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Z系列多路换向阀
Z SERIES MULTIPLE DIRECTIONAL CONTROL VALVES
Z系列多路换向阀是由多个换向阀和安全阀及各种附加阀组合而成。它具有工作压力高、结构紧凑、安全阀性能好、可靠性高、不易外漏、通用性好等特点。它主要用于ZL40以下装载机及多功能装载机、小型挖掘机等工程机械的液压系统中，也用于起重运输机械、矿山机械、农业机械或其它机械的液压系统中，实现多个执行机构的集中控制。
该系列多路换向阀每连都带单向阀。根据用户需要，可在任一工作腔和回油腔之间安装过载阀或补油阀。能够组成并联、串联或串并联复合油路，并有多种滑阀机能、定位、复位方式及控制方式，也可利用过桥阀体或外接油口向其他机构提供油源，广泛满足了不同主机的需要。
The Z series multiple directional valves are several direction valves and a variety of additional safety valve and valve combination of the blocks combination valve may require a combination of parts work for even less than 10 multi-valve blocks.It has a high-pressure work,compact,good safety performance,high reliability and general good and so on .It is mainly used for the following ZL40 loader and multi-loaders,excavators,and other small-scale engineering machinery hydraulic system,also used for hoisting and conveying machinery ,mining machinery ,agricultural machinery or other mechanical hydraulic system,the multi-In executing agency of centralized control.
This series of multi valve is all each joint with a one-way valve.According to the needs of the user,can be installed the overload valve and oil charge valve between the any one of the working channel and backing channel.Can be composed of parallel,serial or parallel strings oil complex,and there are a variety of sliding valve function,positioning,reduction and control methods may also make used of the bridge body to the mouth of oil or other external agencies to provide oil to meet a wide range A host of different needs.
功能特点 FUNCTIONS AND FEATURES
阀结构：片式结构，可根据工作机构需要随意组合10连以内的多路阀组。
Valve structure;Blocks structure ,according to the agencies need to work at random combination of 10 even within the multi-valve block.
附加阀：可以任一工作腔和回油腔之间安装需要压力的过载阀和补油阀。
Additional valve:Can be installed the overload valve and oil charge valve between the any one of the working channel and backing channel by need to pressure.
负载保持阀：每连都内置有负载保持和压力隔断的单向阀。
Load keeping valve:There are built-in the one-way valve with load keeping the pressure cut-off in every joint.
油路形式：并联、串联或串并联复合油路。
Oil road mode:Parallel,series and series-parallel connection.
过桥：具有过桥功能，可利用过桥阀体或外接油口向其安机构提供油源。
Ditch:With ditch,can provision oil to the install parts though the ditch body or the outlet.
控制方式：手动、液动控制、并具有钢球定位方式。
Controls:manual,hydraulic operation and spring ball reset.
适用主机：通用性多路阀，主要适用中小型装载机、挖掘机及其它机械。
Apply to host:Universal multi-valve,main application of the small and medium-sized loaders,excavators and other machinery
性能参数SPECIFICATIONS
| 型号 Model | 公称通径 Nom.dia. （mm） | 公称压力 Non.pressure （MPa） | 公称流量 Nom.flow （L/min） | 允许背压 Allowable back pressres （MPa） | 工作油液Working oil | 计算重量Calculated weight（kg） | ||||||||
| 温度范围 Temp.range （℃） | 粘度范围 Visc.range （mm²/s） | 过滤精度 Filtrating accuracy （μm） | 1连 One piece | 2连 Two piece | n连 N piece | |||||||||
| ZL15 | 15 | 31.5 | 63 | ≤2.5 | -20~+80 | 10~400 | ≤10 | 12.4 | 17.7 | 7.1+5.3n | ||||
| ZL20 | 20 | 100 | 20 | 27.5 | 12.5+7.5n | |||||||||
| ZL25 | 25 | 160 | 29.2 | 42.8 | 15.6+136.6n | |||||||||
| 型号 Model | 公称通径Nom.dia. （mm） | 先导液控压力 Pilot pressure （MPa） | 安全阀及过载阀或二次压力阀的调压范围（MPa） Pressure range of relief valve overload valve or secondary pressure vale | 补油阀开启压力（MPa） Opening pressure of the make up valve | ||||||||||
| E | F | G | H | |||||||||||
| ZL15 | 15 | 0.5~2.5 | 4~16 | 6~20 | 8~25 | 10~32 | ≤0.2 | |||||||
| ZL20 | 20 | |||||||||||||
| ZL25 | 25 | |||||||||||||
注：油液zui高污染等级：按GB/T14039之19/16.
Note:Maximum permissible degree of contamination of the oil is according to GB/T14039-19/16.
