技術(shù)參數(shù)日本原裝YUKEN電液換向閥
上海乾拓貿(mào)易有限公司
：楊江玲
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Low Pressure Drop As the pressure drop of each size of the valve becomes minimal,
the more of energy saving of the equipment is possible.
Easy Change of Pilot and Drain System The change of the pilot from external to internal
The three advantages of them are as mentioned below:- Since surge voltage can be controlled to a very low figure,
which can be used by connecting directly to the AC power source. They have, like other DC solenoids,
such advantages that the sound in on-off operation is quite low and the coils are hardly burnt out
even if the spool is stuck at the half way of its changeover for contaminant parti-cles etc.
Moreover, they can be used almost permanently without being affected by a surge voltage from the outside.
Thus, they are the solenoids of high reliability and durability.
AC Solenoids 50-60 Hz common service solenoids do not require rewiring when the applied frequency is changed.
DC Solenoids (Reputable K-Series) These DC solenoids have surge absorbers for K-series functions.
by putting on or removing the relevant plug on the valve.
These valves perform a change over of spool by hydraulic pilot and shift the direction of oil flow.
electric control devices, such as a computer, can be used without any interference like noise.
There being no spark between contacts, the life of the relay becomes longer.
When a solenoid is energised the pilot valve directs the flow to move the spool of the slave valve,
Thease valves are composed of a solenoid operated pilot valve and a pilot operated slave valve.
" 06" can provide 500 L/min (132 U.S.GPM) and "10" can provide 1100 L/min (291 U.S.GPM)
in the maximum flow respectively and they can also withstand s uch a high pressure
as 31.5 Mpa {4570 PSI} as the maximum operating pressure. With these features of high
pressure and high flow, the valves can make the size or configuration of the equipment compact.
Time lag for spool return after de-energisation of the solenoid is very short.
RType Solenoids These are rectifier and surge absorber incorporated direct current solenoids
These valves may be used to manually shift the spool position and change the direction of oil flow.
In these valves, the nominal size "04" can provide 300 L/min (79.3 U.S.GPM),
and the change of the drain f rom internal to external or viceversa can be done easily
thus changing the direction of flow in the hydraulic circuit.
The solenoid connectors are conform to the international standard ISO 4400
(Fluid power systems and componentsThree-pin electrical plug connectors-Characteristics and requirements).
The main ports conform to ISO 4401-AC-05-4-A. The pilot and drain ports conform to the ISO.
技術(shù)參數(shù)日本原裝YUKEN電液換向閥
