双向换向阀
可分为手动换向阀、电磁换向阀、电液换向阀等。
又称克里斯阀，阀门的一种，具有多向可调的通道，可适时改变流体流向。
工作时借着阀外的驱动传动机构转动驱动轴，带动摇拐臂，启动阀板，使工作流体时而从左入口通向阀的下部出口，时而从右入口变换通向下部出口，实现了周期变换流向的目的。

R901087087 4WE6E7X/HG24N9K4
R900588201 4WE10E3X/CG24N9K4
R988001990 REPAIR AA10VSO 10
R900951305 PGH3-2X/016RE07VU2
R900340979 M-SR20KE05-1X/
R900422247 DB10-1-4X/50U W65
R900912737 4WE10D3X/CG24K4QMBG24
0811405126 VT-MSPA1-508-10/V0
R900020154 VT3002-1-2X/48F
R900424277 DBDS20P1X/200
R900422247 DB10-1-4X/50U W65
R900517812 Z2FS10-5-3X/V
R900420525 S20A1.0/
R900912572 LC16A20D7X/
R901104197 Z1S6P15-4X/V
R900592014 3WE10A3X/CG24N9K4
0811402055 DRE6X-1X/175MG24-8NZ4M
R900517189 FD32FB2X/300B06V
R911329323 RKL0040/005,0  (RLK3101-INK0604-RLS0723)
R911329321 RKL0042/005,0  (RLK3101-INK0605-RLS0723)
R900561274 4WE6D6X/EG24N9K4
R900549534 4WE6HA6X/EG24N9K4
0811404430 4WRLE25V370M-3X/G24K0/A1M
R900598358 DR10-5-5X/200YM
R900086321 PGH4-2X/040RE11VU2
R901147103 PGH4-3X/040RE11VU2
R910945178 AA10VSO18DFR1/31R-PPA12N00
R910910590 AA10VSO28DFR1/31R-PPA12N00
R900587557 SV20PA1-4X/
R900967527 ZDB10VP1-4X/100
R900410884 ZDR10DA2-5X/150Y
R900752824 Z4WEH10E63-5X/4KEG24N9ETK4
安全性：
1、腐蚀性介质：宜选用塑料王电磁阀和全不锈钢；对于强腐蚀的介 质必须选用隔离膜片式。中性介质，也宜选用铜合金为阀壳材料的电磁阀，否则，阀壳中常有锈屑脱落，尤其是动作不频繁的场合。氨用阀则不能采用铜材。
2、爆炸性环境：必须选用相应防爆等级产品，露天安装或粉尘多场合应选用防水，防尘品种。
3、电磁阀公称压力应超过管内高工作压力。

节流阀
R900481624 Z2FS6-2-4X/2QV
R900517812 Z2FS10-5-3X/V
R900457256 Z2FS16-8-3X/S2
R900459203 Z2FS16-8-3X/S
R900443176 Z2FS22-8-3X/S2   
R901086051 Z1S6P05-4X/V  
R901086058 Z1S6T05-4X/V   
R900347495 Z2S6-1-6X/
R900407394 Z2S10-1-3X/
R900328797 Z2S16-1-5X/  
R900432915 Z2S22-1-5X/  
单向阀
R900422886 S8A1.0
R900420531 S10A1.0
R900420537 S15A1.0
R900420511 S25A1.0
R900420519 S30A1.0  
R900344549 M-SR10KE05-1X/
R900345372 M-SR15KE05-1X/
R900344778 M-SR25KE05-1X/   
R900344919 M-SR30KE05-1X/
叠加式溢流阀
R900409854 ZDB6VB2-4X/200V
R900409844 ZDB6VP2-4X/200V
R900409898 ZDB6VP2-4X/315V
叠加式减压阀
R900483786 ZDR6DP2-4X/75YM
R900483787 ZDR6DP2-4X/150YM
R900483788 ZDR6DP2-4X/210YM
R900410884 ZDR10DA2-5X/150Y      
           ZDR10DP2-5X/75YM
           ZDR10DP1-5X/150YM
           ZDR10DP2-5X/150YM
           ZDR10DP2-5X/210YM
R900411358 Z2DB10VD2-4X/200V     
R900598358 DR10-5-5X/200YM
R900597233 DR20-5-5X/200YM  
R900596883 DR10-5-5X/315Y  
R900597048 DR20-5-5X/315Y  
比例阀
0811404036 4WRPH6C3B40L-2X/G24Z4/M
0811404035 4WRPH6C3B24L-2X/G24Z4/M
0811404034 4WRPH6C3B12L-2X/G24Z4/M
0811402017 DBETX-1X/180G24-8NZ4M
0811403017 4WRBA10EA75-2X/G24K4/M-828
0811402019 DBETX-1X/250G24-8NZ4M
0811402016 DBETX-1X/315G24-8NZ4M
0811402003 DBETBX-1X/180G24-37Z4M
0811403001 4WRP10EA63S-1X/G24Z4/M
0811404114 4WRBA6E30-2X/G24N9Z4/M
0811404405 4WRL25V370M-3XG24Z4M
0811404601 4WRPEH6C3B12L-2X/G24K0/A1M
0811404602 4WRPEH6C3B24L-2X/G24K0/A1M
0811404603 4WRPEH6C3B40L-2X/G24K0/A1M
0811404613 4WRPEH6C4B40L-2X/G24K0/A1M
0811402058 DRE6X-1X/310MG24-8NZ4M