Airhog gauge replacement

I have the large Airhog tank with a bad gauge. Does anyone have a suggestion for a replacement?
16961054290553519153042670937498.jpg
 
i dont have any larger back mount gauges like that,

but i use these from ebay with good results,
and only 12 bucks shipped.

 
1/8" NPT threads!!
Would you happen to have a parts list for what you did here? Might save me some time....
1696473511829.png

I assume you went from 1/8th at the valve up to 1/4 at the gauge. I haven't been able to find any 1/8th 5000psi gauges yet plus I like the way your application keeps everything close to the tank.
 
My Tiger Shark SCBA from Brancato came with two gauges. The tank pressure gauge was the 1 1/4” or so diameter gauge with 1/8NPT male on the back. It was damaged by the animals in shipping somewhere along the line. I called Brancato and they sent me a replacement gauge just like the glycerin filled line pressure gauge on the other side of the valve at a very fair price. I’m not a fan of those crappy little 1 1/4” gauges, nor do I care for the ones on most airguns as they are quite inaccurate.
5,000psi, 2” face, 1/8NPT back center.
I don’t know who makes it but it seems like decent quality. Wouldn’t surprise me if it’s the same gauge starlingassn linked in his post.

IMG_0451.jpeg


IMG_0452.jpeg
 
Last edited:
As a rule of thumb, tank gauges with 1.5" or smaller face diameters are 1/8 NPT threaded. These gauges are typically seen as the secondary gauge that reads tank pressure. Gauges with 2.0" or larger face diameters are 1/4 NPT threaded. Another way to distinguish gauges is to see if they have teflon tape. NPT gauges are have taper threads and require teflon tape to seal from leaks.

Anyone who needs to replace or upgrade their gauge needs to ALWAYS empty the tank if replacing the second tank pressure gauge as it is under pressure. You can remove the larger gauge without emptying the tank if you keep the tank's air knob closed when replacing it. If the gauge threads are parallel instead of tapered there will either be a dowty seal (bonded washer with rubber o-ring inside) underneath the gauge or there will be a hard delrin washer at the base of the threads inside the valve. Most Chinese valves use M10*1 parallel threaded gauges in their fill assemblies. Most of the European valves use BSP threads which can begin to thread into an NPT opening. It will leak and damage the threads. Don't try to thread NPT gauges into BSP threaded fill assemblies.

Airtanksforsale, Airhog, and Omega assemblies use NPT threaded gauges. I've had very good experience using Durachoice gauges from Directmaterials.com in Houston. Their gauges are well made, accurate, and less expensive than most you'll see on Ebay, Amazon, and most retailers. I recently replaced the tank pressure gauge on an Airtanksforsale fill assembly with a Durachoice gauge when the original was off by 200 bar higher than was in the tank.
 
Last edited: