What is the tolerance fit between the valve body and spool?
Before the 10 pass through the valve, as if my master said, probably between 0.005-0.008.
This problem to specific problems specific analysis, such as the ten way diameter valve clearance clearance must be smaller than the twenty path, because they two kinds of valve by the friction is not the same, the valve stem reset is not the same. Basically, this connection is between 0.007-0.0012mm, and this connection is sure to meet the requirements of the disclosure. Upstairs said the gap, I really dare not praise ah! What kind of factory can produce that kind of product?. There are many other problems associated with the clearance. The shape of the valve stem, position, and so on.
[1] when the spool diameter of less than 20mm, with clearance is 0.007mm-0.015mm., when the spool diameter is greater than 20mm, the clearance is 0.015mm-0.025mm.[2]: hydraulic valve, hydraulic valve is a pressure oil operation automation components, it is controlled by the pressure valve pressure oil, and usually with the use of electromagnetic valve combination, can be used for remote control station of oil and gas and water pipeline system off. Often used in clamping, control, lubrication and other oil circuit. There are direct and pilot type points, and more use of pilot type. As can be divided into manual, electric and hydraulic control valve is a pressure oil operation automatic element control method, which is controlled by the pressure valve pressure oil, and usually with the use of electromagnetic valve combination, can be used for remote control station of oil and gas and water pipeline system off.
