26-12-2017, 12:32 PM
(This post was last modified: 26-12-2017, 12:45 PM by Colin Wilks.)
(25-12-2017, 04:27 PM)Steve Bryant Wrote:(24-12-2017, 05:48 PM)Bryan Norfolk Wrote: Here is an advert for the petrol reserve item shown in one of Tony Betts pictures.
Any chance of someone giving an explanation on how it works? i think I might know but would like to know for certain.
Thanks Stephen.
I certainly don't know for certain, but my interpretation is that the swivel tap is drilled at 90 degrees (in the direction of points B and A as illustrated).
The points A and C duplicate the union fittings connecting the tank to the engine, so this device is installed inline at that point.
In normal operation fuel flows from point A up towards point B and back down the other tube, to exit to the engine at point C. The height of this loop is the reserve.
In reserve operation fuel flows directly from point A to point C (i.e. as it did before the device was installed).
The narrow gauge tube at point B terminates on a breather on top of the tank so as to prevent siphoning once the tank level falls below the top of the loop below point B.
Happy Boxing Day! (As you may tell, I have been escaping the family festivities for a short while).