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Protecting Your Peristaltic Pump–Kingdaflex

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Here are five questions we regularly receive on how to keep a peristaltic pump running reliably:

smarter ink pump

Can I use any hose on the market? Using a hose other than our recommended products can result in damage to the pump and considerable expense. Trying to save a few dollars by purchasing an “off-brand” hose, or to squeeze out extra run time, can have the opposite effect.
What’s the right hose for my pump? Peristaltic hoses are selected by KINGDAFLEX based on their physical size, the chemical resistance of the tube material and the resilience property of the tube. We offer a variety of hoses but our more expensive hoses give double the life and are a better value because they run longer, resulting in less changeover and downtime. According to our colleague, one of our seasoned sales representatives, “I encourage my customers to buy the more expensive hose because they are more reliable and offer better value.”
How often will I need to replace a hose? The average time a hose needs to be replaced varies based on multiple factors including press speeds and the number of hours the pump is used on a daily basis. A pump capable of marginally supplying enough ink flow for converters’ application demands will have to operate at a faster speed to supply enough ink. High speeds result in more compression cycles and will shorten the run life of the hose. A larger-capacity pump that can supply application requirements at a slower speed will provide better reliability and value. However, a pump that is significantly oversized for a low flow requirement may not be able to provide reliable flow at very slow rates. KINGDAFLEX can assist you in selecting the proper size.
When do I know it’s time to replace a tube? Even the proper hose is going to wear and it is important to know when to replace a worn tube before it reaches the failure point. When using the correct tube, wear is primarily a result of two factors, abrasion and mechanical fatigue of the hose material. Your Graymills rep can help you know when it’s time to think about a new tube.
Can I reduce abrasion on the hose? Yes. Abrasion can be substantially reduced by applying a slight amount of lubrication to the hose surface. If the roller on the rotor can compress the hose with minimal surface friction, the outer surface of the hose wears much more slowly. It is also important that the rollers be free-turning. If a hose has previously failed inside the pump head, it is crucial that the ink is thoroughly cleaned out and that the compression rollers, bearing and bushings are turning freely.
Summary: Hoses made for peristaltic pumps have the ideal qualities for their intended application. While cost-per-foot is higher compared to sub-standard hoses, they ultimately provide superior value and minimize pump problems in the long run.

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