Seeking advice regarding the size of the inlet and outlet pipes for the pump
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I encountered the following situation when purchasing a pump. Based on the flow rate and head parameters provided by us, the manufacturer specified the model of the pump as well as the size of its inlet (the flange size; the pump body is presumably made of cast material). It was also determined that the inlet pipe of the pump is generally smaller than the pipes used for feeding and discharging the material. Our technical requirements were that the inlet and outlet flanges of the pump should match the size of the pipeline flanges; we asked the manufacturer to cut off the existing cast flanges and weld on new flanges that are one or two sizes larger than those on the original pump casting. I really don’t see what sense there is in this Is it really to save a reducer?
Effective communication still needs to continue. Generally, the specifications of pumps are fixed, and special customizations also require consultation with the manufacturer. For ordinary castings, the welding flanges cannot be cut off arbitrarily. The strength does not meet the requirements. The pump’s product brochure can be given to the designer for reference when making a choice; if special requirements are needed, he can come up with a proposal. If it involves prices, just report it upward. Do what can be done, and report to those above if something cannot be accomplished. A person's scope of work is limited, with the goal of solving problems.
I’ve never seen anyone make such a request; you should ask him why he wants to do that For the installation of pumps, generally, the inlet pipe should be 1–2 sizes larger than the pump’s inlet diameter, while the outlet pipe is usually 1 size larger than the pump’s outlet diameter; in both cases, this is achieved by using larger pipe fittings. .
The design of the pump takes into account parameters such as flow rate and head; it only needs to meet the requirements of the production process. A reducer can be used at the inlet and outlet to address this issue. There is no point in cutting off the flanges at the pump’s inlet and outlet, as the flow path is fixed.