Easy maintenance | Ball valve | Factory direct sales

Easy maintenance | Ball valve | Factory direct sales

The ball of the ball valve is fixed and does not move after being pressed. The fixed ball valve is equipped with a floating valve seat. After receiving the pressure of the medium, the valve seat will move, so that the sealing ring is tightly pressed on the ball to ensure sealing.
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Exquisite craftsmanship

Exquisite craftsmanship

Stick to the spirit of ingenuity CNC precision machining 20 years of technical engineer guidance

Technological innovation

Technological innovation

High-tech foundation Insist on innovation and development Senior technical talent team

Special custom

Special custom

Torque up to 4678nm Senior technical guide selection Special customization according to customer needs

Consistent quality

Consistent quality

ISO9001 international certification Adhere to standardized production processes 1 million cycles durability test

How Ball Valves Work

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. 

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Ball valve wear-resistant

Since the valve core of the hard-sealed ball valve is spray welded with alloy steel, and the sealing ring is welded with alloy steel, the hard-sealed ball valve will not produce too much wear when it is switched on and off.

Ball valve wear-resistant

Ball valve by function

1) Bypass valve: The ball valve is generally opened by static water, so the bypass valve is set to be flat pressure first, that is, both sides are filled with water;
2) Air valve: when filling with water, the buoy will automatically close the valve when the air is removed; when draining, the buoy will drop by itself when it is used for replenishing air;
3) Pressure relief valve: when opening and closing the valve, remove the pressure water between the valve and the sealing cover to avoid wearing the sealing cover;
4) Sewage valve: drain the sewage in the lower part of the ball shell.

Ball valve by function

Ball valve press drive

1) Pneumatic ball valve
2) Electric ball valve
3) Hydraulic ball valve
4), Pneumatic-hydraulic ball valve
5) Electro-hydraulic ball valve
6) Turbine drive ball valve

Ball valve press drive

Long service life of ball valve

It has been widely used in petroleum, chemical, power generation, papermaking, atomic energy, aviation, rockets and other sectors, as well as in people's daily life.

Long service life of ball valve
User Reviews

What users say about COVNA

The workmanship is in place, and the quality is very good at a glance!

Leo

Regular customers, the cooperation has been very happy!

Worlds

The workmanship is fine, the size is right, the design is in place, and the service is attentive and attentive!

Kepler
Frequently Asked Question

Do you have any question?

Ball valves are valves which permit or halt the flow of media through a pipeline. A typical ball valve includes an inlet, outlet, and a housing for the valve itself, which is commonly a spherical shape and hollow. A stem--which fits snuggly into a slot at the top of the ball--rotates the ball to an open or closed position.

The ball valve is composed of valve body, sphere, valve seat, valve stem, bracket and driving device.

The working principle of the ball valve is to make the valve unblocked or blocked by rotating the valve. The ball valve switch is light and small, can be made into a large diameter, reliable sealing, simple structure, convenient maintenance, the sealing surface and the spherical surface are often closed, and it is not easy to be eroded by the medium. It is widely used in various industries.

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