力士樂溢流閥ZDB6VB2-4X/315V；淺析先導式溢流閥與直動型溢流閥的區別
溢流閥可分為直動型和先導式兩類。直動型溢流閥是作用在閥芯上的主油路液壓力與調壓彈簧力直接相平衡的溢流閥。根據閥口和測壓面結構形式不同，形成三種基本結構。
先導式溢流閥：主閥彈簧主要用于克服閥芯的摩擦力，彈簧剛度小。當溢流量變化引起主閥彈簧壓縮量變化時，彈簧力變化較小，因此閥進口壓力變化也較小。調壓精度高，廣泛應用于高壓、大流量系統。
溢流閥的閥芯在移動過程中要受到摩擦力的作用，閥口開大和關小時的摩擦力方向剛好相反，使溢流閥開啟時的特性與關閉時的特性產生差異。

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流量閥的作用是在閥的進出口壓差變化的情況下，利用調節閥芯和閥體間的節流口面積和它所產生的局部阻力對流量進行調節，從而控制執行元件的運動速度。維持通過的流量恒定，從而維持與之串聯的被控對象(如一個環路、一個用戶、一臺設備等，下同)的流量恒定。管網中應用流量閥，可直接根據設計來設定流量，閥門可在水壓作用下，自動消除管線的剩余壓頭及壓力波動所引起的流量偏差。流量閥的名稱較多，如自力式流量平衡閥、定流量閥、動態平衡閥等。各種類型的流量閥，結構各有不同，但工作原理相似。

力士樂溢流閥ZDB6VB2-4X/315V

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力士樂溢流閥ZDB6VB2-4X/315V

溢流閥是一種液壓壓力控制閥，在液壓設備中主要起定壓溢流作用，穩壓，系統卸荷和安全保護作用。
定壓溢流作用：在定量泵節流調節系統中，定量泵提供的是恒定流量。當系統壓力增大時，會使流量需求減小。此時溢流閥開啟，使多余流量溢回油箱，保證溢流閥進口壓力，即泵出口壓力恒定（閥口常隨壓力波動開啟）。

力士樂溢流閥ZDB6VB2-4X/315V

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R900335417 LEITUNGSDOSE 7P C01530F0060011 &
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R900352608 M-SR 30 KE00-1X/
R900352672 DBDS 6 G1X/315/12
R900352720 4WMM 6 E5X/SO329
R900352747 4WH 6 Y5X//V
R900352847 PR4-1X/1,00-450WG01M01
R900352977 DRV 12 -1-1X/V/12
R900352978 DBGT-1X/315VE1
R900353020 4WMDA 6 J5X/F/B10
R900353046 DB 52 P2-3X/100U
R900353047 DB 52 P2-3X/315U
R900353049 DB 52 F2-3X/100U
R900353051 DB 52 F2-3X/315XYU
R900353053 DB 52 F2-3X/100YU
R900353054 DB 52 P2-3X/315XU
R900353113 4WMR 6 D5X/SO329
R900353273 4WMM 6 G5X/F/B08
R900353299 DBDS 6 K1X/315JV
R900353547 MH3WA 06 CG1X/004M02
R900353560 S 20 A2.0//12
R900353658 L-DB 40 F2-3X/16Y
R900353670 LFA 32 H2-6X/F
R900353691 DBETR-1X/315G24K4M-381
R900353738 L-DB 65 F2-3X/16
R900353789 L-DB 40 F2-3X/16
R900353821 MK 20 G1X/V/12
R900354070 G 578/01
R900354192 L-DB 80 F2-3X/16Y
R900354272 S 25 A5.0//12
R900354276 DR 20 K5-1X/200YMJ
R900354439 DR 5 DP2-1X/400XYM
R900354476 MHFS 25 FB1-1X/B63M11
R900354564 3WMR 6 A5-5X/SO45
R900354570 FDR 5 DP3-1X/150Y
R900354593 RS 415-1X/200/1,0/1,0Y
R900354636 SL 30 GB3-3X/SO 250
R900355108 RS 417/J
R900355146 MHDBD 10 K2-1X/200M-017
R900355274 4WMM 6 D5X/F SO67
R900355434 ZDC 25 PT-2X/XM
R900355471 W-S 40 K1-3X/
R900355475 H-4WH 22 E7X/SO8
R900355607 MH3WA 06 CG1X/010M01
R900356093 L-DB 80 F2-3X/16
R900356166 L-DB 80 F2-3X/16U
R900356258 M-SR 8 KE50-1X/
R900356291 M-SR 10 KE00-1X/
R900356419 4TH 7 G28-1X/M01-008
R900356420 2TH 7 L28-1X/M01-008
R900356466 S 10 A2.0//12
R900356471 DB 20 G2-4X/50/12 W65
R900356590 DRV 06 -1-1X/V
R900356616 LC 40 A00E6X/
R900356736 G 576/01
R900356765 M-SR 25 KE50-1X/V
R900356969 M-SR 30 KE30-1X/V
R900356970 M-SR 30 KE02-1X/V
R900357091 MH6WH 22 AG1X/003M01
R900357120 G 282/12
R900357152 DB 10 G2-4X/200XY W65
R900357416 4WH 6 M5X/
R900357438 M-SR 8 KE02-1X/
R900357445 M-SR 25 KE05-1X/V
R900357465 HM 5-3X/200-230
R900357477 L-DB 50 F2-3X/16U
R900357531 Z1S 10 T1-3X/V SO30

力士樂溢流閥ZDB6VB2-4X/315V