The velocity regulating butterfly valve with frequency conversion
song ji-yang(rugao yulong machine ltd; rugao 226500; china)

..............page:5-6,30

Improving on process of lead lap joint in valve electric actuator
han bing-qi; shi xing-jun(china university of petroleum(east china) mechanical & electrical equipment factory; dongying 257061; china)

..............page:42-43

zhong guo fa men xin xi wang cheng yuan

..............page:53-58

wen xian suo yin
liu kai ning

..............page:44-45

Trim interference analysis of metal hard seated butterfly valve
ni ping; yang jian-ning(ningbo amico copper valves mfg inc; ningbo 315020; china)

..............page:1-4

Manufacture of automatic needle-shape adjusting-valve used to high pressure dissolution reaction of alumina
tang xi-ying; yan wei-ze(jinshan mechanical plant; hejin 043304; china)

..............page:7-8

Research and analysis on deposit welding material on sealing surface for steel valve
gao qing-bao; yu de-chun(shenyang valve research institute; shenyang 110025; china)

..............page:9-18

Dynamic optimization study on unusual damping orifice
xie xin-min~1; tu ming-lin~1; xie wu-ming~2; tang ning~3(1.department of petroleum supply engineering; logistic engineering university; chongqing 400016; china; 2.school of environmental science and engineering; guangdong university of technology; guangzhou 510006; china; 3.china aviation oil supply chongqing corporation; chongqing 401120; china)

..............page:19-22

The improving clamp on the machining body of the cuneiform ball valve
yang an-sheng; su dian-shun(dalian dayanq valve industyies co.ltd; dalian 116021; china)

..............page:28,43

The properties and application of ceramic valves
xie dong~1; xie wen-cheng~2(shenzhen nanbo structure ceraics co.; ltd; shenzhen 518067; china)

..............page:31-32,36

The valve leakage automatic inspection device
jia bo(tianjin jinnan district bureau of quality and technical supervision administration of quality supervision; tianjin 300350; china)

..............page:23,27

Development of PLC system in process controlling plasma transferred arc
chen ke-xuan; liu guo-qing; li chun-xu; cai xiu-peng(lanzhou univ.of tech.; lanzhou 730050; china)

..............page:24-27

The flow characteristic analysis and application selection of regulating valve
yang shi-zhong; xing li-juan(automation engineering college of qingdao technological university; qingdao 266520; china)

..............page:33-36

Measure and analysis about the leakage rate in sealing test for metal-seated check valve covered in GB standard
hou yan; chen jiang-shan; huang ya-yun(anhui baihu valve factory; baihu 231508; china)

..............page:29-30

The leaking reason of filling material in the valve and its solution
chen quan~1; zheng zhong-fu~2; li zhi-xiang~3(1.nanyang yahekou power generation co.ltd; nanyang 474650; china; 2.fuzhou university; fuzhou 350002; china; 3.henan no.1 thermal power construction company; pingdingshan 467031; china)

..............page:40-41

Fugitive emission and control of valves for petrochemical plant
chen wei-qing~1; yue jin-cai~2(1.sinopec shanghai engineering co.; ltd.; shanghai 200120; china; 2.s.k.t.shanghai engineering co.; ltd.; shanghai 200135; china)

..............page:37-39