Brady 4078-A BradySnap-On Pipe Marker - High Pressure Water, Size A
Brady 4078-A BradySnap-On Pipe Marker — High Pressure Water, Size A
The Brady 4078-A is a BradySnap-On pipe marker with the legend HIGH PRESSURE WATER, printed in black on a green background — conforming to ANSI/ASME A13.1 color coding for potable, cooling, and cold water systems. Size A fits pipe outside diameters of 3/4" to 1-1/4". Constructed from Brady B-915 material, the 4078-A is rated for indoor and outdoor use and can be applied to dirty, oily, greasy, or rough pipe surfaces without adhesive. The BradySnap-On design installs and removes tool-free — ideal for retrofits, temporary marking, and facilities where markers need to be repositioned. All stock markers meet ASME/ANSI A13.1 pipe marking standards.
Size A | Fits 3/4" – 1-1/4" Pipe OD | BradySnap-On Mount | Sold Individually
Industries & Applications
- Facilities Management & Plant Maintenance — ANSI/ASME A13.1-compliant identification of high pressure water lines in mechanical rooms, utility corridors, and process areas
- Manufacturing & Industrial Plants — Pipe identification in production environments where water lines run alongside process piping and clear differentiation is required
- HVAC & Mechanical Contractors — Quick snap-on installation during new construction or retrofit projects without tools or adhesive preparation
- Fire Protection Systems — Identification of high pressure water supply lines feeding sprinkler systems and standpipes
- Petrochemical & Utilities — Outdoor-rated marking on exposed water distribution piping subject to UV, moisture, and temperature cycling
Key Features
- Legend: HIGH PRESSURE WATER — black text on green background (ANSI/ASME A13.1 water systems color)
- BradySnap-On design — tool-free install and removal, no adhesive required
- Applies to dirty, oily, greasy, or rough surfaces
- Rated for indoor and outdoor use
- Lightweight and durable — can be removed and reapplied
- Meets ASME/ANSI A13.1 pipe marking standard
- B-915 material construction
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4078-A |
| Manufacturer | Brady |
| Legend | HIGH PRESSURE WATER |
| Text Color | Black |
| Background Color | Green |
| Size | A |
| Pipe OD Range | 3/4" – 1-1/4" |
| Mounting Style | BradySnap-On (snap-on, no adhesive) |
| Material | B-915 |
| Indoor/Outdoor | Both |
| Standard | ANSI/ASME A13.1 |
| SKU | 4078-A |
ANSI/ASME A13.1 Pipe Marking Reference
ANSI/ASME A13.1 defines pipe marker color coding by fluid class, marker size by pipe OD, and placement requirements. Key color assignments:
| Color | Fluid Class |
|---|---|
| Red | Fire quenching fluids |
| Orange | Toxic / corrosive fluids |
| Yellow | Flammable / combustible / oxidizing fluids |
| Gray | Compressed gases / steam / hot water |
| Green | Potable / cooling / cold water (this marker) |
| Blue | Compressed air |
Marker size selection by pipe OD per ANSI/ASME A13.1:
| Marker Size | Pipe OD Range | Letter Height |
|---|---|---|
| A | 3/4" – 1-1/4" (this marker) | 0.5" |
| B | 1-1/2" – 2" | 0.75" |
| C | 2-1/2" – 6" | 1.25" |
| D | 8" – 10" | 2.5" |
| E | Over 10" | 3.5" |
Placement requirements: Markers should be placed at valves, flanges, and where pipes pass through walls, floors, or ceilings; at changes in direction; and at intervals of every 25–50 feet on straight runs. Flow direction arrows should be used where direction of flow is not obvious.
BradySnap-On vs. Brady Strap-On Pipe Markers
| Feature | BradySnap-On | Brady Strap-On |
|---|---|---|
| Installation | Snaps directly onto pipe — no tools | Secured with strap around pipe |
| Surface requirement | Works on rough/oily surfaces | Works on any pipe surface |
| Repositionable | Yes | Yes |
| Best for | Smaller pipe OD, quick installs | Larger or irregular pipe OD |
Frequently Asked Questions
What pipe size does the Brady 4078-A fit?
The 4078-A is Size A, fitting pipe outside diameters of 3/4" to 1-1/4". For larger pipe, see Size B (1-1/2"–2"), Size C (2-1/2"–6"), Size D (8"–10"), or Size E (over 10"). Contact MTE Solutions to find the correct size for your application.
What does the green background mean on a pipe marker?
Per ANSI/ASME A13.1, green identifies potable water, cooling water, and cold water systems. The 4078-A — HIGH PRESSURE WATER on green — is the correct marker for high pressure cold or potable water lines under this standard.
How does BradySnap-On installation work?
BradySnap-On markers wrap around the pipe and snap into place without tools, adhesive, or pipe preparation. They can be applied to dirty, oily, greasy, or rough surfaces and removed and reapplied as needed — making them ideal for retrofit projects and temporary marking applications.
Is the Brady 4078-A rated for outdoor use?
Yes — the B-915 material is rated for both indoor and outdoor use, providing durability against UV exposure, moisture, and temperature variation on exposed piping.
Does the 4078-A meet ANSI/ASME A13.1?
Yes — all Brady 4078 series stock markers meet ASME/ANSI A13.1 pipe identification standards for legend, color coding, and size selection requirements.
