General Questions about Hose/Tube
Question 20: How do we select a suitable product when two or more chemicals are mixed?
August 25,2024 General Questions about Hose/Tube
Answer 20: If two or more chemicals are mixed, the chemical resistance chart is not reliable. (We are not sure about how two or more chemicals affect the material A.) Thus, we strongly recommend you to obtain the sample and test it in the application. Please request a sample here.
Question 19: Do you have the information on the recommended outer diameter size of fittings for hose inner diameter size of I.D. 12mm (for instance)?
June 25,2022 General Questions about Hose/Tube
Answer 19: First of all, we always recommend you to use our original fittings, as the matching between our hose and fittings is guaranteed. However, in case you have no choice but to use the fittings produced by other manufacturers, our recommendation is that a fitting outer diameter size should be about 5-15 % bigger ...
Question 1: What is the lifetime of hose/tube?
June 02,2018 General Questions about Hose/Tube
Answer 1: We are afraid that we cannot set the general lifetime, since the lifetime of the hose heavily depends on using conditions and using environments. If you find the following features, we strongly recommend that it is time to replace into a new hose. ...Tear, Scratches, swelling, crack, curve, deformation, and exposure of reinforced ...
Question 2: What happens to the working pressure at a higher temperature?
June 02,2018 General Questions about Hose/Tube
Answer 2: As temperature goes up, hose/tube gets soften, leading to lower working pressure. Each product has technical data regarding "Relationship between Working Temperature and Maximum Working Pressure." Please check this data for each product.
Question 3: How do we cut hose/tube?
June 02,2018 General Questions about Hose/Tube
Answer 3: You can cut a tube with a tube-cutter. For a hose, you can cut with a knife or a hose cutter. To cut a spring hose, make sure to cut the spring wire off neatly with a nipper.
Question 4: In what ways do we dispose of hose/tube?
June 02,2018 General Questions about Hose/Tube
Answer 4: In case of disposing, please follow the local governmental regulations.
Question 5: What is the difference between burst pressure and working pressure?
June 02,2018 General Questions about Hose/Tube
Answer 5: Burst pressure is the value of pressure when hose gets burst after adding pressure to the hose. Usually, a yarn-casting off or pinhole bursting occurs when hoses get burst. Burst pressure is usually as four times as working pressure. Also, depending on the temperature, working and burst pressure might change.
Question 6: Why does the hose change the color into white if the hot water is transferred to the transparent PVC hose?
June 02,2018 General Questions about Hose/Tube
Answer 6: By pouring the hot water into the hose, the part of water molecule goes into the PVC hose. This is called moisture absorption. The hose looks like white if the water molecule goes into the PVC resin hose due to the fact that a refraction angle changes. If the hose turns white, there ...
Question 7: How do we measure a hose/tube when we cut?
June 02,2018 General Questions about Hose/Tube
Answer 7: Each hose/tube has a cut mark.
Question 8: If there are no HAKKO original fittings for hose, how do we select the best fittings?
June 02,2018 General Questions about Hose/Tube
Answer 8: Although there are some differences among materials of the hose, it is a good idea to select the fittings whose fittings are 1 - 2mm smaller against the outside diameter of the hose size. PVC hoses are more stretchable than other material hoses.
