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(jìn)口零壓啟動(dòng)電磁閥亦稱之為無壓差電磁閥、分步直動(dòng)式電磁閥，是直動(dòng)式與先導(dǎo)式結(jié)合的一種閥，通常用于中、大口徑，工作壓力零至低壓力的管道系統(tǒng)中Retz
zero pressure start solenoid valve, also known as no pressure difference
solenoid valve or step-by-step direct action solenoid valve, is a type of valve
that combines direct action and pilot type. It is usually used in medium and
large caliber pipeline systems with zero to low working pressure
進(jìn)口零壓啟動(dòng)電磁閥工作原理--
常閉式：當(dāng)線圈通電時(shí)，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(dòng)先導(dǎo)閥芯連動(dòng)主活塞，閥口打開；斷電時(shí)，靠彈簧復(fù)位關(guān)閉先導(dǎo)孔，主活塞上腔增壓，推動(dòng)主活塞向下移動(dòng)，閥關(guān)閉。
Normally
closed type: 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,
opening the valve port; When the power is cut 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 valve is closed
常開式：與常閉式相反
Normally
open: opposite to normally closed
進(jìn)口零壓啟動(dòng)電磁閥結(jié)構(gòu)特點(diǎn)--
有活塞式結(jié)構(gòu)和膜片式結(jié)構(gòu)
零壓啟動(dòng)、低壓結(jié)合，性能穩(wěn)定
塑封線圈，提高閥的可靠性并能防水、防潮，不易燒毀，線圈不易燒毀
線圈啟動(dòng)閥芯同時(shí)拉動(dòng)活塞，在零壓時(shí)都能正常工作;
長時(shí)間停止動(dòng)作重新啟動(dòng)，動(dòng)作同樣靈敏，使用壽命長
進(jìn)口零壓啟動(dòng)電磁閥選型參數(shù)--
閥體材質(zhì)：黃銅或不銹鋼
接口尺寸：G1/8-G1"或F1/2-F4"
工作壓力：0-1.6MPa
適用介質(zhì)：中性，氣態(tài)或液態(tài)流體
介質(zhì)粘度：≤21mm2/s
介質(zhì)溫度：-10~+80℃(+350℃,可選)
環(huán)境溫度：-10~+50℃
密封材質(zhì)：NBR(標(biāo)準(zhǔn))，FPM、EPDM(可選)
標(biāo)準(zhǔn)電壓:
AC:220V(50/60Hz) DC:24V
防護(hù)性能：防水、****（DⅡCT5、ExdⅡCT5、ExmbⅡCT4、ExdⅡCT4）、防腐。
防護(hù)等級(jí)：IP67、IP65