先导式减压阀所用的调压气体,是由小型的直动式减压阀供给的。若把小型直动式减压阀装在阀体内部,则称为内部先导式减压阀;若将小型直动式减压阀装在主阀体外部,则称为外部先导式减压阀。图14—2所示为内部先导式减压阀的结构图,与直动式减压阀相比,该阀增加了由喷嘴4、挡板3、固定节流孔9及气室B所组成的喷嘴挡板放大环节。当喷嘴与挡板之间的距离发生微小变化时,就会使B室中的压力发生根明显的变化,从而引起膜片10有较大的位移,去控制阀芯6的上下移动,使进气阀口8开大或关小、提高了对阀芯控制的灵敏度,即提高了稳压精度。外部先导式减压阀的主阀,其工作原理与直动式相同。在主阀体外部还有一个小型直动式减压阀,由它来控制主阀。此类阀适于通径在20mm以上,远距离(30m以内)、高处、危险处、调压困难的场合
WSM12120V-01-C-N-230VAC-Z5L武汉盛美特机电设备有限公司
HYDAC HDA4445-A-016-000
HYDAC EDS-346-2-0250-Y00
HYDAC 目前有现货 HDA3844-A-250-Y10
HYDAC HDA3840-A-350-124 10M
HYDAC HDA 3844-A-400-000
HYDAC ETS 386-3-150-000
HYDAC EDS348-5-016-000+ZBE08+ZBM300
HYDAC WSM06020ZR-01-C-N24DG
HYDAC EDS346-2-400-000
HYDAC ETS1701-100-Y00
HYDAC DFP BN/HC 240 Q C 3C 1.0
HYDAC EDS346-1-016-000
HYDAC 过滤器监控器 VD5D.0/LED
HYDAC KHM-50-F6-11141-06X
HYDAC EDS 3446-2-0250-000
HYDAC EDS 3446-3-0250-000
HYDAC ETS1701-100-000+TFP100
HYDAC SK-3-D-150-K
HYDAC ETS1701-100-Y00
HYDAC KHB-G3/4-1212-01X
HYDAC TFP 104-000
HYDAC EDS1791-P-100-000 压力继电器
HYDAC HDA3745-A-100-174
HYDAC HDA3844-B-400-000传感器
HYDAC VD5D.0/-L24
HYDAC EDS3346-2-0010-000-F1
HYDAC EDS346-1-040-000
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HYDAC EDS346-3-250-Y00 传感器
HYDAC 0660R020BN3HC/-V-KB
HYDAC HDA 4345-A-0010-000-F1
HYDAC ZBE03
HYDAC SBO500-0.1A6/112U-500AK
HYDAC ETS3866-3-000-000
HYDAC EDS3448-5-0400-Y00
HYDAC HAD-3800-A-350-199
HYDAC VM2D.0/-V-L24
HYDAC EDS344-2-600-000
HYDAC 3000249
HYDAC EDS 3446-3-0400-000
HYDAC HDA4444-A-600-000
HYDAC EDS348-5-250-000
HYDAC EDS344-2-016-000
HYDAC EDS345-1-250-000
HYDAC EDS 3446-3-0016-Y00-F1
HYDAC HDA4445-A-016-000
HYDAC EDS344-2-250-000
HYDAC HDA3840-A-400-124 (6M)
HYDAC EDS348-5-250-000
HYDAC 0660R003BN4HC
HYDAC ENS 3118-5-0520-000-K
HYDAC EDS344-2-250-000
HYDAC EDS601-250-000压力继电器
HYDAC HDA4445-A-250-000
HYDAC ZBE02
HYDAC RBE-R3/4-X-150
HYDAC EDS345-1-400-000
HYDAC EDS344-3-350-000
HYDAC KHMFF-065-PNO16-8824-02X
HYDAC EDS344-2-250-000
HYDAC EDS345-1-016-000
HYDAC EDS344-2-400-000
DPZO-A-273-S5/DG
DPZO-A-273-S5/G 30
DPZO-A-371-L5/D 30
DPZO-A-371-L5/DEG/18 30
DPZO-A-371-L5/E
DPZO-A-371-S5 30
DPZO-A-371-S5/D
DPZO-A-371-S5/EG 30
DPZO-A-373-D5
DPZO-A-373-D5/D 30 /WG
DPZO-A-373-D5/DEG
DPZO-A-373-L5/DG 30
DPZO-A-373-L5/G 30
DPZO-A-373-S5/DG
DPZO-A-373-S5/G 30
DPZO-AE-171-L5/E
DPZO-AE-173-05/DGI
DPZO-AE-173-L5/GI 10
DPZO-AE-271-D5/I 30
DPZO-AE-271-L5 30
DPZO-AE-271-S5 30
DPZO-AE-271-S5/D
DPZO-AE-273-D5 30
DPZO-AE-273-L5/GI 30
DPZO-AE-273-S5 30
DPZO-AE-273-S5 30/WG
DPZO-AE-371-D5/E
DPZO-AE-371-S5/D 30
DPZO-AE-373-L5/D 30
DPZO-AE-373-L5/GI 30
DPZO-L-270-L5
DPZO-L-270-L5/D 40
DPZO-L-270-L5/DE
DPZO-L-270-L5/G 40
DPZO-L-271-L5
DPZO-L-271-L5/E 40
DPZO-L-271-S5
DPZO-L-271-S5/D
DPZO-L-273-L5 40
DPZO-L-273-L5/G
DPZO-L-273-S5
DPZO-L-273-S5/D
DPZO-L-273-S5/G 40
DPZO-L-351-L5/G 40
DPZO-L-673-D5 20 /WG
PFE-31036/1DT液压叶片泵 PFE-31036/1DT叶片泵 PFE-31036/1DT
PFE-31036/1DU 20液压叶片泵 PFE-31036/1DU 20叶片泵 PFE-31036/1DU 20
PFE-31036/1DV 20液压叶片泵 PFE-31036/1DV 20叶片泵 PFE-31036/1DV 20
PFE-31036/1DW液压叶片泵 PFE-31036/1DW叶片泵 PFE-31036/1DW
PFE-31044/1DT 20液压叶片泵 PFE-31044/1DT 20叶片泵 PFE-31044/1DT 20
PFE-31044/1DU 20液压叶片泵 PFE-31044/1DU 20叶片泵 PFE-31044/1DU 20
PFE-31044/1DV 20液压叶片泵 PFE-31044/1DV 20叶片泵 PFE-31044/1DV 20
PFE-32028/3DT 20液压叶片泵 PFE-32028/3DT 20叶片泵 PFE-32028/3DT 20
PFE-32028/3DV 20液压叶片泵 PFE-32028/3DV 20叶片泵 PFE-32028/3DV 20
PFE-32036/3DT液压叶片泵 PFE-32036/3DT叶片泵 PFE-32036/3DT
PFE-41037/1DU 20液压叶片泵 PFE-41037/1DU 20叶片泵 PFE-41037/1DU 20
PFE-41045/1DT液压叶片泵 PFE-41045/1DT叶片泵 PFE-41045/1DT
PFE-41045/1DU 20液压叶片泵 PFE-41045/1DU 20叶片泵 PFE-41045/1DU 20
PFE-41045/1DW 20液压叶片泵 PFE-41045/1DW 20叶片泵 PFE-41045/1DW 20
PFE-41056/1DT液压叶片泵 PFE-41056/1DT叶片泵 PFE-41056/1DT
PFE-41056/1DU 20液压叶片泵 PFE-41056/1DU 20叶片泵 PFE-41056/1DU 20
PFE-41056/1DV 20液压叶片泵 PFE-41056/1DV 20叶片泵 PFE-41056/1DV 20
PFE-41056/1DW 20液压叶片泵 PFE-41056/1DW 20叶片泵 PFE-41056/1DW 20
PFE-41070/1DT液压叶片泵 PFE-41070/1DT叶片泵 PFE-41070/1DT
PFE-41070/1DV 20液压叶片泵 PFE-41070/1DV 20叶片泵 PFE-41070/1DV 20
PFE-41070/2DT 20液压叶片泵 PFE-41070/2DT 20叶片泵 PFE-41070/2DT 20
PFE-41070/2DV 20液压叶片泵 PFE-41070/2DV 20叶片泵 PFE-41070/2DV 20
PFE-41085/1DT 20液压叶片泵 PFE-41085/1DT 20叶片泵 PFE-41085/1DT 20
PFE-41085/1DW 20液压叶片泵 PFE-41085/1DW 20叶片泵 PFE-41085/1DW 20
PFE-42045/3DW 20液压叶片泵 PFE-42045/3DW 20叶片泵 PFE-42045/3DW 20
PFE-42056/3DU 20液压叶片泵 PFE-42056/3DU 20叶片泵 PFE-42056/3DU 20
PFE-42070/3DT 20液压叶片泵 PFE-42070/3DT 20叶片泵 PFE-42070/3DT 20
PFE-42070/3DU液压叶片泵 PFE-42070/3DU叶片泵 PFE-42070/3DU
PFE-42070/3DW 20液压叶片泵 PFE-42070/3DW 20叶片泵 PFE-42070/3DW 20
PFE-42070/7DV液压叶片泵 PFE-42070/7DV叶片泵 PFE-42070/7DV
PFE-51090/1DT 23液压叶片泵 PFE-51090/1DT 23叶片泵 PFE-51090/1DT