Industrial users of sodium hypochlorite (NaOCl), especially its highly concentrated solutions must utilize pumps that: Will prevent any spills of this extremely corrosive and harmful to human substance. Will minimize high propensity of sodium hypochlorite to off-gassing during pumping process. PVDF, PTFE and Hastelloy are pumps body materials compatible with sodium hypochlorite. Diaphragm Pumps with …
Passivation is a chemical process of treating stainless steel in order to prevent rust by reducing chemical reactivity of its surface. Typically, nitric or citric acid solutions are used to remove free iron from the surface of stainless steel. The aim is to uncover chromium, that makes up at least 10% of the stainless steel. …
Difference between passivation and electropolishing Read More »
Solidification of the liquid which remain inside the pump for the certain period of time causes damage to the connecting rod, diaphragms holding plates, valves. Fluids prone to solidification (such as ceramic pulps, glue, resins, tars, bitumen, sludge, etc.), which harden when exposed to oxygen in the air, solvent evaporation, water evaporation and temperature shouldn’t …
Dry running is a one of the key features that differentiate Air Operated Diaphragm pumps from other types of pumps. In majority of the cases this will not damage the pump, nor its elements. This is why, AODD pumps are often used in applications in which the fluid may unexpectedly run out (sumps dewatering, tanks …
The selection of the pump for sulfuric acid (H2SO4) must always take into consideration the acid concentration with its specific gravity, temperature, and the working conditions of the pump. In general, it is difficult to find material which can resistance over all concentration range and temperature of sulfuric acid. There are only few special, expensive …
