Buyer summary: The three products compared here include a twin pulse tube with a 7 mm bore and 26 mm overall profile width, a 7 × 13 mm pulse tube, and a 15.9 × 25.4 mm milk tube. Each lists 30 m and 50 m roll options. Overall twin-profile width is not the same measurement as the outside diameter of a single tube.
A request for ‘milking tube’ leaves several purchasing decisions unresolved. The tube may carry milk or serve the pulsation circuit, and a quoted size may describe the bore, outside diameter or a twin profile. Before comparing quotations, identify the line you are replacing and record what each measurement means. This milk tube size guide uses three listed ERRASONVET products to show how to prepare that information.
Prepare a tube quotation request
Product specifications at a glance
| Product | Product code | Listed specifications |
|---|---|---|
| Twin Pulse Tube for Milking Equipment | ERV-VI-MIL-00010 | Roll length options: 30 m; 50 m Bore diameter: 7 mm Overall profile width: 26 mm |
| 7 mm Bore Milking Pulse Tube | ERV-VI-MIL-00011 | Roll length options: 30 m; 50 m Inner diameter: 7 mm Outer diameter: 13 mm |
| 15.9 mm Bore Milk Tube | ERV-VI-MIL-00012 | Roll length options: 30 m; 50 m Inner diameter: 15.9 mm Outer diameter: 25.4 mm |
The listed dimensions help identify a configuration; they do not establish interchangeability. Tube material and operating limits are not specified in these three records.
Start with the line's purpose
Keep milk-tube and pulse-tube requests separate in your order list. Use the existing product code where available, then describe the line's function and the equipment connection. A similar appearance does not establish that a tube is suitable for another purpose. These three records support a dimensional comparison; they do not establish material approvals, temperature limits or compatibility with a named milking-system brand.
Record dimensions with their labels
Inner diameter describes the bore; outer diameter describes the outside of a single tube. Record both where the product specifies them. For the twin pulse tube, retain the source label ‘overall profile width’ for 26 mm. Do not copy that value into an outside-diameter column. Attach a photograph of the installed line and a labelled measurement image when requesting a replacement.
Choose the roll option and quotation unit
The three products below list 30 m and 50 m rolls. State the selected roll length and number of rolls rather than sending only a total metre requirement. If you need cut lengths, ask whether that format can be supplied; a listed roll option does not establish a cutting service or minimum order quantity. Keep different tube sizes on separate quotation lines.
Confirm requirements that a size table cannot answer
Tell ERRASONVET the intended connection and the operating or cleaning conditions that matter to your purchase. Ask for product-specific supporting information before assuming a material, cleaning compatibility, pressure rating or food-contact declaration. These points are not established by the listed dimensions. An equipment photo is useful context, but it is not a substitute for dimensional and application confirmation.
Common purchasing mistakes
- Ordering only by bore size and leaving the external dimension unspecified.
- Treating 26 mm twin-profile width as a single-tube outside diameter.
- Assuming material, service conditions or brand compatibility from the product photograph.
- Requesting a price per metre without clarifying whether the quotation is for complete rolls.
Frequently asked purchasing questions
What is the difference between the two 7 mm pulse-tube entries?
ERV-VI-MIL-00010 is a twin pulse tube with a listed 26 mm overall profile width. ERV-VI-MIL-00011 lists a 7 mm inner diameter and 13 mm outer diameter. Keep those external measurements in separate, correctly labelled fields.
Which milk-tube dimensions are listed in this comparison?
ERV-VI-MIL-00012 lists a 15.9 mm inner diameter and 25.4 mm outer diameter, with 30 m and 50 m roll options.
Can these dimensions confirm fit to my existing equipment?
They are a starting point. Send the existing part reference, connection dimensions and intended use for a product-specific review. This guide does not certify an interchangeable replacement.
Can I request a different roll or cut length?
You can include that requirement in your enquiry. Availability, order quantity and commercial terms need confirmation; they are not promised by this guide.
Request a Quote
For an itemised tube quotation, include:
- Product SKU: the code from the comparison table.
- Tube size: bore plus outside diameter, or the labelled twin-profile width.
- Quantity: selected 30 m or 50 m roll length and number of rolls; state any requested cut lengths separately.
- Destination country: where the order will be delivered.
- Additional requirements: existing equipment model, connector dimensions or photo, and any material or documentary requirements to confirm.
Request a Quote — enter the SKU in the product field, dimensions in specifications, roll quantity in quantity, and destination and extra requirements in their respective fields. Alternatively, open a product above and use its existing quote entry. Review your message before sending.