品牌：RETZ瑞茨/我們一直致力于流體控制領(lǐng)域的持續(xù)創(chuàng)新，始于2005……進口分步直動式電磁閥是一種直動式和先導(dǎo)式相結(jié)合的原理，結(jié)構(gòu)分為活塞式和膜片式，適于用氣、水、油、蒸汽、燃氣、腐蝕性流體的控制The
imported step-by-step direct acting solenoid valve is a combination of direct
acting and pilot operated principles, with a structure divided into piston type
and diaphragm type, suitable for controlling gas, water, oil, steam, gas, and
corrosive fluids
工作原理
常閉：當線圈通電時，電磁力先打開先導(dǎo)孔，主閥活塞上腔壓力下降，從而利用壓差和電磁力吸動先導(dǎo)閥芯連動主活塞，電磁閥打開。 當線圈斷電時，靠彈簧復(fù)位關(guān)閉先導(dǎo)孔，主活塞上腔增壓，推動主活塞向下移動，電磁閥關(guān)閉。
Normally
closed: When the coil is energized, the electromagnetic force first opens the
pilot hole, causing the pressure in the upper chamber of the main valve piston
to decrease. Therefore, the pressure difference and electromagnetic force are
used to attract the pilot valve core and connect the main piston, causing the
electromagnetic valve to open. When the coil is powered off, the pilot hole is
closed by spring reset, and the upper chamber of the main piston is
pressurized, pushing the main piston to move downwards, and the solenoid valve
is closed.
常開：常開與常閉相反 Normally open: The opposite of normally open and normally closed
選型參數(shù)范圍Selection
parameter range：
產(chǎn)品規(guī)格：DN25-DN200（中大口徑）
閥體材質(zhì)：鑄鐵、不銹鋼304、316。（鑄鐵不能用在腐蝕流體上）
適用介質(zhì)：氣、水、油、蒸汽、燃氣、腐蝕性流體。
介質(zhì)溫度：0-100-300℃。
介質(zhì)粘度：小于50CSt （大于50時需定制）。
防護性能：防水、****（Exd
IICT5）、防腐。
閥芯材質(zhì)： 均為不銹鋼。
接線方式：接線座式、引線式、插頭式。
控制方式：常閉。
電源電壓：DC12~127V；AC36~380V。
連接方式：內(nèi)螺紋、法蘭、(外螺紋和特殊接口可定做或加轉(zhuǎn)接頭)
泄 漏 量：零
備注：特殊型可定制。
注：出口端壓力大于進口端壓力時，介質(zhì)會反向?qū)�。可安裝止回閥或訂制帶止回功能的電磁閥