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Sealing Structure of Double & Triple Eccentric Butterfly Valve

Structure characteristics of the double eccentric butterfly valve is that the valve stem axis is deviated from the valve seat sealing surface center, the pipeline center and valve center. the effect of the double eccentric is that when it makes valve open, butterfly plate can quickly break away from...

Response to A Call of Improving the Recovery Rate of Waste Valves

Domestic valve industry has entered a period of rapid development in recent years.The identity of valve products have been gradually expanded from commodity to a broader industrial field; high technology has proposed higher requirements on valve products; all kinds of tasks on environmental protection...

China Valve Market Needs to Find Another Way

Valves as economic construction basic parts, its market competition gets increasingly fierce.Some common valve markets have saturated, which renders small and medium enterprises producing ordinary valves more and more difficult to develop. The demands of domestic valve market for valve products have...

Immeasurable Prospects for Stainless Steel Valve Market

In recent years, stainless steel valve products involved in the field get more and more wide.There is an increase year by year in demands among industrial sewage, environmental protection industry facilities. In the water industry, problems of pollution from which water suffers in the process of...

Non Leakage Metal Seated Forged Ball Valve From China

The metal seated forged steel ball valves from China have obvious cartridge style features. Its top entry design allow little time and money on installation, maintenance, replacement of the cartridge internals and downtime. Its other specific advantage is that it has no leakage, with no effect...

Weak independent innovation on domestic high-end valve market

Along with the country revitalizing the equipment manufacturing industry step by step, the development of general manufacturing industry base will be a key support. The petrochemical industry, power sector, metallurgical industry, chemical industry and city construction will enhance the demand for valve...

Status Quo of China Valve Casting Industry in 2013

Any high-tech generation is a double-edged sword. The existence of anything will be faced with both opportunities and challenges. The valve casting industry is no exception. According to experts’ analysis, the valve casting industry is in period of seeking direction at present, problems and opportunities...

Features and Working Principles of Flow Control Valve

Flow control valve is a kind of valves that depend on changing flow resistance at restrictor to control the flow late at the restrictor so that can regulate velocity of actuators such as hydraulic cylinder or hydraulic motor. Flow control mainly includes throttle valve, speed regulator valve, overflow...

Tips for Maintaining and Installing Tefulong Control Valve

Due to special characteristics, several tips need to be considered when install and maintain tefulong control valve: 1. The valve and flange cover plate cannot be taken apart optionally, except for having being prepared for connecting with piping. Otherwise, PTFE flange face may warp and transform due...

Wafer Connection Improves Wafer Hard Seal Butterfly Valve

Nowadays, there are various types of connection used to connect pipe valves, including connecting the whole valves. For example, flange connection is well known. Flanges connection uses circular flanges which are made by using stainless steel materials to connect every part of valves. The flanges are...

Tips for Installing Safety Valves on Piping

The followings are the tips for installing safety valves. (1) Safety valves should be installed erectly and close to protected equipments or piping. If the valves cannot be close, overall pressure drop on the distance from protected equipments or piping to inlet of safety valves should exceed 3% of...

Categories of Pneumatic Control Valves Introduction

Pneumatic control valves are classified into pneumatic diaphragm control valve and pneumatic piston control valve, which use compressed air as power source. The valves use diaphragm or piston air cylinder as actuator, driven by positioner, convertor, solenoid valve, lock up valve and other accessories...