When purchasing flanged electric heating tubes, how can you determine whether a batch of products is easy to maintain later and whether replacement will affect production? The following points provide reference from the perspective of maintenance and precautions.
Check whether the flange specifications (commonly DN50mm to DN300mm), tube material (No. 10 steel, stainless steel, or copper), and power (1.5KW to 30KW, etc.) match the equipment interface. Inspect the surface of the electric heating tube for scratches and check whether the flange sealing surface is flat, so as to avoid early leakage caused by bumps during transportation.
Regularly clean scale or carbon deposits on the tube wall to prevent overheating of the tube body caused by poor heat dissipation. If heating static or flowing air, water, oil, nitrate, alkali, or other media, confirm that the liquid level is always above the heating zone to avoid dry burning. When the temperature control probe is welded on the flange, check whether the wiring is loose to ensure accurate temperature signals.
The integrated foldable structure facilitates replacement of a single electric heating tube without draining the entire system. During disassembly and assembly, cut off the power and allow cooling, and tighten the flange bolts evenly to prevent the sealing gasket from skewing. Threaded connection specifications are commonly G1/2 to 2 inches; avoid excessive force during installation to prevent damaging the threads.
It is mostly used in places requiring heating such as electric water boilers, electric boilers, solar water tanks, chemical pools, bathing pools, and swimming pools, and can also heat static or flowing air, water, oil, and alkaline liquids. When purchasing, the tube material and flange material should be selected according to the characteristics of the medium, and maintenance space should be reserved.
