IL40120A - System for proportional evaluation of quantitative flow of fluids - Google Patents

Claims (5)

CLAIMS / y -4- Appln.No. C L A I M S:

1. In a system for the proportional evaluation of quantitative fluid flov between a supply of fluid and a point of usage through a fluid supply system including at least one supply line, the improvement comprising a fluid flov meter, or. connection within said supply line; bypass line means for fluid connection to said supply line upstream and downstream of said meter for bypassing fluid flow around the meter and allowing fluid to flow directly to the point of usage without passing through the meter; fluid flow e.g. diaphragm valve regulating means /connected within said bypass line means for controlling the flow of fluid within said bypass line means; and fluid pressure sensing means for connection to said fluid supply system upstream from said meter and controlling operation of said fluid flow regulating means in response only to fluid pressure upstream of said meter for increasing the proportional fluid flow through said bypass line with increasing upstream fluid pressure and decreasing the proportional fluid flow through said bypass line means with decreasing upstream fluid pressure* the position of the regulating means &ifQ^ta!<»g»x^3^^ being arrested by means which are actuated by a Sensor mounted in the luid line near the point of consumption.

2. * A system as claimed in claim 1 , wherein the sensor is constituted by a flap hingedly mounted in the fluid line*

3. A system as claimed in claim 2, wherein the flap actuates two brake shoes aligned at diametrically opposite sides of the valve stem within the fluid line* Appln. No. 4012θΛ

4. A system as claimed in claim 2, wherein the flap actuates a flap valve adapted to close the inlet to the regulating means by-pass line which is in communication with the d &&Y& fiK

5. A system substantially as hereinbefore described and illustrated in the accompanying drawings.