ATOS比例阀一般采用两端承压面积不等的差径活塞结构。工作原理为：比例阀不工作时，差径活塞在弹簧的作用下处于上极限位置。此时阀门保持开启因而在输入控制压力与输出压力从零同步增长的初始阶段，而且总是相等。但是活塞上方液压作用力大于活塞下方液压作用力。在输入输出压力同步增长过程中当活塞上、下两端液压作用之差超过弹簧的预紧力时，活塞便开始下移。当输入和输出压力增长到一定值时活塞内腔中的阀座与阀门接触，进油腔与出油腔即为隔绝。此即比例阀的平衡状态。
   若进一步提高输入压力则活塞将回升，阀门再度开启。油液继续流入出油腔使输出压力也升高，但活塞又下降到平衡位置。比例阀节制后轮管路压力的工作点与汽车的载荷无关这就是非感载比例阀。若要使其工作点与汽车载荷的大小相适应就必须能改变弹簧力的大小这就是感载比例阀。
    一般说来，好像伺服系统都是闭环控制，比例多用于开环控制；其次比例阀类型要多，有比例压力、流量控制阀等，控制比伺服药灵活一些。从他们内部结构看，伺服阀多是零遮盖，比例阀则有一定的死区，控制精度要低，向应要慢。但从发展趋势看，特别在比例方向流量控制阀和伺服阀方面，两者性能差别逐渐在缩小，另外比例阀的成本比伺服阀要低许多，抗污染能力也强。

本公司拥有数千万库存，在产品价格及供货周期上有较强的优势，zui大限度的满足用户的需求
DHI-0610/A-X 230/50/60AC,
DHI-0610/A-X 24DC 23,
DHI-0610-X 110/50/60AC,
DHI-0610-X 230/50/60AC 23,
DHI-0610-X 24DC
DHI-0611/A-X 24DC 23,
DHI-0611/FC-X 24DC 23,
DHI-06119/A-X 24DC 23,
DHI-0611-X 24DC 23,
DHI-0612/A-X 24DC,
DHI-0613/A-X 24DC 23,
DHI-0613/WP-X 230AC,
DHI-0613-X 230/50/60AC,
DHI-0613-X 24DC,
DHI-0614-X 24DC,
DHI-0616/A-X 230/50/60AC,
DHI-0618/A-X 24DC 23,
DHI-0630/2/A-X 230/50/60AC 23,
DHI-0630/2/A-X 24DC 23,
DHI-0630/2-X 24DC,
DHI-0631/1/2/A-X 24DC,
DHI-0631/2/A-IX 24DC,
DHI-0631/2/A-X 110/50/60AC 23,
DHI-0631/2/A-X 230/50/60AC 23,
DHI-0631/2/P-X 24DC,
DHI-0631/2/WP-X 12DC 23,
DHI-0631/2/WP-X 220DC 23,
DHI-0631/2/WP-X 230/50/60AC,
DHI-0631/2P/A-X 24DC,
DHI-0631/2P-X 24DC,
DHI-0631/2-X 230/50/60AC,
DHI-0631/2-X 110/50/60AC,
DHI-0631/2-X 220DC,
DHI-0631/2-X 24DC,
DHI-0632/2/A-X 230/50/60AC 23,
DHI-0632/2/A-X 24DC 23,
DHI-0632/2-X 230/50/60AC,
DHI-0632/2-X 24DC 23,
DHI-0639/C-X 24DC 23,
DHI-0670-X 24DC 23,
DHI-0671/A-X 24DC,
DHI-0671/FC-X 24DC 23,
DHI-0674-X 24DC 23,
DHI-0701/2-X 110/50/60AC,
DHI-0710/WP-X 24DC 23,
DHI-0710-X 230/50/60AC,
DHI-0710-X 24DC,
DHI-0711-X 24DC,
DHI-0711-X 110/50/60AC 23,
DHI-0711-X 230/50/60AC,
DHI-0713/1-X 230/50/60AC,
DHI-0713/WP-X 12DC 23,
DHI-0713/WP-X 230/50/60AC 23,
DHI-0713/WP-X 24DC 23,
DHI-07139-X 24DC 23,
DHI-0713P 24DC,
DHI-0713-X 110/50/60AC,
DHI-0713-X 230/50/60AC,
DHI-0713-X 24DC,
DHI-0713-X 24DC 23/PE,
DHI-0714/WP-X 230/50/60AC,
DHI-0714/WP-X 230/50/60AC 23/PE,
DHI-0714-X 230/50/60AC,
DHI-0714-X 24DC,
DHI-0715/FI/NC-X 24DC,
DHI-0715-X 24DC,
DHI-0716-X 24DC,
DHI-0717-X 24DC,
DHI-0718-X 230/50/60AC,
DHI-0718-X 24DC,
DHI-0750/2-X 24DC,
DHI-0751/2/FI/NC-X 24DC 23,
DHI-0751/2/FI/NO-X 24DC 23,
DHI-0751/2/WP-X 230/50/60AC,
DHI-0751/2/WP-X 230/50/60AC 23/PE,
DHI-0751/2/WP-X 24DC,
DHI-0751/2-X 110/50/60AC 23,
DHI-0751/2-X 230/50/60AC,
DHI-0751/2-X 24DC,
DHI-0630/2/A-X 24DC 20,
DHO-0631/2/A-X 24DC 20,
DHO-0631/2/L1-X 24DC 20,
DHO-0631/2-X 24DC,
DHO-0639/O-X 24DC 20,
DHO-0710-X 24DC 20,
DHO-0711-X 24DC,
DHO-0713-X 24DC 20,
DHO-07191-X 24DC,
DHO-0750/2-X 24DC 20
SDHI-0631/2 SDHI-0631/2/A-X 24DC,
SDHI-0631/2-X 24DC,
SDHI-0639/C-X 24DC 23,
SDHI-0639/O-X 230/50/60AC 23,
SDHI-0639/O-X 24DC,
SDHI-0710-X 230/50/60AC 23,
SDHI-0711-X 12DC 23,
SDPHI-2711/1/D-X 24DC 31,
SDPHI-2711/D-X 24DC,
SDPHI-2713/D-X 24DC,
SDPHI-2713-X 24DC,
SDPHI-27191/D-X 24DC,
SDPHI-3631/2-X 24DC 53,
SDPHI-3711/1/DE-X 24DC,
SDPHI-3711/1/D-X 24DC,
SDPHI-3711/1/E-X 24DC,
SDPHI-3711/DE-X 24DC,
SDPHI-3711/D-X 24DC,
SDPHI-3713/E-X 230/50/60AC 53,
SDPHI-3713/E-X 24DC 53,
SDPHI-3713-X 24DC 53,
SDPHI-3714/8/DE-X 24DC,
SDPHI-3714/8/E-X 24DC,
SDPHI-3714/DE-X 24DC
意大利ATOS阿托斯放大器型号：
E-BM-AC-011F,
E-BM-AC-011F/I,
E-BM-AC-01F/RR,
E-BM-AC-01F 11/2,
E-BM-AC-01F 11/3,
E-BM-AC-01F/RR 11/1,
E-BM-AC-05F 11/3,
E-BM-AC-05F 11/4,
E-BM-AC-05F/RR 11/3,
E-K-11B,
E-K-32M,
E-K-32P,
E-ME-AC-01F 20,
E-ME-AC-01F 20/1,
E-ME-AC-01F 20/2,
E-ME-AC-01F 20/3,
E-ME-AC-01F 20/4,
E-ME-AC-01F 20/6,
E-ME-AC-01F 20/A1,
E-ME-AC-01F 20/A2,
E-ME-AC-01F 20/A4,
E-ME-AC-01F/4R-4 20,
E-ME-AC-01F/4R-4 20/2,
E-ME-AC-01F/4R-4 20/3,
E-ME-AC-01F/4R-4 20/6,
E-ME-AC-01F/I 20,
E-ME-AC-01F/I 20/2,
E-ME-AC-01F/I 20/4,
E-ME-AC-01F/I 20/6,
E-ME-AC-01F/RR 20/4,
E-ME-AC-01F/RR 20/A2,
E-ME-AC-01F/RR-4 20,
E-ME-AC-01F/RR-4 20/3,
E-ME-AC-01F/RR-4 20/6,
E-ME-AC-01F-4 20/2,
E-ME-AC-05F 20,
E-ME-AC-05F 20/2,
E-ME-AC-05F 20/3,
E-ME-AC-05F 20/4,
E-ME-AC-05F 20/A3,
E-ME-AC-05F/4R-4 20/3,
E-ME-AC-05F/4R-4 20/4,
E-ME-AC-05F/I 20,
E-ME-AC-05F/I 20/3,
E-ME-AC-05F/I 20 /4,
E-ME-AC-05F/RR 20,
E-ME-AC-05F/RR 20/3,
E-ME-AC-05F/RR 20/4,
E-ME-AC-05F/RR-4 20/3,
E-ME-AC-05F/RR-4 20/4,
E-ME-AC-05F-4 20/3,
E-ME-AC-05F-4 20/4,
E-ME-K-PID,
E-ME-L-01H 40/DL17SA,
E-ME-L-01H 40/DL26SB,
E-ME-L-01H 40/DL27SB,
E-ME-L-01H 40/DL27SB,
E-ME-L-01H 40 /DL27SB,
E-ME-L-01H 40/DL35SB,
E-ME-L-01H 40/DL67SA,
E-ME-L-01H 40/LQ22SA,
E-ME-L-01H 40/LQ32SA,
E-ME-L-01H 40/DL27SB,
E-ME-L-01H 40/PCNNSA,
E-ME-L-01H/DL27SB,
E-ME-L-01H/I 40/LQ32SA
ATOS盖板型号：
LIDA-1/F,
LIDA-1/WP,
LIDA-2/F,
LIDA-2/WP,
LIDA-3/F,
LIDA-3/WP,
LIDB-1/F,
LIDB-1/WP,
LIDB-2/F,
LIDB-2/WP,
LIDB-3/F,
LIDB3/WP,
LIDEW-1/F,
LIDEW-1/E,
LIDEW-1/WP,
LIDEW-2/F,
LIDEW-2/E,
LIDEW-2/WP,
LIDEW-3/F,
LIDEW-3/E,
LIDEW3/WP,
LIDBH-1/F,
LIDBH-1/E,
LIDBH-1/WP,
LIDBH-2/F,
LIDBH-2/E,
LIDBH-2/WP,
LIDBH-3/F,
LIDBH-3/E,
LIDBH-3/WP
ATOS换向阀型号：
DKE-1631/2 24DC，
DKER-1711,
DKE-1713-X 24DC ,
DKE-1618-SP666-24DC ,
DKE-1718-X 24DC ，
DKE-1631/2-X 24DC
DKE-1713-X24DC
DKE-1711-X 24DC
DKE-1710-X 24DC
DKE-1630/2-X
DKER-1631/2
DKER-1751/2
DKE-1631/2-X24DC+SP667
DKE-1611-X 24DC
DKOR-1611/A-X 24DC,
DKOR-1631/2-X 24DC,
DKOR-1671-X 24DC,
DKOR-1710-X 24DC 10,
DKOR-1711/L-X 24DC 10,
DKOR-1711-X 24DC 10,
DKOR-1713-X 24DC,
DKOR-1714-X 24DC 10,
DPHI-1614/AD-X 24DC,
DPHI-1631/2/DE-X 24DC,
DPHI-1711/D-X 24DC 40,
DPHI-1713/DH-X 24DC,
DPHI-1713/D-X 230/50/60AC,
DPHI-1713/D-X 24DC 40,
DPHI-1713-X 24DC,
DPHI-2611/DS-X 24DC 31,
DPHI-2611/D-X 24DC 31,
DPHI-2613/AD-X 24DC 31,
DPHI-2613/A-X 24DC 31,
DPHI-2613/D-X 24DC 31,
DPHI-2613-X 24DC,
DPHI-2630/2/E-X 24DC 31,
DPHI-2631/2/A-X 24DC 31,
DPHI-2631/2/D 24DC 31,
DPHI-2631/2/DH9RWP-X 24DC 31,
DPHI-2631/2/D-X 24DC 31,
DPHI-2631/2/E-X 24DC,
DPHI-2631/2/FI/NC-X 24DC 30,
DPHI-2631/2-X 24DC 31,
DPHI-2671/DS-X 24DC 31,
DPHI-2701/DH-X 24DC 31,
DPHI-2701/R-X 24DC 31,
DPHI-2711/DS-X 230/60AC 31,
DPHI-2711/D-X 230/50/60AC,
DPHI-2711/D-X 24DC,
DPHI-27116-X 24DC,
DPHI-2711-X 24DC,
DPHI-2713/D-X 24DC,
DPHI-2713-X 24DC,
DPHI-2716/H9-X 24DC,
DPHI-27193/HWP-X 24DC 31,
DPHI-2751/2/D-X 24DC 31,
DPHI-2751/2-X 24DC 31,
DPHI-3630/2/D-X 24DC 53,
DPHI-3631/2/E-X 24DC,
DPHI-3631/2/FI/NC-X 24DC 52,
DPHI-3631/2-X 24DC 53,
DPHI-3710/D-X 24DC,
DPHI-3711/1/D-X 24DC,
DPHI-3711/DE-X 24DC,
DPHI-3711/DS-X 230/50/60AC,
DPHI-3711/D-X 24DC,
DPHI-3711/FI/NC-X 24DC 52,
DPHI-3713/DS-X 230/50/60AC,
DPHI-3713/D-X 24DC 53,
DPHI-3713/E-X 230/50/60AC,
DPHI-3713/H-X 230/50/60AC 53,
DPHI-37139/S-X 24DC,
DPHI-3713-X 24DC 53,
DPHI-3714/8/DE-X 24DC,
DPHI-3714/DE-X 24DC,
DPHI-3714/R-X 24DC 53,
DPHI-3716-X 24DC 53,
DPHI-3751/2/D-X 24DC 53,
DPHI-3751/2-X 24DC 53,
DPHI-6713/D-X 24DC 33,
DPHI-6713/E-X 230/50/60AC 33,
DPHI-6713-X 24DC 33,
DPHI-6716/D-X 24DC,
DPHO-3630/2/A-X 24DC 11,
DPHO-6713/D-X 24DC 11,
DPHU-1713/H-X 24DC 41,
DPHU-1713-X 24DC 32,
PHU-1751/2-X 24DC,
DPHU-2631/2/EH9-X 24DC 32,
DPHU-2711/HL2-X 24DC,
DPHU-2711/H-X 24DC 32,
DPHU-2711-X 24DC 32,
DPHU-2713/D-X 24DC 32,
DPHU-2713/H-X 24DC 32,
DPHU-2713/L1-X 24DC 32,
DPHU-2713-X 24DC,
DPHU-2714/EH-X 24DC,
DPHU-2750/L1-X 24DC,
DPHU-2751/2/WP-X 24DC,
DPHU-2751/2-X 24DC,
DPHU-3711/L1-X 24DC,
DPHU-3711/S-X 24DC 54,
DPHU-3713/D-X 24DC 54,
DPHU-3713-X 24DC,
PHU-3716-X 24DC 54,
DPHU-3717-X 24DC 54,
DPHU-3751/2-X 24DC 54,
DPHU-3751/D-X 24DC,
DPHU-6711/DH-X 24DC 34,
DPHU-6711/H-X 24DC 34
流量控制阀
QV-06/1
QV-06/11
QV-06/16
QV-06/16/V 60
QV-06/24
QV-06/24/K 60
QV-06/6
QV-06/6/V 60
QV-10/2
QV-10/2/V 53
QV-10/3/K
QV-20/2
QV-20/2/K
QV-20/2/V 53
QV-20/3 53
PFEX2-51150/51150/3DW 23
PFEX2-51150/51150/3DV 23
PFEX2-51150/51129/3DV 23
PFEX2-42045/31022/3DT 21
PFEX2-31036/31022/1DT
PFED-54150/085/3DWO 21
PFED-54150/085/1SVO 21
PFED-54150/070/3DVO
PFED-54129/029/1DWG 21
PFED-54110/056/3DWB 21
PFED-54110/056/1DUO 21
PFED-54110/029/1DUO
PFED-54110/029/1DTO 21
PFED-54090/070/3DUF 21
PFED-54090/070/1DVO 21
PFED-54090/070/1DUO 21
PFED-43070/044/1DVO
PFED-43070/044/1DUO 20
PFED-43070/016/1DUO
PFED-43056/016/1DTO
PFED-43045/044/1DVO 20
PFED-43045/044/1DTO
PFED-43045/028/1DTO 20
PFED-43037/022/1DVO 20
PFED-43037/016/3SUO 20
PFED-43037/016/1DTA
PFED-43029/028/1DVO 20
PFED-43029/016/1SWO
PFED-43029/016/1DWO 20
PFE-52110/3DT 31
PFE-52090/3DT 31
PFE-51150/3DV
PFE-51150/1DT
PFE-51129/1DT
PFE-51110/3DT 23
PFE-51110/1DU 23
PFE-51110/1DT 23
PFE-51090/1DU
PFE-51090/1DT 23
PFE-42070/7DV
PFE-42070/3DW 20
PFE-42070/3DU
PFE-42070/3DT 20
PFE-42056/3DU 20
PFE-42045/3DW 20
PFE-41085/1DW 20
PFE-41085/1DT 20
PFE-41070/2DV 20
PFE-41070/2DT 20
PFE-41070/1DV 20
PFE-41070/1DT
PFE-41056/1DW 20
PFE-41056/1DV 20
PFE-41056/1DU 20
PFE-41056/1DT
PFE-41045/1DW 20
PFE-41045/1DU 20
PFE-41045/1DT
PFE-41037/1DU 20
PFE-32036/3DT
PFE-32028/3DV 20
PFE-32028/3DT 20
PFE-31044/1DV 20
PFE-31044/1DU 20
PFE-31044/1DT 20
PFE-31036/1DW
PFE-31036/1DV 20
PFE-31036/1DU 20
PFE-31036/1DT
PFE-31028/1DV
PFE-31028/1DU
PFE-31028/1DT
PFE-31022/1DW
PFE-31022/1DU
PFE-31022/1DT
PFE-31016/1DU
PFE-31016/1DT
ATOS插装阀型号：
LIDEW1-1-IX 24DC 10,
LIDEW1-2/B-IX 24DC 10,
LIDEW1-2/E-IX 24DC,
LIDEW1-2-IX 24DC 10,
LIDEW1-3/E-IX 24DC,
LIDEW1-4-IX 24DC 10,
LIDEW1-4-IX 24DC 10 X12A,
F12A,
LIDEW1-6-IX 230/50/60AC,
LIDEW-2,
LIDEW-2 F12A,
LIDEW-2/B F12A,
LIDEW-2/BF 10 X12A,
LIDEW-2/F 10 X12A,
LIDEW2-1/E-IX 24DC,
LIDEW2-2/E-IX 24DC,
LIDEW-3 10,
LIDO-2 10,
LIDO-3/E,
LIMHA-1/210-IX 24DC,
LIMHA-1/350-IX 24DC 31,
LIMHA-2/210-IX 24DC 31,
LIMHA-2/350-IX 24DC 31,
LIMHA-3/350/V-IX 24DC 40 X12A,
LIMHA-3/350-IX 24DC 40 X12A,
LIMHA-4/350/V-IX 24DC 32 X12A,
LIMHC-2/350-IX 230/50/60AC 31,
LIMM-1/210,
LIMM-1/P/350,
LIMM-2/210 20,
LIMM-2/350 20,
LIMM-3/350 40 X12A,
LIMM-3/350/V 40 X12A,
LIMM-4/210/V 31,
LIMM-4/350/V 31 X12A,
LIMM-5/100/V 31,
LIMM-5/350 31,
LIMZA-A-1/180/M 20,
LIMZA-A-3/180/M 40,