High Temp. Sprinkler Water Pipe Marker
Item #
4S12B R/W
Wrap Around Marker Reads
Sprinkler Water
Wrap Around Marker Design
Directional Arrow

High Temp. Sprinkler Water Pipe Marker






  • 1–249
  • 250–499
  • 500+
0 In Stock
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Product Information


High Temp. Sprinkler Water Pipe Markers are used to identify piping systems in industrial environments that are expected to reach higher temperatures or harsh exposure to chemicals. System 4 Pipe Markers meet specification compliances for ANSI / ASME A13.1 standards for the identification of fire sprinkler system pipes. No pipe preparation is needed for these markers. Fire sprinkler water pipe markers are available in wrap-around and strap-on formats for pipe outside diameters ranging from 1/2 inch to over ten inches and provide 360 degree visibility.


High-Performance Pipe Markers

These markers are designed to withstand harsh chemicals, abrasion, and all weather conditions. The printed legend is laminated between two layers of polyester, creating an extremely durable product. These markers are available in 2 different types: snap-around markers that easily snap into place around a pipe, and strap-on markers that are helpful for labeling pipes with a large diameter.

For pipe diameters 1/2″ through 7-7/8″, use snap-around markers (Styles 4A, 4B, 4E, 4F); these markers will wrap around pipes and are secured in place by an overlapping clear adhesive strip.

For pipe diameters 8″ or larger, use strap-on markers (Styles 4G and 4H). These markers are laminated to a heat and chemical-resistant carrier that is then strapped onto a pipe with nylon ties or stainless steel strapping (ties and strapping are sold separately).

5 to 8 years
Service Temp
-40 °F to 248 °F (-40 °C to 120 °C)
Minimum Application Temp
Surface Prep
Spec Compliance
ANSI / ASME A13.1 2020
  • Wrap Around Marker
  • Strap On Marker

Marker Size, Letter Height and Maximum Characters per Marker

The following chart shows the recommended pipe marker letter height and marker size based on the outside pipe diameter of the pipe to be identified. For pipes smaller than 3/4" and for valve identification, the use of a permanent legible tag is recommended.

Pipe O.D. Text Size Marker Style Maximum Characters
1/2" to 1" 1/2" 4A 22
1-1/8" to 2-3/8" 3/4" 4B 18
2-1/2" to 4-3/4" 1-1/4" 4E 22
5" to 7-7/8" 1-1/4" 4F 22
8" to 10" 2-1/2" 4G 22
Over 10" 3-1/2" 4H 16

High-Performance Pipe Marker Styles

  • Illust. Of high-performance wrap-around pipe marker
    STYLE 4A (Wrap Around)
    Pipe O.D 1/2" to 1"

    Legend Size: 1/2" High
    Marker Size: 8" wide
  • Illust. Of high-performance wrap-around pipe marker
    STYLE 4B (Wrap Around)
    Pipe O.D 1-1/8" to 2-3/8"

    Legend Size: 3/4" High
    Marker Size: 8" wide
  • Illust. Of high-performance wrap-around pipe marker
    STYLE 4E (Wrap Around)
    Pipe O.D 2-1/2" to 4-3/4"

    Legend Size: 1-1/4" high
    Marker Size: 12" wide
  • Illust. Of high-performance wrap-around pipe marker
    STYLE 4F (Wrap Around)
    Pipe O.D 5" to 7-7/8"

    Legend Size: 1-1/4" high
    Marker Size: 12" wide
  • Illust. Of high-performance strap-on pipe marker
    STYLE 4G (Strap On)
    Pipe O.D 8" to 10"

    Legend Size: 2-1/2" high
    Marker Size: 24" wide
  • Illust. Of high-performance strap-on pipe marker
    STYLE 4H (Strap On)
    Pipe O.D. Over 10"

    Legend Size: 3-1/2" High
    Marker Size: 32" wide


The secondary means of identification is the color code of the marker. The exact colors are contained in the ANSI Z535.1 Safety Color Code.
Color is the secondary means to identification but many times the most important. The color of the marker should be used to identify the characteristic hazard of the contents of the pipe. The following chart list the classifications shown by ANSI / ASME A13.1 2015 as the suggested color combinations for the pipe markers.

ANSI / ASME A13.1 Designation of Colors

Fire Quenching Fluids Red Background With White Text
Toxic & Corrosive Fluids Orange Background With Black Text
Flammable & *Oxidizing Fluids Yellow Background With Black Text
Combustible Fluids Brown Background With White Text
Potable, Cooling, Boiler feed, & other Water Green Background With White Text
Compressed Air Blue Background With White Text
Defined by the User White Background With Black Text
Defined by the User Gray Background With White Text
Combustible Fluids Black Background With White Text


  • Marker visibility

Always position pipe labels on pipes to achieve the best visibility. Install pipe labels below or above the horizontal centerline of the pipe when pipes are located above or below the normal line of vision.

  • Pipe marker illustration
    Install pipe labels close to valves or flanges.
  • Plastic Lockout Hasp 428 C3504
    Apply pipe labels adjacent to changes in direction and/or branches.
  • Marker installation options
Install pipe labels before and after all wall, floor and ceiling penetrations.
  • Marker installation options
Install pipe labels at frequent intervals on straight pipe runs Brimar recommends 20 to 25ft.



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