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Fluids Handling

Bürkert Solenoid Valve Tackles Dezincification And Water Hammer

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Automated control of water systems, whether in swimming pools, washrooms, or drinking water supplies, needs reliable equipment that minimises water hammer and the effects of dezincification.

Bürkert’s Type 6213 solenoid valve achieves this and can be specified to meet even the most demanding applications. It is available through the company’s e-commerce site and local valve suppliers.

Plumbers and maintenance staff often come across solenoid valves that control water flow, usually when the issues have been raised with the application, such as leaking valves or water hammer noise in the pipework.

Finding suitable replacements or spare parts has now become easier and quicker, thanks to Bürkert’s wide range of specifications that can be applied to the Type 6213.

Any water system operating with mains supplies, can be at risk from dezincification. This is a process where chlorine attacks soft brass components and is especially prevalent when the water is stationary for extended periods of time.

While the main fluidic parts are made from hardened brass, some of the smallest, more intricate components are very often made from softer brass.

For situations such as toilet cistern systems located in schools which are unused during holiday periods or swimming pool top-up systems that are dormant during the winter, dezincification can be a challenge.

In these applications, it is better to use materials in the construction of the valves that are better-suited to the conditions. This can include the use of hardened brass components throughout or the use of stainless steel in place of the soft brass.

The challenge of water hammer, however, can affect any water system that has a valve installed in it. If the valve is closed too quickly the sudden increase in pressure causes a shockwave to travel along the pipework. The magnitude of the pressure increase can also cause problems for other pieces of equipment that are installed in the system.

Bürkert’s Type 6213 has a soft-close feature, which means that the opening and closing sequences are gradual, compared to a standard direct acting solenoid valve. This minimises any pressure rise and has been proven in a test that was conducted with a competitor’s valve.

With a 4 bar inlet pressure, there was almost 38 bar observed when the competitor’s valve closed. This can have serious consequences for other pieces of equipment, such as pH probes, which may be designed with a maximum operating pressure of 10 bar.

A competitor’s solenoid valve caused a 38 bar pressure spike
A competitor’s solenoid valve caused a 38 bar pressure spike

In contrast, when the Type 6213 was closed the pressure increased to around 6 bar, well within the permissible operating pressures for other pieces of equipment.

Bürkert’s Type 6213 valve created a maximum pressure of 6 bar, avoiding the risk of water hammer
Bürkert’s Type 6213 valve created a maximum pressure of 6 bar, avoiding the risk of water hammer

When maintenance professionals discover these issues, customers need a solution quickly so Bürkert and its network of retailers have stock of the most common specifications to ensure same-day or next-day delivery.

With nominal diameters from 10 mm to 40 mm and a range of body and seal materials, the Type 6213 can also be specified for a wide range of applications beyond potable water.

For more information visit click here!

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Burkert Fluid Control Systems

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About us

Bürkert is present in thirtyfive countries around the world. We also work with a large network of distributors and partners, which means we are as close as possible to our customers. This global presence ensures full service and support to all of our customers in every country around the world. Research is the lifeblood of our company.

At Bürkert, we are never satisfied with the status quo and are continually seeking new technologies and solutions for our customers. Every year, our people develop new and highly advanced products and solutions, ranging from integrated process measurement and control units to the most sophisticated systems used in pharmaceutical research. To be a market leader, we are also an R&D leader.

Therefore, our investment in research & development is one of the highest in our industry. In our research centres in Germany and France, 150 people are committed to working for a common future for our company and our customers. We are committed to offering our expertise wherever it is needed, anywhere in the world. This global presence ensures that our advances in fluid control technology are also global.

What we do in a nutshell

Manufacture of process equipment. One of the few manufacturers to provide solutions for the complete control loop.

Where we supply to

UK Ireland, Europe

Industries we supply to

Food and Beverage, Pharmaceutical Cosmetics Toiletries, Water and Wastewater

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