emailsales@covna-china.com +8613729936450
search

BLOG

Subscribe to us and get update information from COVNA

BLOG
TAGS
actuator(1)
angle seat valve(2)
Automatic Valve(2)
Ball valve(8)
Butterfly Valve(6)
Check Valve(2)
Common faults of motorized valve(1)
Control Valve(1)
covna(15)
COVNA Exhibition(12)
COVNA gate valves(1)
covna solenoid valve(1)
COVNA valves(9)
electric actuator(2)
Environmental Protection Industrial(2)
Ex-Proof Flange Ball Valve(1)
Gate Valve(3)
gate valve featutres(1)
globe control valve(1)
Globe Valve(3)
high pressure solenoid valve fearures(2)
IoT valve(1)
Lug Butterfly Valve(1)
Motorized valve(17)
pneumatic actuator(2)
pneumatic ball valve(8)
pneumatic butterfly valve(10)
Pneumatic control valve(3)
pneumatic solenoid valve(2)
pneumatic valve(13)
pressure relief valve(1)
PTFE butterfly valve(1)
PVC Valve(1)
Relief Valve(1)
safety relief valve(1)
Safety Valve(4)
sanitary ball valve(1)
Sewage treatment(1)
solenoid valve(3)
Wafer Butterfly Valve(2)
Water Treatment(1)
The 5th Donation Activities to Yalong Hope Primary School
Company News,

The 5th Donation Activities to Yalong Hope Primary School

  Since 2015, we have held four Hope School donation activities, and we will set off again this year to deliver supplies to these children. This campaign was initiated by the COVNA Group and many socially responsible companies are involved in donating in different ways. To make the lives of these children better. It is […]

Nov.15.2021
Valve Installation Guide
Blog,

Valve Installation Guide

Before installation You need to check the valve. If you use the flange connection method. The flange faces need to be free of dirt, grease, or any surface defects that may cause leakage. Also, the connecting pipeline should be free of any foreign materials, such as rust or welding slag that could damage the seat […]

Nov.09.2021
The difference between electric valve and solenoid valve
Blog, Valves Study,

The difference between electric valve and solenoid valve

Solenoid valves and electric valves have similar functions, which may make it difficult for people who do not know them to distinguish. Let’s talk about their differences to distinguish them The structure is different: The solenoid valve consists of a coil, a valve body, a pilot head, and a rubber pad. The electric valve consists […]

Oct.29.2021
The 15th COVNA Environmental Protection Industrial Salon Conference of 2021
Seminar,

The 15th COVNA Environmental Protection Industrial Salon Conference of 2021

COVNA 15th Environmental Protection Salon and Environmental Engineering Technology Summit concluded successfully. On October 23, it was supported by the School of Environmental Science and Energy, the South China University of Technology, Guangzhou Environmental Protection Industry Association, Shenzhen Evergrande Xingye Environmental Protection Co., Ltd., Guangdong Qihua Industrial Equipment Co., Ltd.; Guangzhou Nengmiao Environmental Protection Technology […]

Oct.27.2021
What‘s the reason solenoid valves fail to work after energized
Blog, Valves Study,

What‘s the reason solenoid valves fail to work after energized

In hydraulic systems, solenoid valve failures are also more common. Today, I will analyze the reasons for the failure of the solenoid valve to fail to work after it is energized. Where is the problem? The following are some of the reasons for the failure and the treatment methods summarized by the editor. 1. Inconsistent […]

Oct.11.2021
What’s the difference between pneumatic butterfly valve and electric butterfly valve?
Valves Study,

What’s the difference between pneumatic butterfly valve and electric butterfly valve?

The electric butterfly valve can be controlled by various voltages such as alternating current (AC) 380V or direct current (DC) 24V, and the intelligent control module can be used to input 4-20MA signals to adjust the control flow more accurately. The characteristics of electric control are convenience to control, high automation program, and electric actuators […]

Oct.08.2021

2022 COVNA GROUP All Right Reserved.Huaqiutong| Privacy Policy | Terms & Conditions

Sitemap
whatsapp
email
go to top