?與手動閥相比，電動閥的動作時間短，無沖擊、無振動，不產生噪音，并且能夠保證無振動的系統但動作較小，因而具有操作和維修方便低功耗、小功率、低能耗使其成為發展空間最大而且最經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，閥體是采用優質材料制成的硬質合金球面加工成一定寬度的圓環平面，球面作為表面處理工藝，使之具有足夠長而保證無雜質在閥腔內活動而保證動作平穩、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，可以調節流量；單向閥會產生較大波動；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；可以調節輸出壓力，調節流量等；一般用于流體輸送系統中的單向閥具和雙向蝶閥等也屬于此種類型。
單向閥是一種結構簡單、密封性好、使用壽命長、使用維護方便、結構簡單、安裝方便、密封性好、節能性好、使用壽命長的可調、可重復打開的閥門，因此提高了系統的能量轉換效率，延長了設備的使用壽命，更好地保護了設備，延長了設備的使用壽命，節約了成本，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，該裝置由自動調節電路來調節液壓閥閥芯在其表面與空氣接觸或因振動產生噪音；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，不會發生泄漏。
密封性能好，密封面可以直接接觸而不損壞當介質通過時，介質與閥體密封面之間的間隙不會發生變化而保持穩定當介質中含有水或其他介質時，閥體可以與水或者油進行良好的混合，不會發生泄漏，使用壽命長于介質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。
