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Product Information
The Spare Air Dial Gauge (p/n 003DGS) is an optional pressure indicator upgrade for Spare Air emergency air systems, replacing the standard pin-style indicator with an analog dial that reads actual tank pressure in both PSI and BAR at a glance. Spare Air units are filled to a standard full fill pressure of 3000 psi, and this gauge is designed to track that pressure accurately as the cylinder is used or refilled.
Who it is for
This upgrade is for any diver carrying a Spare Air emergency air system who wants a faster, easier way to confirm how much backup air is available before and during a dive.
Key details
- Full fill pressure for Spare Air units is 3000 psi.
- Dial face is 30 percent bigger and easier to read.
- Neon yellow indicator improves visibility at a glance.
- Displays pressure in both PSI and BAR.
- Fixed threading keeps the gauge face oriented correctly, eliminating the random-position issue of older gauges.
- Gauge face uses a green zone for safe air levels and a red zone to flag when a refill is needed.
- Reads in 200 psi increments with a 1000 psi numerical readout.
- Durable brass construction.
- Made in USA.
Compatibility and sizing
The Dial Gauge is designed as an accessory for Spare Air emergency air systems and can be factory-installed on a new unit or installed into a Spare Air you already have. If you are unsure whether it fits your specific Spare Air model, our team can confirm compatibility before you order.
DiveCatalog.com is an authorized Spare Air dealer and a dive shop based in Irvine, California, since 2003. Call or chat with us if you have questions about fit, installation or compatibility with your specific Spare Air unit.
- Bigger dial face: 30% bigger, easier-to-read face.
- Neon yellow indicator: improves visibility of the pressure needle at a glance.
- Dual unit display: shows pressure in both PSI and BAR.
- Fixed orientation threading: the gauge always displays right-side up, no longer randomly threaded.
- Color-coded zones: green zone for safe air levels and red zone indicating a refill is needed.
- Readable increments: 200 psi increments with a 1000 psi numerical readout.
- Durable brass construction: the gauge body is made of brass.
- Made in USA.
- Flexible installation: can be ordered pre-installed on a new Spare Air or retrofitted onto an existing unit.
| Part number | 003DGS |
| Full fill pressure of Spare Air units | 3000 psi |
| Pressure increments | 200 psi increments with 1000 psi numerical readout |
| Display units | PSI and BAR |
| Indicator zones | Green (safe), Red (needs refill) |
| Construction | Brass |
| Dial face | 30% bigger, easier-to-read face with neon yellow indicator |
| Orientation | Fixed-thread design, always displays correctly |
| Country of origin | Made in USA |
⚠️ WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
Frequently Asked Questions
Can I install the Spare Air Dial Gauge myself?
Yes. The Dial Gauge can be installed into a Spare Air unit you already own, or you can order a new Spare Air with it pre-installed from the factory. If you are not comfortable doing the installation yourself, contact our shop and we can help or advise on the process.
What do the green and red zones on the gauge mean?
The green zone indicates a safe air level in your Spare Air cylinder, while the red zone signals that the unit needs to be refilled. This color coding lets you check your remaining emergency air supply at a quick glance instead of reading exact psi numbers.
What pressure does a Spare Air unit hold when full?
A Spare Air emergency air system has a standard full fill pressure of 3000 psi. The Dial Gauge tracks pressure down from this full level in 200 psi increments with a 1000 psi numerical readout, so you can monitor how much backup air remains.
Will the Dial Gauge fit any Spare Air model I own?
The Dial Gauge is built as a compatible accessory for Spare Air emergency air systems in general. Because exact fitment can vary by specific Spare Air model and year, call or chat with our team with your model details so we can confirm compatibility before you order.
