進口活塞式減壓閥概述

進口活塞式減壓閥是指采用活塞作為閥瓣，通過調(diào)節(jié)，將進口壓力減至某一需要的出口壓力，并依靠介質(zhì)本身的能量，使出口壓力自動保持穩(wěn)定的減壓閥。

The piston valve refers to the use of the piston as a valve, by adjusting the inlet pressure is reduced to a desired outlet pressure, and rely on the energy of the medium itself automatically to maintain the stability of the pressure reducing valve, so that the outlet pressure.

主要分為進口彈簧活塞式減壓閥和進口膜片活塞式減壓閥，可用于蒸汽、水、氣體，主要產(chǎn)品進口膜片活塞式減壓閥、進口彈簧活塞式減壓閥，進口先導(dǎo)活塞式氣體減壓閥。

用途和主要性能：本閥適用于水、蒸汽、空氣介質(zhì)管路上，通過調(diào)節(jié)使進口壓力降低至某一需要的出口壓力，當(dāng)進口壓力與流量有變化時，靠介質(zhì)本身的能量自動保持出口壓力在一定范圍內(nèi)，但進口壓力和出口壓力之差必須≥0.2MPA/CM 

工作原理及結(jié)構(gòu)：減壓閥出廠時，調(diào)節(jié)彈簧處于未壓縮狀態(tài),此時主閥瓣和付閥瓣處于關(guān)閉狀態(tài),使用時按順時針轉(zhuǎn)動調(diào)節(jié)螺釘,壓縮調(diào)節(jié)彈簧,使膜瓣移頂開付閥瓣,介質(zhì)由a孔通過付閥座到b孔進入活塞上方,活塞在介質(zhì)壓力的作用下,向下移動推動主閥瓣離開主閥座,使介質(zhì)流向閥后.同時由c孔進入膜片下方,當(dāng)閥后壓力超過調(diào)定壓力時,推動膜片上移壓縮調(diào)節(jié)彈簧,付閥瓣隨之向關(guān)閉方向移動,使流入活塞上方的介質(zhì)減小,壓力也隨之下降,此時的主閥瓣在主閥瓣彈簧力的推動上下移,使主閥瓣與主閥座的間隙減小,介質(zhì)流量也隨之減小,使閥后壓力也隨之下降到新的平衡,反之當(dāng)閥后壓力低于調(diào)定壓力時,主閥瓣與主閥座的間隙增大,介質(zhì)流量也隨之增加,使閥后壓力也隨之增高達到新的平衡. 

產(chǎn)品特征：

■壓力范圍：1Kp-50Mpa

■口徑：DN10-DN500

■閥體材質(zhì)：鑄鐵，黃銅，鑄鋼，不銹鋼

■連接方式：法蘭，絲口，焊接

■溫度：-30℃-600℃

■介質(zhì)：水，蒸汽，氣體等

進口減壓閥

進口減壓閥，進口減壓閥品牌，美國進口減壓閥，進口調(diào)壓閥，進口穩(wěn)壓閥，進口可調(diào)式減壓閥進口減壓閥（Pressure reducing valve）是指采用控制閥體內(nèi)的啟閉件的開度來調(diào)節(jié)介質(zhì)的流量，將介質(zhì)的壓力降低，同時借助閥后壓力的作用調(diào)節(jié)啟閉件的開度，使閥后壓力穩(wěn)定在一定壓力范圍內(nèi)的閥門。

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