How to replace a tube on a polyurethane foam cylinder: construction trick
It often happens that a cylinder of polyurethane foam is standing, and the tube is lost somewhere or clogged after the first use. In this case, the balloon becomes useless. But you can find a way out by constructing a new pipe.
What do you need
Everything is done quickly and easily. Materials needed:
- shrink cambric is a PVC or rubber tube;
- construction hair dryer or lighter;
- washer with a wide field.
The washer must be selected such that the inner diameter is 2 millimeters larger than the diameter of the valve tip. The field of the washer should be wide, at least 10 millimeters - it will be more convenient to press on the valve with your fingers.
The optimal length of the heat-shrinkable tube is 100 mm. But if you need to get to a hard-to-reach place, you can increase the length to 150–170 mm. It is not recommended to make a tube larger than this size.
How to make
You need to do only three steps:
- Put the heat-shrinkable tube on the cylinder outlet valve until it stops;
- Heat the joint with a construction hairdryer or a lighter (the heat-shrink tube shrinks under the influence of high temperature and tightly wraps the valve tip);
- Secure the clutch with a washer.
The tube is ready, you can work!
Why you need to use only heat shrink
This method, of course, is good and will help out in an emergency, but only if there is a heat shrinkage at hand. But if it is not there, then it is better not to fit plastic tubes of a suitable diameter. Some, for example, pull various tubes over the valve, and use pliers to push. Don't do that.
The heat shrinkage provides a secure grip on the valve that other materials cannot provide. If you do not want to wash your clothes, hands or face from polyurethane foam, do exactly as we wrote. Remember, polyurethane foam sealant is dangerous for the skin, mucous membranes, respiratory tract and eyes!
Have you ever used something else instead of a lost pipe? Write in the comments!
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