News

Features of Pneumatic Butterfly Valves

Currently, as a kind of components to cut off pipeline system or regulate flow, butterfly valves have been widely used in various industries including petroleum, chemical engineer and metallurgy. Rubber, PTFE and other materials are used as sealing materials. Because of being limited by structural features,...

Corrosion Resistance on Body of Valves

Corrosion on valves can be considered that metal materials of vales are damaged due to chemical or electrochemical environment. Corrosion is caused by reaction between metal and surrounding environment. For this, separating metal form surrounding environment and using more non-metal synthetic materials...

Wafer Connection Improves Wafer Hard Seal Butterfly Valve

At present, various external connection forms are used to connect pipe valves, including the whole valve connection. Flange connection is well known. It is a connection that uses circular flange forged from stainless steel material to connect with every part of valves. As a commonly used connection...

Choosing Valves Based on Rate of Flow

When flow needs to be regulated, valves are necessary. Types of valves should meet the requirements of equipment. Valves in common use contain control valves, plunger valves, throttle valves, etc. The followings are choosing valves according to usage.  1. For cutting off or connecting media,...

Safeguards for Valves Installation

When install valves, user should not only know about installation methods, but also know about safeguards for valves installation. During installation, carelessness can easily result in valves damage or leakage. It causes a lot of troubles.  Safeguards for check valves installation  To...

Test of Control Valves before Installation

Parts of properties of control valves should be tested before installation. From delivery to installation, control valves and their attachments pass through transportation, storage and other environments. Different environments make properties of control valves and attachments change. So, the test of...

Usage and Features of Flat Gate Valves

Usage of flat gate valves Flat gate valves are a type of gate valves. Just like wedge gate valves, flat gate valves are mainly used to cut off media, instead of regulating flow of media inside pipelines. The advantages of flat gate valves include low fluid resistance, less labor, short face to face...

Properties and Advantages of Trunnion Mounted Ball Valves

A ball valve whose ball has a stationary shaft is called as trunnion mounted ball valve. Trunnion mounted ball valves are mainly used for high pressure and large dimension. Based on different installation of sealing ring on seat, trunnion mounted ball valves have two types of structure: ball forward...

Advantages of Triple Eccentric Hard Seal Butterfly Valves

Besides stem and disc two eccentricities, the sealing faces of disc and seat form an inclined platform which is the third eccentricity. When the valves turn off, disc is pushed forward due to eccentricity. Seat does not cause friction with seat during turning off and disc is pressed on seat directly,...

What Are Globe Valves?

Globe valves are a kind of valves that axis of stem is vertical to the sealing face of seat. The stem has relatively short stroke and reliable cutting off. Nevertheless, globe valves are quite suitable for cutting off or regulating media and throttling.   Once a globe valve opening, its seat does...

An American Oil Platform in Gulf of Mexico Exploded

It was reported that an American oil platform in Gulf of Mexico exploded on November 20, having caused one death and three injuries.   BSEE said that Fieldwood whose headquarter located at Houston,Texas reported that their oil platform which was 12 miles away from offshore of Louisiana exploded...

Bulgaria, Hungary Support South Stream Gas Pipe

South Stream gas pipe will be of great significance to realize diversified energy supply. Both Bulgaria and Hungary support to implement the program. That was the opinion published by Plevneliev, the president after meeting with János who visited to Bulgaria on November 11.   Plevneliev said...