Faults and maintenance of Wafer electric Butterfly valves

​If you do not carefully check the usage condition and performance specifications of the wafer-type electric butterfly valve before installation, the wafer-…

What are the selection conditions of electric butterfly valve and pneumatic butterfly valve?

Electric butterfly valve is a very common pipeline flow regulation device, widely used, involved in many fields, such as the regulation of water flow in the …

The structure and working principle of the trap

Steam trap in the steam heating system plays a role in preventing steam drainage, choose the right trap, can make the steam heating equipment to achieve the …

How to choose the right valve in pipeline design?

​In the fluid piping system, the valve is the control element, its main role is to isolate the equipment and piping system, regulate the flow rate,

Valve components anticorrosion precautions

1. Valve stem corrosion and protectionMain causes of valve stem corrosion:The corrosion damage of the valve body is mainly caused by the corrosive medium, an…

Method of judging internal leakage of natural gas ball valve

​Fixed shaft ball valve is commonly used on natural gas pipelines, and its general inspection method is: turn the valve to the fully open or fully closed po…

Valve performance testing

1. Inspection of appearance and logoCheck content: whether the appearance of the valve has defects, such as cracks, bubbles, dents, etc. Check signage, namep…

O-type ball valve and V-type ball valve difference

​Ball valve has many kinds of structure, but basically the same little difference, are the opening and closing parts for the round ball core, mainly by the …

In the thermal system, the thermal trap plays a very important role, and its performance directly affects the stability and energy efficiency of the steam sy…

Harm and protection of abnormal pressure boost in gate valve

​Gate valves usually have single gate, double gate, wedge, parallel and other structural designs