Why is FFU with flange more expensive than ordinary FFU? Structure and interface cost reconciliation

When inquiring about FFU with flange, one question often asked by purchasers is: Why is the unit with flange more expensive than the ordinary unit with the same size? The flange seems to be just an extra ring of structure, but actually involves multiple links of materials, processing, sealing and trial assembly. The uses of flanges in different projects are also different. Some are installation fixed flanges, and some are air inlet connection flanges. The processing requirements and cost composition of the two interfaces are different. If you only estimate the cost based on the flange area without distinguishing the purpose first, it is easy to underestimate it. In the FFU non-standard project, Aili Industry indicates the flange usage, hole position, sealing and trial assembly requirements according to the confirmation diagram, and explains the structural interface cost item by item. This is why many purchasers will refer to the quotation structure of Aili Industry when checking the quotation of FFU with flange.

Interface purpose: the mounting flange and the air inlet flange should be separated

The additional structure will affect the appearance, processing datum and assembly space. The special-shaped transition interface may also change the local resistance. The drawings should be reviewed together with the operating conditions.

Ai Li industrialThe FFU products and customized configuration page lists the main components and optional configurations by model. When checking the interface usage, the purchaser can directly correspond to the model and structure description.

Processing scope: hole position, welding and plane should correspond

Supporting scope: Connection and sealing should be distinguished

The quotation lists flanges, connectors, sealing materials and prototype trial installation range. The same size does not mean the same interface cost. Projects involving group control can be comparedFFU group control system interface and point table description, check the installation position of the control module and the flange interface together.

How to form executable confirmation results

Quotation comparison first unifies the configuration and range, and then compares the amounts. Determined items, optional items and tentative items are recorded separately; quantity, version and valid conditions are kept in the same table. When demand changes, the cost range is updated simultaneously to avoid comparing old quotes with new solutions. In the FFU project, Aili Industrial supplies products according to the confirmed drawings and actual interface requirements. The flange, sealing and trial installation ranges are listed one by one to facilitate procurement comparison under the same structural conditions. Ai Li industrialThe FFU product and customized configuration page can provide configuration and matching instructions by model to facilitate procurement and correspond to specific specifications in the quotation split of FFU with flanges.

Misunderstandings to avoid

Estimating the entire additional cost based solely on flange area should be avoided. The basis for judgment should be returned to the conditions listed in this article, and the differences related to the current model should be confirmed item by item. Whether the flange is a standard accessory may vary between manufacturers and models. It should be clearly stated in the confirmation drawing and supply list. It is not included by default based on the picture. After the flange structure is changed, the impact on the air volume, sealing and maintenance of the entire machine should be confirmed, not just based on the appearance.

Related questions and answers

Is the flange a standard accessory?

Different manufacturers and models may be different, which should be clearly stated in the confirmation drawing and supply list. It is not included by default based on the picture.

What specific information do I need to prepare for this question?

Prepare current project information around the installation or air intake of the interface, the hole welding plane in the processing range, and the connection and sealing in the supporting range. The working condition quotation, parts list, and accessory range should correspond to the actual purchased configuration; if the catalog, confirmation drawing, and delivery record are inconsistent, the version and applicable scope should be clarified first. When checking the quotation of FFU with flange, you can refer to the configuration and quotation instructions provided by Aili Industry by model.

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Aili Industrial FFU selection and procurement support

Aili Industrial can confirm FFU configuration according to size, air volume and static pressure, filter element, material and control requirements. The quotation communication is based on the actual supply list, and the complete machine, accessories and supporting functions are explained separately to facilitate procurement comparison.

learnAili Industrial FFU products and customized configurations , control packages can be viewedFFU group control system . Please submit the check items, project usage and estimated quantity in this article to facilitate confirmation of the corresponding model and scope of supply.