21A3KT30直動膜片式電磁閥ODE**特點
For a correct operation of the solenoid valve, and to avoid
a quick wear of the diaphragm, it is advisable that, once
starting the valve closing, the actual flow isn’t higher than the Kv (i.e.: flow rate through the
valve with a pressure loss of 1 bar).
For this reason, should the inlet pressure when the valve is open, be higher than 1 bar, it is
not advisable the use of the valve itself with free outlet, i.e. without an outlet restriction bringing the pressure drop to the value of 1 bar.
Moreover, particular attention must be paid in designing the hydraulic circuit to the problem
of water hammering which could cause overpressures such as to lacerate the diaphragm or
damage other parts of the solenoid valve.
日本NABTESCO；CHELIC氣立可;意大利Metal Work麥特沃克；美國ROSS；德國SCHUNK雄克；美國WILKERSON；法國樂可利（LEGRIS）;日本TACO；日本FLOBAL;KINECHEKS美國白馬；韓國YTC；日本甲南KONAN電磁閥； 意大利OMAL；德國EBRO；臺灣新恭SHAKO；韓國YSC；韓國TKC；臺灣FONTAL；日本NOK（NEW-ERA）；意大利M&M電磁閥；意大利CEME；德國SPECK；德國BAR;德國COAX；德國SAMSON；日本HIROSE廣瀨；德國G.Bee電磁閥；德國KUHNKE昆科；德國RECTUS利達(dá)時；
In this family of solenoid valves there must be a minimum
pressure difference between the inlet and outlet pipes to
ensure correct functioning of the solenoid valve.
However, an excessive pressure difference between inlet
and outlet, as with 2 way normally open direct acting solenoid valves, causes an increase in the force required to
open the pilot orifice, so if this pressure difference is
greater than the maximum value for which the solenoid
valve has been designed, the latter may not reopen even
when the coil is not energized.
液壓類：德國BOSCH-REXROTH博士力士樂；美國VICKERS威格士；美國PARKER派克；日本YUKEN油研；日本不二越NACHI；德國HYDAC賀德克；美國DENISON丹尼遜 ；意大利ATOS；德國FIUTEC；意大利馬祖奇MARZOCCHI;意大利迪普馬Duplomatic；日本TAIYO太陽鐵工；日本大金DAIKIN；日本TOYOOKI豐興；瑞士萬福樂Wandfluh； 德國HAWE哈威；日本TOKYO KEIKI (TOKIMEC )東京計器；瑞士BUCHER布赫；美國MOOG；丹麥丹佛斯DANFOSS；日本島電SHIMADEN；美國SUN 海德福斯。
2 way normally open solenoid valves with pilot control have an inlet pipe and a outlet pipe.
Functioning of these solenoid valves is, as regards movement of the diaphragm, identical to that of 2 way normally
closed solenoid valves with pilot control except that in
place of the normally closed kit a normally open kit is
mounted to open and close the pilot orifice. So in this case
with the coil energized the pilot orifice is closed and the
diaphragm therefore in such a position as to close the main
orifice, whereas with the coil not energized the pilot orifice
is open, thus cau-sing the main orifice to open.

21A3KT30直動膜片式電磁閥ODE**特點