applied to the roots to raise the pressure of the xylem sap in the shoot to that of the atmosphere, so that a cut in the xylem of the shoot was on the verge of bleeding. The balancing pressure was accurately maintained, despite any changes in the transpirational flux, by means of an automatic pressure regulator. When the transpirational flux was suddenly changed by changing the humidity in the cuvette, the balancing pressure started to oscillate even though flux was steady at its new level, i.e. the apparent hydraulic conductance (the ratio of transpirational flux to the pressure drop across the plant) oscillated. In plants that were phosphorus-deficient, the oscillations were large and had a period of 30-50 min; though damped, they persisted for several cycles. Phosphorussufficient plants gave one, critically-damped, oscillation.

scholarly journals A Multiple-purpose Automatic Pressure Regulator

1983 ◽  
Vol 11 (3) ◽  
pp. 263-265 ◽  
Author(s):  
P. D. Cameron ◽  
T. E. Oh ◽  
I. Jack
Keyword(s):  
Constant Pressure ◽  
Infusion Pump ◽  
Gas Pressure ◽  
Pressure Regulator ◽  
Emergency Situations ◽  
Intravenous Infusions ◽  
Automatic Pressure ◽  
Gas Supply

The Gairdner Hospital Automatic Pressure Regulator was developed to deliver a constant preset gas pressure for the continuous inflation of infusion pump cuffs or pneumatic tourniquets. It has been found to be economical, safe, reliable and easy to use. The device facilitates both continuous flushing of catheters and rapid intravenous infusions especially during emergency situations. It may also be used in other clinical situations where a continuous gas supply at a preset constant pressure is required.

A SIMPLE AUTOMATIC PRESSURE REGULATOR FOR FILTRATION

Science ◽  
1931 ◽  
Vol 73 (1904) ◽  
pp. 707-709
Author(s):  
E. Leifson
Keyword(s):  
Pressure Regulator ◽  
Automatic Pressure
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