派克直動(dòng)式比例溢流閥/美國(guó)PARKER
定壓溢流作用:在定量泵節(jié)流調(diào)節(jié)系統(tǒng)中,
定量泵提供的是恒定流量。當(dāng)系統(tǒng)壓力增大時(shí),
會(huì)使流量需求減小。此時(shí)溢流閥開(kāi)啟,使多余流量溢回油箱,
保證溢流閥進(jìn)口壓力,即泵出口壓力恒定(閥口常隨壓力波動(dòng)開(kāi)啟)。
安全保護(hù)作用:系統(tǒng)正常工作時(shí),閥門(mén)關(guān)閉。只有負(fù)載超過(guò)規(guī)定的極限
(系統(tǒng)壓力超過(guò)調(diào)定壓力)時(shí)開(kāi)啟溢流,進(jìn)行過(guò)載保護(hù),
使系統(tǒng)壓力不再增加(通常使溢流閥的調(diào)定壓力比系統(tǒng)zui高工作壓力高10%~20%)。
實(shí)際應(yīng)用中一般有:作卸荷閥用,作遠(yuǎn)程調(diào)壓閥,
作高低壓多級(jí)控制閥,作順序閥,用于產(chǎn)生背壓(串在回油路上)。
PARKER221G2130 131K64 131K63PARKER221G2131 131K6450 131K6350PARKER221G2136 131X1201 131K03PARKER221G23 132F43 131K03001DPARKER221G2330 132F44 131K0350PARKER221G25 132F46 131T23PARKER221G25001D 132K03 131T2301PARKER221G2530 132K04 131T29PARKER221G26 132K06 131T2901PARKER221G26001D 132T22 131T22PARKER221G2630 132T23 131T21PARKER221G27 132T2301 131T2101PARKER221G27001D 132T29 131V5463PARKER221G2730 133F43 131V5406PARKER221G5303 133F4350 131V5363PARKER221G5306 133F44 131V5306PARKER221G5503 133F4450
派克直動(dòng)式比例溢流閥/美國(guó)PARKER
131V65PARKER221G5506 133F46 131X1101PARKER221G5603 133F4650 131X1201PARKER221G5606 133K03 132T22PARKER221J3301E 133K0350 132F44PARKER222G3303 133K04 132F46PARKER222G3306 133K04001D 122K8363PARKER222G3503 133K0450 122K8321PARKER222G3506 133K05 122K8306PARKER222G5303 133K06 125K03PARKER222G5306 133K0650 125K01PARKER222G5503 133K13 133F44PARKER222G5506 133K14 133F4450PARKER222G5603 133K16 133F46PARKER321F32 133T21 133F4650PARKER321F3202 133T2101 133F43PARKER321G36 133T23 133F4350PARKER321G3606 133T2301 133K14PARKER321G3610 133V5306 133K16
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