ERPAC05F 10 4

ATOS阿托斯E-RP-AC-05F 10 /4放大版

武穴黎翔机电设备有限长期特价销售：意大利ATOS电磁阀、ATOS常规阀、ATOS叠加阀、ATOS插装阀、ATOS比例阀、 ATOS换向阀、ATOS盖板、ATOS柱塞泵、ATOS齿轮泵、ATOS叶片泵、ATOS普通油缸、ATOS伺服油缸、ATOS电子 器件、ATOS附件等液压产品。 大量现货库存，欢迎来电咨询。

广泛应用于钢铁、冶金、铝行业、石油化工、航天、船舶制造、煤炭、水泥、电力、汽车、工程机械、食品、药业、林业、纺织、皮革、造纸等行业领域

E-RI-AE-01/F
E-RI-AE-01F/I
E-RI-AE-01F/Q
E-RI-AE-01F/RR
E-RI-AE-05/F
E-RI-AE-05F/I
E-RI-AE-05F
E-RI-AE-05F/I
E-RI-AE-05F/Q
E-RI-AE-05F/RR
E-RI-AEG-PS-05H
E-RI-AES-BP-05H
E-RI-AE-05F/I
 E-RI-AERS-PS-01H 20 /BM003A
E-RI-LE-01H 41 /DL37SB
E-RI-LE-01H/Q 41 R/LQ32SA
E-RI-LES-BC-01H 30 /AM001A
E-RI-LE-01H
E-RI-LE-01H 40/DL16SA
E-RI-LE-01H/DL17SA
E-RI-TE-01H
E-RI-AE-05F
E-RI-LE-01H 41 /DL37SB
E-RI-LE-01H/Q 41 R/LQ32SA
E-RI-LES-BC-01H 30 /AM001A
 E-RI-LE-01H 41 /DL37SB
 E-RI-LE-01H/Q 41 R/LQ32SA
 E-RI-LES-BC-01H 30 /AM001A
E-RACK3HE21TE
E-RACK3HE28TE 
E-RACK3HE42TE 
E-RACK3HE49TE  
E-RACK3HE56TE  
E-RACK3HE84TE 
E-RI-TE-01H 40 /DH04SA  
E-RI-TE-01H/I 40 /DH04SA  
E-RI-TE-05H 40 /DK17SB 
E-RP-AC-01F/I 10 /2  
E-RP-AC-01F/I 10 /A1 
E-RP-AC-05F 10 /4 




 E-RI-TE-01H
E-RI-TE-01H 41/ DK14SC
E-RI-TE-05H  41/DH07SA
 E-RI-TE-01H 41 /TK14SC
 E-RI-TE-01H/I 41 /DK14SC
 E-RI-TE-01H/I 41 /TQ42SA
 E-RI-TES-BC-05H 30 /AB004A
E-RI-TE-01H 41/DK14SC
E-RI-TERS-PS-01H20/BM103A
E-RI-TE-01H
E-RI-TE-01H 40 /DH04SA  
E-RI-TE-01H 41 /TK14SC
E-RI-TE-01H/I 40 /DH04SA  
E-RI-TE-01H/I 40 /DH04SA,　 
E-RI-TE-01H/I 41 /DK14SC
E-RI-TE-01H/I 41 /TQ42SA
E-RI-TE-05H 40 /DK17SB 
E-RI-TE-05H 40 /DK17SB,　 
E-RI-TES-BC-05H 30 /AB004A
 E-RP-AC-01F/I 10 /2
 E-RP-AC-01F/I 10 /2
 E-SA/10
 E-SD/DC
 E-SW-BC
 E-SW-BC
 E-SW-PS
 E-TLP-2-2/2C 25
 E-TRM-BC-DB9/DB9
E-RI-TE-01H 41/DK14SC
E-RI-TE-01H
E-RI-TE-01H 40 /DH04SA  
E-RI-TE-01H 41 /TK14SC
E-RI-TE-01H/I 40 /DH04SA  
E-RI-TE-01H/I 40 /DH04SA,　 
E-RI-TE-01H/I 41 /DK14SC
E-RI-TE-01H/I 41 /TQ42SA
E-RI-TE-05H 40 /DK17SB 
E-RI-TE-05H 40 /DK17SB,　 
E-RI-TES-BC-05H 30 /AB004A


ATSO放大器E-RI-TE-01H40/DH04SA
ATSO放大器放大器E-RI-TE-01H/I40/DH04SA现货
ATSO放大器E-RI-TE-05H40/DK17SB
RZM0-P1-010/100                             AGMZ0-A-10/100 
AGMZO-A-10/100  
RZMO-P1-010/100 
PVPC-C-5090/1D11 现货  
DHRZ0-P5-012/25 21  现货             
DPZ0-A-271-L5 32   现货
DKE-1611/3/AFI现货
ATOS 比例阀 DPZO-LE-360-L5/DG 
ATOS导阀RZMO-P3-PS-010/210/I/BM103A 52现货 
ATOS导阀RZMO-P3-PS-010/210/I/BM103A现货 
ATOS导阀RZMO-P3-PS-010/210/I/BM003A现货 
溢流阀 HM-011/210/40
溢流阀 HM-011/210
溢流阀 HM-013/100/V
溢流阀 HM-013/350
溢流阀 HM-013/350
溢流阀 HM-015/350
溢流阀 HMP-011/100
溢流阀 HMP-011/100/VS
溢流阀 HMP-011/350
溢流阀 HMP-011/350
溢流阀 HMP-011/350
溢流阀 HMP-011/350/V
溢流阀 HMP-012/350
溢流阀 HMP-013/100
溢流阀 HMP-013/210 22
溢流阀 HMP-013/350
溢流阀 HMP-014/210
比例减压阀 HZGO-A-031/210
比例减压阀 HZGO-A-031/315
防爆阀 HZMA-A-030/250/PA-M/7
比例溢流阀 HZMO-A-030/210
插装式安全阀 JO-DL-4-2/N0-X-24DC
插装式安全阀 JO-DL-10-2/NC/FI-24DC
减压阀 JPG-211/100/V/WG
叠加式节流阀 JPQ-212
叠加式节流阀 JPQ-212
叠加式节流阀 JPQ-212/G
叠加式节流阀 JPQ-222
叠加式节流阀 JPQ-312
单向阀 JPR-212
单向阀 JPR-212/4
减压阀 KG-031/210
减压阀 KG-031/210 
减压阀 KG-031/210 
减压阀 KG-031/210
溢流阀 KM-011/100/V
溢流阀 KM-011/210
溢流阀 KM-011/210
溢流阀 KM-012/100/V
溢流阀 KM-012/100/V
溢流阀 KM-012/100/V
溢流阀 KM-012/210/V
溢流阀 KM-012/350/VS
溢流阀 KM-013/210
溢流阀 KM-013/350
溢流阀 KM-015/210
叠加式节流阀 KQ-012
叠加式节流阀 KQ-012
叠加式节流阀 KQ-013
叠加式节流阀 KQ-014
叠加式节流阀 KQ-012/G
叠加式节流阀 KQ-012/G
叠加式节流阀 KQ-012/G
叠加式节流阀 KQ-012/G
叠加式节流阀 KQ-022
叠加式节流阀 KQ-022/G
叠加式节流阀 KQ-023
单向阀 KR-012
单向阀 KR-012
单向阀 KR-012/4
单向阀 KR-013
单向阀 KR-014
比例减压阀 KZGO-A-031/315
插装阀 LIDA-1
插装阀 LIDA-2
插装阀 LIDEW-2
插装阀 LIDBHIC-2-1 30
插装阀 LIMHA-2/350
插装阀 LIMHA-3-350/V
插装阀 LIMHA-3-350/V
插装阀 LIMHA-3-350/V
插装阀 LIMHA-3-350/V
插装阀 LIMHA-4/350/V-IX24DC/X12
插装阀 LIMHC-1/210/V-IX24DC
插装阀 LIMHC-1-350/V
插装阀 LIMHC-1-350/V
插装阀 LIMHC-1-350/V
插装阀 LIMHC-2/350 24DC
插装阀 LIMM-2/350
插装阀 LIMM-3/350/V/X12
插装阀 LIMM-4/350/V/X12
插装阀 LIMM-5/350/V/X12
比例插装阀 LIQZO-L-80-2L4
比例插装阀 LIQZO-LE-252-L4
比例插装阀 LIQZO-LE-252-L4
比例插装阀 LIQZO-LE-402-L4/Q
比例插装阀 LIQZO-LE-502-L4/Q
比例插装阀 LIQZO-LE-503-L4
比例插装阀 LIQZO-LE-503-L4/A
比例插装阀 LIQZO-LES-PS-322L4/I
比例插装阀 LIQZO-LES-PS-402L4/I
比例插装阀 LIQZO-LES-PS-632L4/I
比例插装阀 LIQZO-LES-PS-802L4/I
比例插装阀 LIQZO-TE-162-L4+SP-ZH-7P
比例插装阀 LIQZO-TE-402-L4
比例插装阀 LIQZO-TES-PS-162-L4
比例插装阀 LIQZO-TES-PS-162-L4/IZ
压力继电器 MAP-40
压力继电器 MAP-40
压力继电器 MAP-080/E
压力继电器 MAP-160
压力继电器 MAP-320
压力继电器 MAP-320
压力继电器 MAP-320
流量控制阀 QV-06/1
流量控制阀 QV-06/6
流量控制阀 QV-06/16
流量控制阀 QV-06/16-HT
流量控制阀 QV-06/16-HT
流量控制阀 QV-06/24
流量控制阀 QV-10/2
比例流量阀 QVHZO-A-06/18/6
比例流量阀 QVHZO-A-06/45
比例流量阀 QVHZO-TE-06/12
比例流量阀 QVHZO-TE-06/12/I
比例流量阀 QVHZO-TE-06/18/I/PE
比例流量阀 QVKZOR AE 10/90/I
比例流量阀 QVKZOR AES PS 10/90/I
比例流量阀 QVKZOR-TE-10/90/I
比例流量阀 QVMZO-A-20/2-S4
RMU-010/100
比例溢流阀 RZMO-A-010/210
比例溢流阀 RZMO-A-010/210
比例溢流阀 RZMO-A-010/210/18
比例溢流阀 RZMO-A-010/210
比例溢流阀 RZMO-A-010/315 2O
比例溢流阀 RZMO-A-030/100
比例溢流阀 RZMO-A-030/210 40
比例溢流阀 RZMO-A-030/315
比例溢流阀 RZMO-AE-010/100
比例溢流阀 RZMO-AE-010/210/I
比例溢流阀 RZMO-AE-010/315
比例溢流阀 RZMO-AE-030/315
比例溢流阀 RZMO-AE-030/315
比例溢流阀 RZMO-AES-PS-010/210 10
比例溢流阀 RZMO-TERS-PS-010/100
比例溢流阀 RZMO-TERS-PS-010/210
比例溢流阀 RZMO-TERS-PS-010/210
比例溢流阀 RZMO-TERS-PS-010/210/I
比例溢流阀 RZMO-TERS-PS-010/315 52
比例溢流阀 RZMO-TERS-PS-010/315
比例溢流阀 RZMO-TERS-PS-030/315
比例溢流阀 RZMO-TERS-PS-030/315
导阀 RZMO-P1-010/100
导阀 RZMO-P1-010/100
导阀 RZMO-P1-010/210 20
导阀 RZMO-P1-010/210 20
导阀 RZMO-P1-010/315 20
导阀 RZMO-P1-010/315 20
导阀 RZMO-P3-PS-010/210/I
导阀 RZMO-P3-PS-010/210/I
E-RI-TERS-PS-01H/1
导阀 RZMO-P3-PS-010/210/1/BM103A-51
导阀 RZMO-P3-PS-010/210/I
导阀 RZMO-P3-PS-010/210
导阀 RZMO-P3-PS-010/210
导阀 RZMO-P3-PS-010/315
导阀 RZMO-P1E-010/100 20
比例减压阀 RZGO-A-010/32
比例减压阀 RZGO-A-010/100
比例减压阀 RZGO-A-010/210
比例减压阀 RZGO-A-010/210
比例减压阀 RZGO-A-033/210
比例减压阀 RZGO-A-033/315
比例减压阀 RZGO-A-033/315
比例减压阀 RZGO-AE-033/100/I
比例减压阀 RZGO-AE-033/210/I
比例减压阀 RZGO-AES-PS-010/210/I
比例减压阀 RZGO-TERS-PS-010/100
比例减压阀 RZGO-TERS-PS-010/100/I
比例减压阀 RZGO-TERS-PS-010/100/I
比例减压阀 RZGO-TERS-PS-033/100
比例减压阀 RZGO-TERS-PS-033/100/I
比例减压阀 RZGO-TERS-PS-033/210
比例减压阀 RZGO-TERS-PS-033/210
比例减压阀 RZGO-TERS-PS-033/210/I
防爆比例阀 RZGA-A-010/100/PA-M/7
防爆比例阀 RZGA-A-010/210/PA-M 24DC
防爆比例阀 RZGA-A-033/80/M/7
防爆比例阀 RZGA-A-033/80/PA-GK/7
防爆比例阀 RZGA-A-010/100/PA-M/7
防爆比例阀 RZGA/M-A-010/210/M
防爆比例阀 RZGA/M-A-010/100/PA-M
防爆比例阀 RZGA/M-A-010/100/PA-M
防爆比例阀 RZGA/M-A-010/100/PA-M
防爆比例阀 RZMA-A-030/180/PA-GK/7
阀门 RZMA-A-033/180-PA-GK/7
插装阀 SCLI-16313
插装阀 SCLI-16322
插装阀 SCLI-1632/2
插装阀 SCLI-1633/3
插装阀 SCLI-25312
插装阀 SCLI-25423
插装阀 SCLI-32317
插装阀 SCLI-40313
插装阀 SCLI-40317
插装阀 SCLI-40317
插装阀 SCLI-40374
插装阀 SCLI-50313
插装阀 SP-CART M-3/50
插装阀 SP-CART M-3/50
插装阀 SP-CART M-3/50
插装阀 SP-CART M-3/50
溢流阀 SP-CART M-6/10-210/R/V
溢流阀 SP-CART ARE-15/8-250/R/V
溢流阀 SP-CART ARE-15/8
线圈 SP-CAU-24DC
线圈10通径 CAE-230AC
线圈10通径 CAE-24DCATOS阿托斯比例溢流阀工作原理是：比例溢流阀通过弹簧力的大小改变溢流压力大大小变化，比例电磁铁作用在弹簧上的力可以按比例调整，所以就输入信号变化比例溢流阀的压力也会变化
普通溢流阀与比例溢流阀一样，都有一个阀芯，阀芯的一端是液压油产生的压力，另一端是机械力。普通溢流阀通过调节弹簧力，来调整液压压力。而比例溢流阀是电磁铁直接产生推力，作用在阀芯上，电磁铁上的输入电压可以在0-24伏之间变化，产生的推力就随之变化，从而得到连续变化的液压压力。
因为比例电磁铁的推力不大，所以直动式比例溢流阀的流量很小，压力70兆帕时，流量只有1升/分钟左右。需要大流量比例阀的时候，要把这个比例阀做先导阀，下面还要配一个大通径的溢流阀。

ATSO放大器
E-K-11B,　E-K-32M,　E-K-32P
压力传感器 E-ATR-7/100/I
压力传感器 E-ATR-7/160
压力传感器 E-ATR-7/250/I
压力传感器 E-ATR-7/400/I
压力传感器 E-ATR-7/400/I
压力传感器 E-ATR-7/400/I
放大器 E-BM-AC-011F
放大器 E-BM-AC-011F
放大器 E-BM-AC-05F
放大器 E-BM-AC-05F
放大器 E-BM-AC-05F
ATSO放大器E-BM-AC-011F
ATSO放大器E-MI-AS-IR-01 
ATSO放大器E-BM-AC-011F
ATSO放大器E-BM-AC-01F11/2
ATSO放大器E-BM-AC-01F11/3
ATSO放大器E-BM-AC-01F/RR11/A1
ATSO放大器E-BM-AC-05F11/3
ATSO放大器E-BM-AC-05F11/4
ATSO放大器E-BM-AC-05F/RR11/3
ATSO放大器E-ME-AC-01F20
ATSO放大器E-ME-AC-01F20/1
ATSO放大器E-ME-AC-01F20/2
ATSO放大器E-ME-AC-01F20/3
ATSO放大器E-ME-AC-01F20/4
ATSO放大器E-ME-AC-01F20/6


ATSO放大器E-ME-AC-01F 20/A1
ATSO放大器E-ME-AC-01F 20/A2
ATSO放大器E-ME-AC-01F 20/A4


E-BM-AC-011F
E-BM-AC-01F
E-BM-AC-01F  
E-BM-AC-05F
E-BM-AC-05F
E-BM-AS-PS-0.5H  
E-K-11B
E-K-11B
E-K-32M
E-K-32M
E-ME-AC-01F
E-ME-AC-O1F/1/A2
E-ME-AC-01F/TLP23L/S
E-ME-AC-01F/4R-4
E-ME-AC-05F       
E-ME-AC-05F/RR-4
E-ME-AC-05F/A
E-ME-AC-05F
E-ME-K-PID
E-ME-L-01H
E-ME-L-01H
E-ME-L-01H/I 40/DL27SB
E-ME-T-01H
E-ME-T-01H 40/DH04SA
E-ME-T-01H/I 40/DH04SA
E-ME-T-01H/ DK14SC
E-ME-T-05H
E-ME-T-05H   E40/DK17SB
E-ME-T-05H/DK-17SB  
E-MI-AC-01F/ RR
E-MI-AC-01F
E-MI-AC-01F/7 20/3
E-MI-AC-01F/7 20 13   
E-MI-AC-01F20/2
E-RI-AE-05F
E-RI-TE-01H 41/ DK14SC
E-RI-TE-05H  41/DH07SA
E-RI-TERS-PS-01H20/BM103A
E-RP-AC-01F 
E-RP-AC-05F
ATSO放大器E-ME-AC-01F/4R-420
ATSO放大器E-ME-AC-01F/4R-420/2
ATSO放大器E-ME-AC-01F/4R-420/3
ATSO放大器E-ME-AC-01F/4R-420/6
ATSO放大器E-ME-AC-01F/I20
ATSO放大器E-ME-AC-01F/I20/2
ATSO放大器E-ME-AC-01F/I20/4
E-ME-AC-01F/I20/6
ATSO放大器E-ME-AC-01F/RR20/4
ATSO放大器E-ME-AC-01F/RR20/A2
ATSO放大器E-ME-AC-01F/RR-420
ATSO放大器E-ME-AC-01F/RR-420/3
ATSO放大器E-ME-AC-01F/RR-420/6
ATSO放大器E-ME-AC-01F-420/2
ATSO放大器E-ME-AC-05F20
ATSO放大器E-ME-AC-05F20/2
ATSO放大器E-ME-AC-05F20/3
ATSO放大器E-ME-AC-05F20/4
ATSO放大器E-ME-AC-05F20/A3
ATSO放大器E-ME-AC-05F/4R-420/3
ATSO放大器E-ME-AC-05F/4R-420/4
ATSO放大器E-ME-AC-05F/I20
ATSO放大器E-ME-AC-05F/I20/3
ATSO放大器E-ME-AC-05F/I20/4
ATSO放大器E-ME-AC-05F/RR20
ATSO放大器E-ME-AC-05F/RR20/3
ATSO放大器E-ME-AC-05F/RR20/4
ATSO放大器E-ME-AC-05F/RR-420/3
ATSO放大器E-ME-AC-05F/RR-420/4
ATSO放大器E-ME-AC-05F-420/3
ATSO放大器E-ME-AC-05F-420/4
ATSO放大器E-ME-K-PID
ATSO放大器E-ME-L-01H40/DL17SA
ATSO放大器E-ME-L-01H40/DL26SB
ATSO放大器E-ME-L-01H40/DL27SB
ATSO放大器E-ME-L-01H40/DL27SB
ATSO放大器E-ME-L-01H40/DL27SB
ATSO放大器E-ME-L-01H40/DL35SB
ATSO放大器E-ME-L-01H40/DL67SA
ATSO放大器E-ME-L-01H40/LQ22SA
ATSO放大器E-ME-L-01H40/LQ32SA
ATSO放大器E-ME-L-01H40/PCNNSA
ATSO放大器E-ME-L-01H/DL27SB
ATSO放大器E-ME-L-01H/I40/LQ32SA
ATSO放大器E-ME-T-01H40/DH04SA
ATSO放大器E-ME-T-01H40/DH05SA
ATSO放大器E-ME-T-01H40/DK14SC
ATSO放大器E-ME-T-01H40/DK15SB
ATSO放大器E-ME-T-01H40/QV0NSA
ATSO放大器E-ME-T-01H40/TK14AA
ATSO放大器E-ME-T-01H40/TK14SC
ATSO放大器E-ME-T-01H40/TQ25SA
ATSO放大器E-ME-T-01H40/TQ32SA
ATSO放大器E-ME-T-01H40/TQ42SA
ATSO放大器E-ME-T-01H40/QV1NSB
ATSO放大器E-ME-T-01H/I40/DH04SA
ATSO放大器E-ME-T-01H/I40/DK14SC
ATSO放大器E-ME-T-01H/I40/DP25SB
ATSO放大器E-ME-T-01H/I40/DP25SC
ATSO放大器E-ME-T-01H/I40/QV0NSA
ATSO放大器E-ME-T-01H/I40/TQ25SA
ATSO放大器E-ME-T-01H/I40/DK15SB
ATSO放大器E-ME-T-05H40/DH07SA
ATSO放大器E-ME-T-05H40/DK17SA
ATSO放大器E-ME-T-05H40/DK17SB
ATSO放大器E-ME-T-05H40/DP27SB
ATSO放大器E-ME-T-05H/I40/DK17SB
ATSO放大器E-ME-T-05H/I40/DP27SB
ATSO放大器E-ME-T-05H/I40/DH07S


ATSO放大器E-MI-AC-01F11/1
ATSO放大器E-MI-AC-01F11/2
ATSO放大器E-MI-AC-01F11/3
ATSO放大器E-MI-AC-01F11/4
ATSO放大器E-MI-AC-01F11/6
ATSO放大器E-MI-AC-01F/711/3
ATSO放大器E-MI-AC-01F/711/4
ATSO放大器E-MI-AC-01F/RR11/1
ATSO放大器E-MI-AC-01F/RR11/2
ATSO放大器E-MI-AC-01F/RR11/3
ATSO放大器E-RACK3HE21TE
ATSO放大器E-RACK3HE28TE
ATSO放大器E-RACK3HE42TE
ATSO放大器E-RACK3HE49TE
ATSO放大器E-RACK3HE56TE
ATSO放大器E-RACK3HE84TE
ATSO放大器E-RI-TE-01H40/DH04SA
ATSO放大器放大器E-RI-TE-01H/I40/DH04SA现货
ATSO放大器E-RI-TE-05H40/DK17SB
ATSO放大器E-RP-AC-01F/I10/2
ATSO放大器E-RP-AC-01F/I10/A1
ATSO放大器E-RP-AC-05F10/4
ATSO放大器BM-AC-011F/I
ATSO放大器BM-AC-01F/RR
E-ME-AC-01F
E-ME-AC-01F/2
E-ME-AC-01F/I
E-ME-AC-01F/RR-4
E-ME-AC-05F
E-ME-AC-05F/RR4
E-ME-AC-O5F/3
E-ME-K-PID
E-ME-L-01H/140/DL27SB
E-ME-T-01H/DH04SA
E-ME-T-05H
E-MI-AC-O1F
E-RI-AE-05F/I
E-RI-TE-01H
HC-011/30


E-MI-AC-01F/RR 20 /1
E-MI-AS-IR
E-MI-AS-IR-01H 10
E-MI-AS-IR-01H 11
E-MI-AS-IR-01H/I/MC 11 (100)
E-MI-AS-IR-01H/M12 11
E-RI-AERS-PS-01H 20 /BM003A
E-RI-LE-01H 41 /DL37SB
E-RI-LE-01H/Q 41 R/LQ32SA
E-RI-LES-BC-01H 30 /AM001A
E-RI-TE-01H 41 /TK14SC
E-RI-TE-01H/I 41 /DK14SC
E-RI-TE-01H/I 41 /TQ42SA
E-RI-TES-BC-05H 30 /AB004A
E-A-BC-USB/DB9
E-A-BP-USB/DB9
E-C-BC-DB9/M12
E-C-BP-DB9/M12
EDS 3446-3-0250-000(没带线)(E-ATR-7/250/I)
EDS 3446-3-0250-000(有带线)(E-ATR-7/250/I)
EDS3446-3-0250-000(带线)
E-K-11B
E-K-11B
E-RP-AC-01F/I 10 /2
E-RP-AC-01F/I 10 /2
E-SA/10
E-SD/DC
E-SW-BC
E-SW-BC
E-SW-PS
E-TLP-2-2/2C 25
E-TRM-BC-DB9/DB9