. The encyclopedia of practical horticulture; a reference system of commercial horticulture, covering the practical and scientific phases of horticulture, with special reference to fruits and vegetables;. Gardening; Fruit-culture; Vegetable gardening. Fig. 12. (7) A tank filler whicli is so de- signed that it can be attached permanently to the sprayer tank. it will not take care of the overflow when both leads of hose are shut off. A plunger type of relief valve, which appeared on the market recently, is very sensitive to pressure variation and ap- parently has all ot the requisites of dur- ab
. The encyclopedia of practical horticulture; a reference system of commercial horticulture, covering the practical and scientific phases of horticulture, with special reference to fruits and vegetables;. Gardening; Fruit-culture; Vegetable gardening. Fig. 12. (7) A tank filler whicli is so de- signed that it can be attached permanently to the sprayer tank. it will not take care of the overflow when both leads of hose are shut off. A plunger type of relief valve, which appeared on the market recently, is very sensitive to pressure variation and ap- parently has all ot the requisites of dur- ability. When the pressure becomes great enough to overcome the forcing of a spring, the plunger is raised, uncover- ing a row of holes in the wall of the sleeve, through which the liquid escapes back into the tank. Fig. 9 gives a de- tailed view of its construction. Several forms of pressure regulators, on some power and traction machines, automatically throw the pump out of gear, saving power and obviating trouble and danger when all of the pump's capacity is not utilized. This also effects a great saving in wear and prevents breaking the machine or straining it unnecessarily. Another form of regulator, which is placed on the suction pipe, shuts off the supply when the pressure becomes suffi- cient to raise the plunger against the spring. This allows the engine to run free, excepting for the vacuum created by the pump in pulling against a reduced opening or shut-off suction pipe, the ex- penditure of power and the wear of the machine being greatly lessened by this little device. A special type of pressure regulator, which is placed between the pump and the air chamber, is operated by the liquid, under pressure, raising a diaphram against the spring regulator. The rod attached to the diaphram lifts the ball in the lower valve box, and the upper valve closes automatically. This retains the pressure in the air chamber and al- lows the liquid supplied by the pump to. Fig. 13. (8) A
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Keywords: ., bookcentury1900, booksubjectfruitculture, booksubjectgardening
