Custom Backflow Inspection TagsEngineered for Durability
Backflow preventer tags are used to provide auditable inspection records featuring key information like make, model, size and serial numbers as well as testing dates, pass/fail results, serial numbers, tester’s name and certification and more. They are ideal for ensuring one's business stays compliant with all regulations and providing a clear record of inspections.
Having produced backflow inspection tags for decades, our experienced design team can help specify the best sizes, materials, printing and attaching options for you needs.
Materials
When selecting the ideal material for your backflow preventer tag, it is important to first note whether these tags will be used indoors or out. If they are going to be used outdoors, it is best to specify a waterproof hang tag using a Tyvek or vinyl material. While paper tags can still be used for indoor applications, the fact that they tear more easily and are not water resistant often makes them risky to use. Keep in mind that if you specify a vinyl or Tyvek material, tell technicians that they will need to use a fine-point Sharpie or ball point pen to fill them out.

Shapes & Sizes
When it comes to determining the best size for your backflow preventer tag, the concept of form following function typically prevails. So, our tag designers often start by asking what you want printed on the tag and then use this input to specify the ideal size and shape. Given the functional nature of these tags, most customers opt for a standard sized rectangular - typically a #6, #7 or #8 - as these sizes offer the best value.

This image shows these three most popular sizes that our customers use to print back flow tags.
Colors & Printing
Thanks to our digital printing capabilities, St. Louis Tag can print tags in virtually any color with any messaging that you desire. We use highly durable inks that resist smudging or fading and typically print on both sides of the tag so our customers have plenty of room for their logo, branding, contact info and any other messaging.
With that said, since it is often more cost effective to utilize a one-color print on a colored tag, many of our customers will choose a colored tag. Vinyl is the most popular material used for printing backflow tags and its standard color options are listed below.
White
Red
Orange
Yellow
Green
Blue
Pink
Fluorescent
Green
Fluorescent
Pink
Fluorescent
Canary
Fluorescent
Orange
Fluorescent
Red
Attachments & Reinforcements
Losing a backflow preventer test tag can create a number of issues related to compliance and verification. The lack of physical proof provided on the tag related to the recent testing can lead to failed property audits, unnecessary re-testing fees, or utility compliance notices. For this reason, most backflow preventer tags are outfitted with wire attachments and reinforced with metal eyelets.
Wire (Recommended)
Due to their ability to withstand moisture, weather and rugged use, wire attachments are what we typically advise using on backflow tags. They come cut to length in standard in 21, 23 or 26 gauge, galvanized steel wire are and fastened to each tag prior to shipment.
Strings
While typically used more for indoor and less industrial applications, strings are another standard option for attaching backflow tags. Made from a standard cotton-blend string, these attachments provide a cost-effective alternative to the more rugged wire attachments.
No Attachment
Knowing that some customers customers prefer to utilize their own attachments (like zip ties, twist ties or security ties), we are happy to supply backflow testing hang tags that only feature reinforced holes.
Custom Printed Backflow Tag Gallery
At St. Louis Tag, we take pride in fully customizing backflow inspection tags to the exact requirements of our clients. Explore our custom backflow tag photo gallery below to discover our full range of capabilities and then request design assistance or a free quote.





