力士乐比例换向阀4WRP10EA32S-1X/G24Z4/M-792 一种是开关控制:要么全开、要么全关,流量要么最da、要么最小,没有中间状态,如普通的电磁直通阀、电磁换向阀、电液换向阀。
另一种是连续控制:阀口可以根据需要打开任意一个开度,由此控制通过流量的大小,这类阀有手动控制的,如节流阀,也有电控的,如比例阀、伺服阀。
所以使用比例阀或伺服阀的目的就是:以电控方式实现对流量的节流控制(当然经过结构上的改动也可实现压力控制等),既然是节流控制,就必然有能量损失,伺服阀和其它阀不同的是,它的能量损失更大一些,因为它需要一定的流量来维持前置级控制油路的工作伺服阀的主阀一般来说和换向阀一样是滑阀结构,只不过阀芯的换向不是靠电磁铁来推动,而是靠前置级阀输出的液压力来推动,这一点和电液换向阀比较相似,只不过电液换向阀的前置级阀是电磁换向阀,而伺服阀的前置级阀是动态特性比较好的喷嘴挡板阀或射流管阀DRE6X-1X/175MG24-8NZ4M
DRE6X-1X/75MG24-8NZ4M
DRE6X-1X/310MG24-8NZ4M
DRE6X-1X/245MG24-8NZ4M-6
DRUCKREGELVENTIL
DRE6X-1X/175MG24-8NZ4M
DRE6X-1X/75MG24-8NZ4M-7
DRUCKREGELVENTIL
DREB6X-1X/310MG24-25Z4M
DREB6X-1X/175MG24-25Z4M
DREB6X-1X/75MG24-25Z4M
DBE6X-1X/80G24-8NZ4M
DBE6X-1X/180G24-8NZ4M
DBE6X-1X/315G24-8NZ4M
DBE6X-1X/315G24-25NZ4M
DBE6X-1X/180G24-25NZ4M
DBE6X-1X/80G24-25NZ4M
DBETX-1X/180G24-25NZ4M-36
DBETX-1X/25G24-25NZ4M-36
DBETX-1X/350G24-25NZ4M
DBETX-1X/50G24-8NZ4M
DBETX-1X/250G24-25NZ4M
DBETX-1X/50G24-25NZ4M
DRUCKBEGR.VENTIL
DBETX-1X/315G24-25NZ4M
DBETX-1X/180G24-25NZ4M
DBETX-1X/80G24-25NZ4M
DBETX-1X/250G24-8NZ4M-34
DBETX-1X/250G24-8NZ4M-35
DBETX-1X/180G24-8NZ4M-34
DBETX-1X/250G24-25NZ4M-39
DBETFX-1X/80G24-27NZ4M
DBETFX-1X/180G24-27NZ4M
DBETFX-1X/250G24-27NZ4M
DBETFX-1X/315G24-27NZ4M
DBETX-1X/250G24-8NZ4M
DBETX-1X/80G24-8NZ4M
DBETX-1X/315G24-8NZ4M
DBT-XP8-1X/160
DBETBX-1X/315G24-16Z4M
DBETBX-1X/180G24-16Z4M-37
DBT-G7-1X/160
DBT-G1-1X/315
DBT-G1-1X/160
DBW20BY3-5X/315X6EG24N9K4
DB20Y1-5X/315X
DB20Y1-5X/160X
DB20Z5-5X/160XY
DBW20BZ8-5X/315XYM6EG12N9K4
DB20Z6-5X/80XYM
DB20Z4-5X/160X
DBW20AZ8-5X/160XYM6EG24N9K4
DBW20BZ8-5X/160XYM6EG24N9K4
DB20Z4-5X/160XYM
DB20Z4-5X/160XM
DBW20AZ8-5X/315XYM6EG24N9K4
DBW20BZ8-5X/315XYM6EG24N9K4
DB20Z-5X/...XM
DB20Z4-5X/315XYM
DB20Z4-5X/315XM
DBW10BY3-5X/315X6EG24N9K4
DB10Y-5X/...X
DB10Y1-5X/315X
DB10Y1-5X/160X
DRUCKBEGR.VENTIL
DBW10BZ5-5X/160XYM6EW230N9K4
DBW10BZ5-5X/315XYM6EG12N9K4
DB10Z4-5X/160XY
DBW10BZ5-5X/160XYM6EG24N9K4
DB10Z4-5X/160XM
DBW10AZ5-5X/315XYM6EW230N9K4
DBW10BZ5-5X/315XYM6EW230N9K4
DBW10BZ5-5X/315XYM6EG24N9K4
DB10Z-5X/...XM
DB10Z4-5X/315XYM
DB10Z4-5X/315XM
DBD-VENTILOHNEGEHAEUSE,DR.BOY
DBD-VENTILOHNEGEHAEUSE,DR.BOY
DBD10Y3-1X/140
DB10DY2-1X/150
DB10DY1-1X/50
DBD10Y3-1X/50
DB10DY.-1X/60
DB10DY2-1X/50
DB10DY1-1X/300
DB10DY1-1X/150
SVR20PA1-1X/SO
SLR20PA1-1X/SO
Z2SR10-1-1X/V
SVR10PA1-1X/SO
SLR10PA1-1X/SO
RUECKSCHLAGVENTIL
RUECKSCHLAGVENTIL
SVR25PB1-1X/SO
RUECKSCHLAGVENTIL
RUECKSCHLAGVENTIL
RUECKSCHLAGVENTIL
RUECKSCHLAGVENTIL
SR25P1-1X