Can a pneumatic diaphragm pump be used when the medium temperature is above 60 degrees and continuous operation lasts for more than 8 hours?
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Can a pneumatic diaphragm pump be used when the medium temperature is above 60 degrees and continuous operation lasts for more than 8 hours? Why?
In the absence of any special requirements, the diaphragm of a pneumatic diaphragm pump should be made of polytetrafluoroethylene. A medium temperature of 60° should not pose any problem, and polytetrafluoroethylene also has excellent fatigue resistance, so continuous operation for 8 hours is feasible.
There’s definitely no issue with the material; at a temperature of 60 degrees for an extended period, the pump body will also reach 60 degrees. Is that acceptable? Will the components inside swell?
There’s definitely no issue with the material; at a temperature of 60 degrees for an extended period, the pump body will also reach 60 degrees. Is that acceptable? Will the components inside swell?
Look at the material of the pump body; if it’s metal, there’s no major issue. For plastic pumps, PP cannot withstand temperatures above 65 degrees, while PVDF is more suitable. Diaphragm pumps are best suited for transporting fluids at room temperature.
In my opinion, plastic materials, even PVDF, will lose their plasticizers when exposed to water at temperatures above 40°C for an extended period; they will swell due to water absorption, and eventually deform to the point where their functionality is affected.
This post was last edited by tianyewei on 2012-9-10 12:26. What is the medium? What is the maximum temperature? 60 degrees should be no problem; it’s best for the casing to be made of metal or fluorine-based material.
The stainless steel pump body with Teflon diaphragm can operate at 60 degrees for 8 hours without any problems
The temperature of non-metallic materials should not be too high; if it can be used at such temperatures, it’s okay. However, the equipment ages more quickly, which increases costs. These pumps are relatively expensive, and improvements need to be made in the manufacturing process rather than seeking breakthroughs in the equipment itself