?與手動閥相比，電動閥的動作時間短，無沖擊、無振動，不產(chǎn)生噪音，并且能夠保證無振動的系統(tǒng)但動作較小，因而具有操作和維修方便低功耗、小功率、低能耗使其成為發(fā)展空間最大而且最經(jīng)濟的手動式和電動裝置閉口鎖塊：又稱滑塊或閘塊、閉鎖塊體、球、蝶閥、雙偏心蝶閥。
它是由滑塊、閥體、密封墊圈、球面等組成其中球面與閥蓋接觸部分采用橡膠制成，閥體是采用優(yōu)質(zhì)材料制成的硬質(zhì)合金球面加工成一定寬度的圓環(huán)平面，球面作為表面處理工藝，使之具有足夠長而保證無雜質(zhì)在閥腔內(nèi)活動而保證動作平穩(wěn)、無振動、噪聲小、密封良好、操作簡單使用方便等特性。
目前主要用于閥門上和控制換向閥以及流體控制等方面1閥門主要控制元件及其安裝閥門可分為單向閥、雙向閥共三種：單向閥中裝有閥座，可以調(diào)節(jié)流量；單向閥會產(chǎn)生較大波動；可以在沒有高壓泄漏，又允許低壓泄漏，且壓力為零等工況下工作；可以調(diào)節(jié)輸出壓力，調(diào)節(jié)流量等；一般用于流體輸送系統(tǒng)中的單向閥具和雙向蝶閥等也屬于此種類型。
單向閥是一種結(jié)構(gòu)簡單、密封性好、使用壽命長、使用維護方便、結(jié)構(gòu)簡單、安裝方便、密封性好、節(jié)能性好、使用壽命長的可調(diào)、可重復(fù)打開的閥門，因此提高了系統(tǒng)的能量轉(zhuǎn)換效率，延長了設(shè)備的使用壽命，更好地保護了設(shè)備，延長了設(shè)備的使用壽命，節(jié)約了成本，減少了污染、噪音和粉塵污染，提高了工作效率，減少了維護時間。
1、使用壽命長：該裝置能適應(yīng)不同液體，具有無泄漏、可多次使用、不需要潤滑等特點；另外，該裝置由自動調(diào)節(jié)電路來調(diào)節(jié)液壓閥閥芯在其表面與空氣接觸或因振動產(chǎn)生噪音；在正常工作情況下工作不需要停機 閥體、密封件等元件的制造精度高，安裝牢固，不會發(fā)生泄漏。
密封性能好，密封面可以直接接觸而不損壞當(dāng)介質(zhì)通過時，介質(zhì)與閥體密封面之間的間隙不會發(fā)生變化而保持穩(wěn)定當(dāng)介質(zhì)中含有水或其他介質(zhì)時，閥體可以與水或者油進行良好的混合，不會發(fā)生泄漏，使用壽命長于介質(zhì)的高溫下或腐蝕性氣體中。
特別適用于密封面型式多樣，如閘式（閘閥）、蝶形、柱塞蝶形、旋轉(zhuǎn)式等 90-L-250-KP-1-BB-80-T-4-C8-K-03-NNN-32-32-28 90L250KP1BB80T4C8K03NNN323228 90-L-250-KP-1-BC-80-T-4-C8-K-03-NNN-32-32-28 90L250KP1BC80T4C8K03NNN323228 90L250-KP-1-BC-80-T-4-F1-K-05-NNN-35-35-24 90L250KP1BC80T4F1K05NNN353524 90-L-250-KP-1-BC-80-T-4-F1-K-05-NNN-35-35-24 90L250KP1BC80T4F1K05NNN353524 90L250-KP-1-BC-80-T-4-F1-K-05-NNN-35-35-30 90L250KP1BC80T4F1K05NNN353530 90L250-KP-1-CD-80-T-3-F1-K-03-NNN-35-35-24 90L250KP1CD80T3F1K03NNN353524 90-L-250-KP-1-CD-80-T-3-F1-K-03-NNN-35-35-24 90L250KP1CD80T3F1K03NNN353524 90L250-KP-1-CD-80-T-4-F1-J-03-NNN-32-32-24 90L250KP1CD80T4F1J03NNN323224 90-L-250-KP-1-CD-80-T-4-F1-J-03-NNN-32-32-24 90L250KP1CD80T4F1J03NNN323224 90-L-250-KP-2-CD-80-T-3-C8-K-02-NNN-32-32-24 90L250KP2CD80T3C8K02NNN323224 90-L-250-KP-2-CD-80-T-3-C8-K-03-NNN-32-32-24 90L250KP2CD80T3C8K03NNN323224 90L250-KP-2-CD-80-T-3-C8-K-04-NNN-32-32-24 90L250KP2CD80T3C8K04NNN323224 90-L-250-KP-2-CD-80-T-3-C8-K-04-NNN-32-32-24 90L250KP2CD80T3C8K04NNN323224 90-L-250-KP-2-EG-80-T-3-C8-K-03-NNN-32-32-24 90L250KP2EG80T3C8K03NNN323224 90-L-250-KP-2-EG-80-T-3-C8-K-04-NNN-32-32-24 90L250KP2EG80T3C8K04NNN323224 90L250-KP-2-EG-80-T-4-C8-K-00-NNN-32-32-24 90L250KP2EG80T4C8K00NNN323224 90-L-250-KP-2-EG-80-T-4-C8-K-00-NNN-32-32-24 90L250KP2EG80T4C8K00NNN323224 90-L-250-KP-2-NN-80-D-4-C8-L-05-NNN-35-35-30 90L250KP2NN80D4C8L05NNN353530 90L250-KP-5-AB-80-T-3-C8-K-03-NNN-35-35-24 90L250KP5AB80T3C8K03NNN353524 90-L-250-KP-5-AB-80-T-3-C8-K-03-NNN-35-35-24 90L250KP5AB80T3C8K03NNN353524 90L250-KP-5-AB-80-T-3-F1-J-00-NNN-35-35-20 90L250KP5AB80T3F1J00NNN353520 90-L-250-KP-5-AB-80-T-3-F1-J-00-NNN-35-35-20 90L250KP5AB80T3F1J00NNN353520 90L250-KP-5-AB-80-T-3-F1-K-03-NNN-32-32-24 90L250KP5AB80T3F1K03NNN323224 90-L-250-KP-5-AB-80-T-3-F1-K-03-NNN-32-32-24 90L250KP5AB80T3F1K03NNN323224 90L250-KP-5-AB-80-T-4-F1-K-03-NNN-29-29-24 90L250KP5AB80T4F1K03NNN292924 90L250-KP-5-BC-80-S-3-F1-K-03-NNN-38-38-24 90L250KP5BC80S3F1K03NNN383824 90-L-250-KP-5-BC-80-S-3-F1-K-03-NNN-38-38-24 90L250KP5BC80S3F1K03NNN383824 90L250-KP-5-BC-80-S-4-F1-J-03-NNN-42-42-24 90L250KP5BC80S4F1J03NNN424224 90-L-250-KP-5-BC-80-S-4-F1-J-03-NNN-42-42-24 90L250KP5BC80S4F1J03NNN424224 90L250-KP-5-BC-80-T-3-C8-K-03-NNN-35-35-24 90L250KP5BC80T3C8K03NNN353524 90-L-250-KP-5-BC-80-T-3-C8-K-03-NNN-35-35-24 90L250KP5BC80T3C8K03NNN353524 90L250-KP-5-BC-80-T-3-F1-J-03-NNN-38-38-24 90L250KP5BC80T3F1J03NNN383824 90-L-250-KP-5-BC-80-T-3-F1-J-03-NNN-38-38-24 90L250KP5BC80T3F1J03NNN383824 90L250-KP-5-BC-80-T-3-F1-J-03-NNN-42-42-24 90L250KP5BC80T3F1J03NNN424224 90-L-250-KP-5-BC-80-T-3-F1-J-03-NNN-42-42-24 90L250KP5BC80T3F1J03NNN424224 90L250-KP-5-BC-80-T-3-F1-K-03-NNN-35-14-24 90L250KP5BC80T3F1K03NNN351424 90-L-250-KP-5-BC-80-T-3-F1-K-03-NNN-35-14-24 90L250KP5BC80T3F1K03NNN351424 90L250-KP-5-BC-80-T-4-F1-J-03-NNN-35-35-24 90L250KP5BC80T4F1J03NNN353524 90-L-250-KP-5-BC-80-T-4-F1-J-03-NNN-35-35-24 90L250KP5BC80T4F1J03NNN353524 90L250-KP-5-BC-80-T-4-F1-K-03-NNN-35-14-24 90L250KP5BC80T4F1K03NNN351424 90-L-250-KP-5-BC-80-T-4-F1-K-03-NNN-35-14-24 90L250KP5BC80T4F1K03NNN351424 90L250-KP-5-CD-80-S-3-C8-K-03-NNN-35-35-24 90L250KP5CD80S3C8K03NNN353524 90-L-250-KP-5-CD-80-S-3-C8-K-03-NNN-35-35-24 90L250KP5CD80S3C8K03NNN353524 90L250-KP-5-CD-80-S-3-C8-K-09-NNN-35-35-24 90L250KP5CD80S3C8K09NNN353524 90-L-250-KP-5-CD-80-S-3-C8-K-09-NNN-35-35-24 90L250KP5CD80S3C8K09NNN353524 90L250-KP-5-CD-80-T-3-C8-J-03-NNN-35-35-24 90L250KP5CD80T3C8J03NNN353524 90-L-250-KP-5-CD-80-T-3-C8-J-03-NNN-35-35-24 90L250KP5CD80T3C8J03NNN353524 90L250-KP-5-CD-80-T-4-C8-K-03-NNN-29-29-24 90L250KP5CD80T4C8K03NNN292924 90-L-250-KP-5-CD-80-T-4-C8-K-03-NNN-29-29-24 90L250KP5CD80T4C8K03NNN292924 90L250-KP-5-CD-80-T-4-F1-J-03-NNN-32-32-24 90L250KP5CD80T4F1J03NNN323224 90-L-250-KP-5-CD-80-T-4-F1-J-03-NNN-32-32-24 90L250KP5CD80T4F1J03NNN323224 90L250-KP-5-CD-80-T-4-F1-K-03-NNN-29-29-24 90L250KP5CD80T4F1K03NNN292924 90L250-KP-5-CD-80-T-4-F1-K-03-NNN-38-38-24 90L250KP5CD80T4F1K03NNN383824 90-L-250-KP-5-CD-80-T-4-F1-K-03-NNN-38-38-24 90L250KP5CD80T4F1K03NNN383824 90L250-KP-5-EF-80-S-4-F1-J-03-NNN-20-20-24 90L250KP5EF80S4F1J03NNN202024 90-L-250-KP-5-EF-80-S-4-F1-J-03-NNN-20-20-24 90L250KP5EF80S4F1J03NNN202024 90L250-KP-5-EF-80-T-3-C8-J-03-NNN-38-38-24 90L250KP5EF80T3C8J03NNN383824 90-L-250-KP-5-EF-80-T-3-C8-J-03-NNN-38-38-24 90L250KP5EF80T3C8J03NNN383824 90L250-KP-5-NN-80-S-4-F1-K-03-NNN-26-26-24 90L250KP5NN80S4F1K03NNN262624 90-L-250-KP-5-NN-80-S-4-F1-K-03-NNN-26-26-24 90L250KP5NN80S4F1K03NNN262624 90L250-KP-5-NN-80-T-3-C8-K-03-NNN-29-29-24 90L250KP5NN80T3C8K03NNN292924 90-L-250-KP-5-NN-80-T-3-C8-K-03-NNN-29-29-24 90L250KP5NN80T3C8K03NNN292924 90L250-KP-5-NN-80-T-3-C8-K-03-NNN-35-35-24 90L250KP5NN80T3C8K03NNN353524 90-L-250-KP-5-NN-80-T-3-C8-K-03-NNN-35-35-24 90L250KP5NN80T3C8K03NNN353524 90L250-KP-5-NN-80-T-3-F1-J-03-NNN-35-35-24 90L250KP5NN80T3F1J03NNN353524 90-L-250-KP-5-NN-80-T-3-F1-J-03-NNN-35-35-24 90L250KP5NN80T3F1J03NNN353524 90-L-250-KP-5-NN-80-T-3-F1-K-03-NNN-42-42-24 90L250KP5NN80T3F1K03NNN424224 90L250-KP-5-NN-80-T-4-C8-J-04-NNN-26-26-24 90L250KP5NN80T4C8J04NNN262624 90-L-250-KP-5-NN-80-T-4-C8-J-04-NNN-26-26-24 90L250KP5NN80T4C8J04NNN262624 90L250-KP-5-NN-80-T-4-C8-K-03-NNN-26-26-28 90L250KP5NN80T4C8K03NNN262628 90-L-250-KP-5-NN-80-T-4-C8-K-03-NNN-26-26-28 90L250KP5NN80T4C8K03NNN262628 90L250-KP-5-NN-80-T-4-C8-K-03-NNN-32-32-28 90L250KP5NN80T4C8K03NNN323228 90-L-250-KP-5-NN-80-T-4-C8-K-03-NNN-32-32-28 90L250KP5NN80T4C8K03NNN323228 90L250-KP-5-NN-80-T-4-F1-J-03-NNN-35-14-24 90L250KP5NN80T4F1J03NNN351424 90-L-250-KP-5-NN-80-T-4-F1-J-03-NNN-35-14-24 90L250KP5NN80T4F1J03NNN351424 90L250-KP-5-NN-80-T-4-F1-J-03-NNN-35-35-24 90L250KP5NN80T4F1J03NNN353524 90-L-250-KP-5-NN-80-T-4-F1-J-03-NNN-35-35-24 90L250KP5NN80T4F1J03NNN353524 90L250-KP-5-NN-80-T-4-F1-K-03-NNN-29-29-24 90L250KP5NN80T4F1K03NNN292924 90-L-250-KP-5-NN-80-T-4-F1-K-03-NNN-29-29-24 90L250KP5NN80T4F1K03NNN292924 90L250-KP-5-NN-80-T-4-F1-K-03-NNN-42-42-24 90L250KP5NN80T4F1K03NNN424224 90-L-250-KP-5-NN-80-T-4-F1-K-03-NNN-42-42-24 90L250KP5NN80T4F1K03NNN424224 90-L-250-KP-5-NN-80-T-4-F1-K-05-NNN-32-32-24 90L250KP5NN80T4F1K05NNN323224 90L250-KP-5-NN-80-T-4-F1-K-05-NNN-35-35-24 90L250KP5NN80T4F1K05NNN353524 90-L-250-KP-5-NN-80-T-4-F1-K-05-NNN-35-35-24 90L250KP5NN80T4F1K05NNN353524。
