Flanged and coupling ball valve - characteristic and choice

When repairing or replacing plumbing or heating systems, there is a need to purchase and install valves and taps. Ease of use of the device in the future depends largely on its quality and the correct choice, in addition, the risk of an emergency situation will be minimal. In order not to spend extra money, buying a ball valve KShTsF or clutch, you must first understand their design.

Each sanitary device has its own functions that must be considered when choosing. We will help you to determine which is better to use ball valves in your case.

Flanged ball valve

The device is designed to block the flow of water, air, steam, oil. The locking element is shaped like a ball, which has a horizontal through-hole for the passage of a substance. When rotating on the vertical axis of the ball, the passage opens or closes.

Flanged ball valves are used at a temperature of flow or medium above 100 ° C and a pressure in excess of 16 bar. Typically, devices are installed when the clutch valves are unable to cope with their work due to high temperature or pressure parameters.

Tip: the valve must always be turned when closing or opening until it stops, otherwise deposits will appear in the product itself, which will break its tightness, as a result of which the equipment will either have to be repaired or replaced.

The valve is designed with a sealing ring with a hole in the middle, the valve is considered open when it coincides with the direction of flow. Otherwise, when the valve is installed perpendicular to the walls of the pipeline, the device is considered closed.

Classification

Select three parameters:

Tip: when choosing a product, pay more attention to the quality of its details, it will be a guarantee of its effective and long work. Also find out for which medium this device is intended, and for what temperature.

Installation

It is necessary to use flanges that can withstand the pressure in the network. It is also important that they are placed and fixed as smoothly as possible.

Tip: it is allowed to install additional supports on the valve if it has electric drives.

After the completion of the installation work it is necessary to double-check everything again. For example, so that chips and scratches do not appear on the through holes, they should be protected. We recommend to remove the production packaging before installation.

Characteristics of the equipment

Highlight the positive technical characteristics of the ball valve flange type:

• long term of use;
• provides a high degree of tightness overlap flow;
• has small overall dimensions;
• reliable and simple design;
• creates a small hydraulic resistance in the system;
• can be mounted in any working position;
• maintenance is optional;
• opening and closing of the valve does not cause difficulties;
• if the crane has a collapsible body, it can be repaired with your own hands;
• manual control can quickly shut off the flow of fluid.

Of the disadvantages stand out:

• big weight;
• high price;
• the need to use long handles for manual control.

Features of the design of the coupling valve

1. Products are widely used in industry.
2. The design is able to withstand pressures up to 16 atm and temperature of the working medium up to 120 ° C.
3. The best material for such cranes is brass. Not only the body is made of it, but also the ball.
4. Alloys and chrome-plated steel are also often used to prevent rust.
5. To reduce the flow resistance, the coupling version of the crane is designed with the condition that its internal diameter coincides with the diameter of the passage of the pipeline.
6. Since the valve stem does not touch the case, it sticks to its rule. This is ensured by fluoroplastic gaskets that withstand the high temperature of the working medium and high pressure.

How to choose

1. Before you go to the store, measure the cross-section of the pipeline, the internal dimensions of the ball valve must coincide with it.
2. Write down the label of the old tap or take it with you.. Consult an in-store consultant for additional hardware details.
3. Visually assess the quality of the product, for example, whether it has a trademark and detailed labeling. Find out if there is a quality certificate for products and manufacturer's instructions.
4. Additionally, check if there is a translation into Russian in the main instruction, which indicates licensed sale of imported goods.

Important: If it is unclear how the product got on the counter, there will be a clumsy translation, discrepancies in the logos and inscriptions, or there is not only the production date, but also the manufacturing country, then the quality of such a product is very doubtful.

1. Please note that the surface of the crane should not be chipped and cracked protective coating, flows, irregularities, paint lag on the rotary knob. Quality product has the same thickness of the shell and symmetrical parts.

1. With a magnet, check what metal the ball valve is made of. Ideally - from brass, a fake - steel. In addition, the dim mirror surface of the ball also confirms that you are holding low-quality goods.
2. The body must be made of brass, except chrome-plated faucets. Forgery is made of silumin or galvanized. The color of the metal inside the product should be light yellow, the coating should not be scratched.

Tip: Remember a simple thing - a quality product cannot be cheap.

Conclusion

Now you have an idea about the flange and coupling ball valves, for what they are needed and where they are used. After getting acquainted with their performance data, you will be able to consciously approach the choice of the necessary product.

The video in this article will provide an opportunity to find additional information on the above topic.