Features
Why Choose COVNA?
Exquisite craftsmanship
Stick to the spirit of ingenuity CNC precision machining 20 years of technical engineer guidance
Technological innovation
High-tech foundation Insist on innovation and development Senior technical talent team
Special custom
Torque up to 4678nm Senior technical guide selection Special customization according to customer needs
Consistent quality
ISO9001 international certification Adhere to standardized production processes 1 million cycles durability test
We Have The Best Solutions for Your Business
COVNA Industrial Automation Co., Ltd. was established in 2000, an automated valve specialist. Headquartered in Dongguan China, with 3 production bases located in Ningbo, Wenzhou and Dongguan.
We Provide Electric Valve，Solenoid Valve，Pneumatic Valve，Electric Gate Valve，Electric Butterfly Valve，Pneumatic Control Valve，Motorized Valve，Pneumatic Knife Gate Valve，Control Valve Pneumatic，Pneumatic Actuated Valve，Motorized Operated Valve，Electric Ball Valve，Electric Actuated Ball Valve，Ball Valve，Gate Valve，Gate Valve，Butterfly Valve，Globe Valve，etc, You can browse related products and initiate consultations on our website.
Top Quality Electric Valve
The electric valve is a high-end product in the automatic control valve. It can not only realize the switching function, but the regulating electric valve can also realize the valve position adjustment function. The stroke of the electric actuator can be divided into two types: 90° angular stroke and straight stroke. Special requirements can also meet the full stroke of 180°, 270°, and 360°. The quarter-stroke electric actuator is used in conjunction with the quarter-stroke valve to realize the internal rotation of the valve within 90° to control the on-off of the pipeline fluid; the straight-stroke electric actuator is used with the straight-stroke valve to realize the up and down movement of the valve plate to control the on-off of the pipeline fluid.
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Frequently Asked Question
Do you have any question?
Compared to their pneumatic and hydraulic counterparts, electric valve actuators provide a more energy-efficient, clean, and quiet method of valve control. They can be bought together with the valve as a package or as a separate unit and added onto an existing quarter-turn valve.
Electric valves generally have a large pipe diameter and are used to control the flow, cut-off, flow, pressure, etc. of fluids. The ones that perform flow and cut-off control are called electric on-off valves (some can only be opened or closed, and some can be stopped in the middle. There is a general adjustment, such as 25%, 50%, 75%, 100%). The flow and pressure control are called electric control valves, what are electric ball valves, electric disc valves, and what are called smart control valves. Are actually electric valves
There are three states of on/off/stop. The solenoid valve used for the on-off valve is the electric control valve for regulation. There are two types of electric actuators, one is to use contacts to control in three positions, open, close, and stop, the other is that the electric actuator is controlled by a 4-20MA current signal to achieve continuous adjustment!
Our updates and blog posts
electric-valve | Where the butterfly valve is applicable
{keyword},Butterfly valves are suitable for flow regulation. Since the pressure loss of the butterfly valve in the pipeline is relatively large, it is about three times that of the gate valve.
electric-valve | Application of electric butterfly valve
{keyword}.Electric butterfly valves belong to a variety of electric valves and electric regulating valves. Electric butterfly valve connection methods mainly include
electric-valve | How to choose electric butterfly valve
{keyword}.The disc of the butterfly valve is that the disc has a shaft rotating on the position of the valve seat. The angle of the rotation determines the opening and closing degree of the valve.