S-series single-stage double-suction center-open centrifugal pump
Thread Content
Seeking expert advice: What is the difference between the S-series single-stage double-suction split-case centrifugal pumps and the double-wheel SS-series single-stage double-suction split-case centrifugal pumps? It’s the letter ‘S’ that differs between them
There shouldn’t be any difference; they are all models specified by the manufacturers. It’s possible that their parameters and configurations overlap or are identical. For example, the S pump sold by a double-suction pump manufacturer in Shanghai might be named SS
It might be an improved version, or perhaps the second generation. The specific installation dimensions and naming conventions may differ from the original ones.
Currently, manufacturers use chaotic naming conventions for their products, which results in poor compatibility of spare parts. Some manufacturers even deliberately include unnecessary elements in their products to maximize profits, which is detrimental to the development of the industry!
It’s the same old thing; the name doesn’t matter. What’s important is to pay attention to their flow rate, head, efficiency, as well as the design pressure, design temperature, and design and manufacturing standards. You can call it whatever you want
Even if there are improvements, they are made to suit the company’s processing characteristics or to prevent copying in the spare parts market under monopoly conditions. The main parameters will not change much; it are just minor adjustments, such as changing the seals or the connection dimensions. There are no substantial changes, as this pump has been tested in the market and is already quite mature. Manufacturers capable of improving it can at most increase the diameter of the impeller to raise the head pressure, expand the inlet area, or extend the blades toward the inlet to reduce cavitation. The adjustments are made in such a way that they only improve the performance of the pump, never degrade it. That’s all
Don’t just focus on the model number; check whether the pump’s appearance, structure, and flow channels are different. Nowadays, many manufacturers do not label the nameplates according to standard models, but instead use their own custom model numbers.
Is that what it means? . . You can ask the manufacturer
Generally speaking, the pressure rating of S-type double-suction pumps is below 1.0, meaning that the pump casing is relatively thin; the pressure rating for SS pumps is 1.6, and in some cases it is 2.5. Customers who buy products are mostly concerned about price and not about quality, because in their minds all pumps are the same.