三联 - 3 way
多路 - multi-way ; in my opinion it is redundant to translate it.
换向阀 Directional Control Valves or diverter valve

PDF] 3-Way Directional Control Valves For Reliable Control of Single ... File Format: PDF/Adobe Acrobat - Quick View
A typical multi-cylinder control set-up using V and VC Series valves. ... 3-Way Directional Control Valves. Model. Number. Schematic Flowpath. Advance ...
www.metrohydraulic.com/URLs/enerpac/.../3WAY_E324.pdf - Similar\

[PDF] 电液换向阀Electro-Hydraulic Directional Control Valve - [ Translate this page ]File Format: PDF/Adobe Acrobat - Quick View
1． 用于中位泄荷换向阀，需单独订货，电液10通径（FWH－03）无此阀。 Middle unloaded directional control valve ...
trade-key.net/USER_ROOT/nb-hoyea/.../302420090110022407.pdf


Three-way diverter valve - Patent 6240949 by GR Gerstenberger - 2001 - Cited by 1 - Related articles
A three-way valve is configured as a solenoid operated diverter when the solenoid is used in parallel with a poppet valve. When the diverter is in a first ...
www.freepatentsonline.com/6240949.html - Similar

换向阀-公司产品(搜圈网站,商业搜索,网络推广)|金泉网商务网站 - [ Translate this page ]球塞式分向閥、换向阀. 球塞式分向閥(DB)Diverter Valve Ball Type 標準規格: 尺寸：1-12〞~ 12〞 法蘭規格：JIS10k、 ANSI150#、 PN10 使用. ...
www.biz.jqw.com/productlist/12819/list.html - Cached

The key point is for this question is 三联 in my eyes.

I put multiple possibilities at target term section for you to select according to your context details.

See following for ref.:

电磁阀 和 三联阀, 翻译这两个
悬赏分：0 - 解决时间：2008-5-19 11:20
如题

提问者： lilyzhang1225 - 五级最佳答案Electromagnetic valve
Triple valve,
http://zhidao.baidu.com/question/54232137.html

网络释义以下结果来自互联网
1. triparte valve
电磁阀 magnetic valve / solenoid valve / solenoid operated valve...三联阀 triparte valve...回答者： Ariel_wenqi - 护国法师 十四级 2008-5-19 11:13
zhidao.baidu.com - 相关搜索
http://www.iciba.com/������

Web Translation

换向阀
Divert Valve
5)换向阀(divert valve)EV1、次级阀(secondary valve)EV2．1一EV2．3：EV1用来控制
冷却水流向水箱或泄流槽内。 ... www.52blog.net
reversing valve
reversing valve|换向阀. Revision|修改. Revolutions per minute|转分 rib|筋肋. www.tydf.cn
selector valve
环形阀double beat valve 换向阀selector valve 换向阀shuttle valve 回转滑阀活塞泵 www.doroto.com

21 Century Bidirectional Science And Technology Dictionary

换向阀
change-over valve [机] reversal valve [机]