4安全阀是直接依靠介质压力产生的作用力来克服作用在阀瓣上的机械载荷使安全阀开启的，作用在阀瓣上的机械载荷主要来自重锤或弹簧，这种几乎是固定的机械载荷。要想保证安全阀的密封性能，必须阀座密封面和阀瓣密封面的平整度和表面粗糙度有严格的要求。 以弹簧式安全阀为例： 工作原理应该是压力=压强X面积。压力就是弹簧的压力，面积就是密封面的面积。当作用在密封面上的压强乘以密封面的面积形成的向上的推力大于弹簧的压力，弹簧被压缩，密封面打开，将压力通过泄压孔排出。
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WMAP-40
WMAP-80 (15)VB型截止式换向阀阀块
(16)HMB,HMC和HMT型等升降阀块
HAWE截止式换向阀：GR2-2，GR2-2-G24
部分型号如下：
HAWE截止式换向阀：GR2-2，GR2-2-G24
BVE 3 Z-G24-1/2
BVG 1 Z-G24-3/8
BVG3R-G24-AT
BVG3Z-G24-AT
BVP1R-G24
BVP1R-WG230
BVP1S-G24
BVP1S-WG230
BVP1R-WG230
BVP1S-WG230
D4-1R
DR2-2
DS2-1
DS2-1R
DZ3-1
EM41V-G24
EM11V-G24 4WE6Y62/EG24N9K4 REXROTH DBW10B2-5X/2006EG24N9K44WE6H62/EW230N9K4溢流阀
4WE6C62/EG24N9K4 REXROTH 2FRM10-3X/50L6通经电磁阀（AC110V / DC110V）DB10-1-4X/50UW65
4WE6A62/EG24N9K4 REXROTH 4WE10J3X/CG24N9K44WE6D62/EW110N9K4 DB20-1-4X/50UW65
4WE6B62/EG24N9K4 REXROTH 4WE10J-3X/CW230N9K44WE6D62/CG110N9K4/VDB10-1-5X/200
4WE6J62/EG24N9K4 REXROTH 4WE6E-6X/EW230-N9K44WE6Y62/EW110N9K4 DB10-1-5X/315
4WE6E62/EG24N9K4 REXROTH 4WE6J-6X/EW230N9K44WE6Y62/EG110N9K4/VDB20-1-5X/200
4WE6M62/EG24N9K4 REXROTH 4WEH22E7X/6EG24N9ES2K4/B4WE6J62/EW110N9K4 DBDS6K1X/200
4WE6H62/EG24N9K4 REXROTH 4WRE10W75-2X/G24K4/V4WE6E62/EW110N9K4 DBDS6K1X/315
4WE6G62/EG24N9K4 REXROTH 4WRZ16WX/6EG24N9E4WE6G62/EW110N9K4DBDS6K1X/400
4WE6U62/EG24N9K4 REXROTH 4WRZ25WX/6EG24N9T4WE6H62/EW110N9K4DBDS10K1X/200
4WE6L62/EG24N9K4 REXROTH 4WRZ32WX/6EG24N9T10通经电磁阀（DC24V） DBDS10K1X/315
4WE6JA62/EG24N9K4REXROTH A10VSO140DR/31RPPB12N004WE10Y33/CG24N9K4 DBDS10K1X/400
4WE6JB62/EG24N9K4REXROTH A7V107DR/60R-PPB014WE10D33/CG24N9K4 DBDS20K/315
4WE6EA62/EG24N9K4REXROTH A7V250DR/5.1RPF004WE10C33/CG24N9K4 ZDB6VP2-4X/200V
4WE6EB62/EG24N9K4REXROTH DB30-2-5X/315/5V4WE10L33/CG24N9K4 ZDB6VD2-4X/200V
4WE6HA62/EG24N9K4REXROTH DBW20B2-5X/315-6EW230-N94WE10U33/CG24N9K4 ZDB10VD2-4X/200V
4WE6HB62/EG24N9K4REXROTH DBW30B2-5X/315UEW230-N9K4WE10J33/CG24N9K4 叠加式减压阀
4WE6GA62/EG24N9K4REXROTH FD32PA2X/B04V4WE10E33/CG24N9K4 ZDR6DA2-4X/150Y
4WE6GB62/EG24N9K4REXROTH Z4S10-3X4WE10G33/CG24N9K4 ZDR6DP2-4X/75YM
4WE6D6X/OFEG24N9K4 REXROTH ZDC25P-20/M4WE10H33/CG24N9K4 ZDR6DP2-4X/150YM
4WE6D7X/HG24N9K4REXROTH ZDC25P-2X/M10通经电磁阀（AC220V）ZDR6DP2-4X/210YM
4WE6Y7X/HG24N9K4REXROTH ZDC32P-2X/M 4WE10E33/CW230N9K4 ZDR10DP1-5X/150YM
4WE6J7X/HG24N9K4REXROTH 4WE6D6X/EG24N9K44WE10J33/CW230N9K4 ZDR10DP2-5X/150YM
4WE6E7X/HG24N9K4REXROTH 4WE6D6X/EW110N9K44WE10H33/CW230N9K4 ZDR10DP2-5X/210YM
4WE6H7X/HG24N9K4REXROTH 4WE6E6X/EG24N9K44WE10G33/CW230N9K4 ZDR10DA2-5X/75Y
4WE6G7X/HG24N9K4REXROTH 4WE6R6X/EG24N9K46通径球阀电液换向阀
6通经电磁阀（AC220V）REXROTH DBDS10P1X/315M-3SED6UK1X/350CG24N9K44WEH16D7X/6HG24N9ETK4/B10
4WE6D62/EW230N9K4 REXROTH DR10-5-5X/315 YMM-3SED6CK1X/350CG24N9K44WEH16E7X/6HG24N9ETK4/B10
4WE6Y62/EW230N9K4REXROTH HSZ06A604-3X/V00 M-2SEW6N3X/420MG205N9K44WEH16E7X/6EG24N9ETK4/B10
4WE6Y62/EW230N9K4/VREXROTH 4WE10J-20/LW220V-50NZ4 M-3SEW6C3X/420MG24N9K44WEH16J7X/6EG24N9ETK4/B10
4WE6J62/EW230N9K4 REXROTH 4WEH16J-7X/6EW230N9ESK4M-3SEW6C3X/630MG24N9K44WEH22J7X/6HG24N9ETK4/B10
4WE6E62/EW230N9K4 REXROTH VT-VSPA2-1-1X/T1 M-3SEW6U3X/420MG24N9K44WEH22E/6HG24N9ETK4
EM31V-3/4-G24
HAWE截止式换向阀：GR2-2，GR2-2-G24
EM41V-3/4-G24
G3-1-G24
G3-2-G24
GG24
G21-1-G24
G3-0R-G24
G3-0-G24
G3-1
G3-1-G24
G3-2-G24
G3-3-G24
G3-4-G24
GR2-1-G24
GR2-1R-G24
GR2-0-G24
HAWE截止式换向阀：GR2-2，GR2-2-G24
GRG24
GR2-1
GR2-1B-N24
GR2-1R-G24
GR2-1-G24
GRA24
GR2-1R-A24
GR2-2
GR2-2-G24
GR2-3-G24
GR2-4-G24
GS2-0-G24
GS2-0R-G24
WMAP-320
WMAP-210
4WEH16D50/6AG24NETZ5
4WEH25J6X/6EG24N9ES2K31
4WEH16J7X/6EG24N9ES2K31
4WEH22JZX/6EG24N9ES2K4
4WEH16E6X
H-4WEH25G6X
4WEH10J45/6EW230N9ETSK4/B10
4WEH10D45/6EW230N9ETSK4/B10
4WEH16E7X/GEG24N9ETK4
