COVNA Valves & Actuators For Paper And Pulp

In 2022, the global pulp and paper production is expected to reach 490 million tons, with market size of USD 349.18 billion. Even under the influence of COVID-19, the market size is still growing steadily. More and more FMCG companies are willing to use paper packaging to replace plastic packaging. The paper industry is an industry that meets the needs of environmental protection. Its basic production process is beating, cooking, washing and screening, bleaching and alkali recovery. And the valve plays an important role in every machining process.

Below, we will introduce the valves that can be used in the paper and pulp industry for your reference, hoping to help you understand valves and choose valves. Any demand for valves, welcome to consult us at sales@covnavalve.com

In the beating process, we recommend ball and butterfly valves, their construction is ideal for pipelines that transport fluids with particles and fibers.

In the process of high-temperature cooking, if it is continuous cooking, it is necessary to control the pressure of the cooking tube, the throughput of ingredients and the liquid level value. In this regard, we recommend high-temperature resistant ball valves and butterfly valves that can withstand 180℃. If it is batch cooking, various materials need to be added to the large slurry tank in order and amount. We especially recommend the use of pneumatic control valves to receive feedback signals for precise adjustment of the input of each material.

In the process of washing and screening, it is necessary to remove impurities such as coarse slag and sediment in the coarse pulp. The knife gate valve, which is not prone to clogging, can effectively control parameters such as slurry concentration, slurry flow and slag discharge.

In the process of bleaching, in order to meet the whiteness requirements of the paper, various chemicals need to be added to the natural pulp (black pulp). We recommend corrosion-resistant ball valves and butterfly valves, which can withstand all kinds of strong alkalis and acids, so as to prevent the valves or pipes from being eroded and damaged, which will affect the progress of the project.

In order to ensure the stable production of the alkali recovery process and prolong the service life of the cleaning equipment, it is necessary to effectively and automatically control the concentration and flow of the separated black waste liquid (solid content of 10%). Therefore, we recommend a knife gate valve.

Ball Valve

The ball valve is a quarter-turn valve. Turn the handle 90 degrees to adjust the valve on/off. It can be customized into anti-corrosion type, high-temperature type, high-pressure type, etc. according to the needs of the project to ensure that your project can operate normally.
We offer ball valves in manual type, electric type or pneumatic type to fulfill your actuation needs.

Butterfly Valve

The butterfly valve is also a quarter-turn valve. Turn the handle 90 degrees to adjust the valve on/off. It can replace the material of parts, such as seals, valve plates, or valve body materials according to project requirements, to meet your project needs.
We offer butterfly valves in manual type, electric type or pneumatic type to fulfill your needs.

Knife Gate Valve

Knife gate valve is not easy to block due to its special structure. It can be used to control the flow and blocking of media containing solids or impurities.
We offer knife gate valves in manual type, electric type or pneumatic type to meet your needs.

Above are the valve recommendations that can be used in the paper and pulp industry. Hope this helps you better understand valves and choose valves based on your project needs.

What Is COVNA Anti-Corrosive PTFE Actuated Valve?

Some industries may be dangerous, we recommend the use of automatic anti-corrosion valves to ensure personal safety.

The automatic anti-corrosion valve has excellent anti-corrosion performance and can be used to control the flow, shut-off and flow control of strong acids and alkalis. Anti-corrosion valves are generally made of PTFE material. COVNA can provide PTFE solenoid valve, PTFE electric actuator valve and PTFE pneumatic actuator valve for your choice.

Features of PTFE solenoid valve include compact design, responsive, lowest cost, and easy to install.

PTFE electric actuator valve(Fluorine motorized valve) means a PTFE valve driven by electric actuator. Including electric PTFE ball valves and PTFE electric butterfly valves. Features of electric actuator include remote control, and IP67 weather-proof protection class. It could receive and feedback the signal to help you control remotely and locally. Available in ON/OFF type, modulating type and intelligent type.
● On/off type electric actuator for open/close fully.
● Modulating type electric actuator for regulating the angle of valve from 0 degrees to 90 degrees.
● Intelligent type electric actuator has the same function as modulating type actuator. But it has an LCD display screen to help you control remotely and locally.

PTFE pneumatic actuator valve(Fluorine pneumatic actuator valve) means a PTFE valve driven by pneumatic actuator. Including pneumatic PTFE ball valves and pneumatic PTFE butterfly valves. Features of pneumatic actuator valve include safe, explosion-proof and responsive. Available in spring return type(single-acting type) and double-acting type.
● Spring return actuator is air to open and once the air is interrupted, the valve will auto return.
● Double-acting actuator is air to open and air to close.

Applications of Actuated PTFE Valve

● Chemical
● Waste Treatment
● Wastewater Treatment
And any industries which require anti-corrosion.

Here is the automated PTFE valve for your reference. And hope it could help you select the suitable valve for your project.
Welcome any inquiries from you!

What Is COVNA Actuated 3-Piece Ball Valve?

The three-piece ball valve is a quarter-turn valve. Turn the handle 90 degrees to drive the ball to rotate, thereby opening or closing the valve. What is special is that this ball valve is composed of 3 parts, which are fixed by screws and bolts. Its advantages are easy disassembly, easy maintenance, long service life, and various connection methods to match various pipeline needs. Including thread, flange, clamp, welding and other connection methods.

3-piece ball valve are available in manual control, electric actuator control and pneumatic actuator control to meet your different actuation needs.

Electric 3-piece ball valve(motorized 3-piece ball valve) means a 3-piece ball valve equipped with an electric actuator. AC/DC power supply, then the electric actuator drive the valve open or close. Lead the labor free. Available in ON/off type, modulating type and intelligent type actuator for your options.

ON/OFF type actuator for fully open or close.
Modulating type actuator for regulating the open/close angle of valve from 0 degrees to 90 degrees.
Intelligent type actuator has the same function as modulating type actuator but it has an LCD display screen.
Modulating type and intelligent type actuator are available in signal control and Bluetooth control to help you control remotely.

Also, the electric actuator is available in explosion-proof type, IP68 underwater type, fail-open type and fail-close type to meet various special needs.

Pneumatic 3-piece ball valve means a 3-piece ball valve equipped with a pneumatic actuator. Features include the lowest cost, eco-friendly, and explosion-proof. Available in single acting(spring return) type and double-acting type actuator.

Spring return pneumatic actuator means air to open and the valve will auto return once the air is interrupted.
Double acting pneumatic actuator means air to open and air to close.

Also, a range of pneumatic accessories is available for you. To help you flow rate control easier and automated.

Applications Of Actuated 3-piece Ball Valve

● Wastewater and water treatment
● Automatic packaging machine
● Brewhouse
● Fish feeding system
● Irrigation
● Food and beverage
● Paper and pulp
And other automatic industries.

Here is the actuated 3-piece ball valve we provided. Hope it could help you know and selection. Also we welcome any inquiries from you and we are happy to help you solve the valve problem.