How to disassemble the lid of a thermos with a button?

A thermos is a necessary thing in every family. Hiking or just a long walk in the forest is not complete without a strong, hot drink. In order for it to work properly, it is important to monitor the cleanliness and serviceability of the components. The lid with the valve is considered the “weak point” of thermoses.

Disassembling the cap with valve: step by step

There are two types of lids: some with the usual valve exactly in the middle, and others with two. Moreover, both types open perfectly and can be repaired if you find the necessary spare parts. To disassemble the lid of a thermos with a button, there are several simple methods for several types of button devices. Let's talk about this in more detail.

It is important to know that unscrupulous manufacturers seal plastic, excluding disassembly. As a rule, their goal is to sell the largest number of similar products.

Regular cover

The simple mechanism with one valve is easy to disassemble. Every adult can cope with this task. To disassemble the lid of a thermos with a button, just follow a few simple steps, following the instructions:

1. Without using a mechanic's tool, carefully unscrew the clamping ring. Otherwise, it is easy to damage.
2. The valve is removed completely, pushing it out and continuing to disassemble for parts.
3. There are three large parts left that are disassembled down to the smallest detail.
4. We also disassemble the fasteners.
5. It is important to leave the retaining ring undamaged; to do this, the valve stem is pushed out extremely carefully.

After checking and washing the parts, we assemble the cover in the reverse order. If one of the small parts needs to be replaced, we purchase it at a hardware store.

With two valves

The presence of a second button complicates the task. But the manufacturers have provided for the possibility of disassembly.

1. The lid is pryed off with a thin blade or other sharp object. Act carefully so as not to damage the mechanism.
2. After removal, the details will be in full view.
3. We divide them into separate fragments and wash them thoroughly.

We recommend that you take photographs of each stage during disassembly and first take a photo of the assembled cover. This makes it much easier to return the valve to its previous appearance.

Mechanism design and basic principles of operation

There is nothing complicated about the operation of the button, enclosed in a plastic cover. It opens immediately after pressing. The liquid is poured into a glass by tilting the container. By pressing the inner spring, we restore the valve to its place, closing the hole.

The mechanism is made of special, temperature-resistant plastic. It does not harm the user's health.

Often, the manufacturer, trying to improve the system, supplements the valve with small parts. For example, to ensure tight closure or smooth opening. Breakdowns happen frequently, and harmful substances and bacteria accumulate inside.

Users take care of their thermos in several ways:

• soak all parts in a soda solution for a long period;
• washed in the dishwasher;
• disassembled into spare parts and cleaned mechanically.

Why is parsing required?

The food-grade plastic from which the top of the thermos is made is durable, but tends to wear out quickly. To prevent this from happening, cleaning and replacing obsolete parts is carried out in a timely manner.

Thus, there are two reasons for disassembly: breakdown and contamination.

Don’t be afraid to carry out a technical inspection of the thermos lid at home. With careful manipulation and the ability to act as effortlessly as possible, it will be as good as new and will get rid of unpleasant odors, dirt and harmful bacteria.

Follow these simple recommendations in our article and enjoy a long service life of your thermos.