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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...

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...