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先導(dǎo)式減壓閥調(diào)壓用的壓縮空氣，一般是由小型直動式減壓閥供給的。若將這個小型直動式減壓閥與主閥合成一體，則稱為內(nèi)部先導(dǎo)式減壓閥。若將它與主閥分離，則稱為外部先導(dǎo)式減壓閥，它可實現(xiàn)遠距離控制。.
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AR625-10-5,SMC先導(dǎo)式減壓閥,smc總代理
順時針旋轉(zhuǎn)手輪，調(diào)壓彈簧9被壓縮，上膜片組件7推動先導(dǎo)閥芯5開啟，輸入氣體通過恒節(jié)流孔4流入上膜片下腔，此氣壓力與調(diào)壓彈簧力相平衡。上膜片下腔與下膜片上腔相通，氣壓推下膜片組件，通過閥桿將主閥芯打開，則有出口壓力。同時，此出口壓力通過反饋孔進入下膜片下腔，與上腔壓力相平衡，以維持出口壓力不變。
用壓縮空氣的作用力代替調(diào)壓彈簧力以改變出口壓力的閥，稱為先導(dǎo)式減壓閥。它調(diào)壓時操作輕便，流量特性好，穩(wěn)壓精度高，壓力特性也好，適用于通徑較大的減壓閥。
先導(dǎo)式減壓閥調(diào)壓用的壓縮空氣，一般是由小型直動式減壓閥供給的。若將這個小型直動式減壓閥與主閥合成一體，則稱為內(nèi)部先導(dǎo)式減壓閥。若將它與主閥分離，則稱為外部先導(dǎo)式減壓閥，它可實現(xiàn)遠距離控制。
先導(dǎo)式減壓閥使用注意
1）普通型減壓閥，出口壓力不要超過進口壓力的85%；精密減壓閥，出口要壓力不要超過進口壓力的90%。輸出壓力不得超過設(shè)定壓力的zui大值。
2）連接配管要充分吹洗。
3）空氣的流動方向按箭頭方向安裝，不得裝反。
4）使用塑料材質(zhì)的減壓閥，應(yīng)避免陽光直射
AR625-10-5,SMC先導(dǎo)式減壓閥,smc總代理
| AR425-02B | AR435-03-56 | AR635-06BG | AR825-F12 |
| AR425-02BG | AR435-03-6 | AR635-06BG1 | AR825-F12BG |
| AR425-02BG1 | AR435-03BG1 | AR635-06G | AR825-F12G |
| AR425-02BG2 | AR435-03BG-R | AR635-06G1 | AR825-F12G-R |
| AR425-02G | AR435-03G | AR635-07-6 | AR825-F14 |
| AR425-02G1 | AR435-03G1 | AR635-08-6 | AR825-F14G |
| AR425-02G2 | AR435-03G2 | AR635-09-6 | AR825-F14G-R |
| AR425-03 | AR435-03G-2 | AR635-10 | AR825-N12BG |
| AR425-03BG | AR435-03-H | AR635-10-6 | AR825-N14G |
| AR425-03BG1 | AR435-04 | AR635-10BG | AR825-N14-X425 |
| AR425-03BG2 | AR435-04-56 | AR635-10G | AR835-12 |
| AR425-03G | AR435-04-6 | AR635-10G1 | AR835-12-5 |
| AR425-03G1 | AR435-04BG | AR635-10G-1 | AR835-12G |
| AR425-03G2 | AR435-04BG-R | AR635-10G2 | AR835-12-H |
| AR425-04 | AR435-04G | AR635-10G-6 | AR835-14 |
| AR425-04BG | AR435-04G1 | AR635-N10G | AR835-14-5 |
| AR425-04BG1 | AR435-04G-1 | AR825-12 | AR835-14G |
| AR425-04BG2 | AR435-04G2 | AR825-12-5 | AR835-14-H |
| AR425-04BG-R | AR435-04-H | AR825-12-6 | AR835-14-R |
| AR425-04G | AR435-04-L | AR825-12BG | AR835-F14 |
| AR425-04G1 | AR625-06 | AR825-12BG-R | AR925-20 |
| AR425-04G2 | AR625-06-5 | AR825-12G | AR925-20-56 |
| AR425-04-R | AR625-06BG | AR825-12G1 | AR925-20-6 |
| AR425-F02 | AR625-06BG1 | AR825-12G2 | AR925-20G |
| AR425-F02B | AR625-06BG2 | AR825-12G-R | AR925-20G1 |
| AR425-F03 | AR625-06BG-R | AR825-12-L | AR925-20G1-L |
| AR435-02 | AR625-06G | AR825-12-X425 | AR925-20G2 |
| AR435-02-56 | AR625-06G1 | AR825-14 | AR925-20G-H |
| AR435-02-6 | AR625-06G2 | AR825-14-5 | AR925-20G-L |
| AR435-02B | AR625-10 | AR825-14G | AR925-20G-X425 |
| AR435-02BG | AR625-10-5 | AR825-14G1 | AR925-20-X218 |
| AR435-02BG-1 | AR625-10BG | AR825-14G2 | AR925-F20 |
| AR435-02BG2 | AR625-10BG1 | AR825-14G-2 | AR925-F20G-R |
| AR435-02BG-2 | AR625-10BG2 | AR825-14G-3 | AR925-N20G |
| AR435-02BG-L | AR625-10G | AR825-14G-H | AR925-N20G-R |
| AR435-02G | AR625-10G1 | AR825-14G-R | AR935-20 |
| AR435-02G1 | AR625-10G2 | AR825-14-L | AR935-20G |
| AR435-02G2 | AR625-10G-R | AR825-14P | AR935-20G-R |
| AR435-02-H | AR625-F10 | AR825-14-X219 | AR935-20G-X230 |
| AR435-03 | AR635-06 | AR825-14-X425 | AR935-N20G |