Microbore Hose

[charlie99]

Hello all. So I have purchased a Alkin w31 compressor that should arrive by end of next week. My question is, can you use a microbore hose to fill scba tanks or whatever for that matter with the output of such a compressor. The hose is the ones Huma air sells. I have been using that microbore hose with the yong heng and never had issues, however the fill rate is much higher on the alkin than the yong heng.

 

[Scotty1]

I use a microbore hose from Airtanks Plus with my Alkin, and have not experienced any issues. I would think that if your compressor output pressure spikes significantly above the bottle pressure while filling, that would indicate a restriction.

 

[SpindleB]

4500psi hose minimum and you are good.

I actually like the metal braided hose with a bigger bore.

Amazon.com

 

[Humdinger]

Alkin compressors have a fill hose and assembly that comes with the compressor. You specify which connection your tank uses when you buy the compressor. Alkins will fill with a microbore hose but why would you use one when the factory fill whip can connect to your tank?

 

[SpindleB]

Alkin compressors have a fill hose and assembly that comes with the compressor. You specify which connection your tank uses when you buy the compressor. Alkins will fill with a microbore hose but why would you use one when the factory fill whip can connect to your tank?

Because you may want to reach further than the whip on the compressor or in my case add a large calibrated digital gauge on the wall which was two additional whips.

 

[Scotty1]

My Alkin came with a female foster fitting on the end of their heavy duty fill hose. The heavy fill line is quite rigid and fairly short. Adding another, lighter hose allows me to more easily attach to my bottles, and puts less stress on the connections.

 

[charlie99]

Quick connect is what I asked for when ordered. The reason to use an additional hose if to reach further if needed.

 

[Humdinger]

I have several different fill connectors for the W31. The one I use most is the DIN300 since it provides a rigid connection. One of my tanks has an HP3 valve which fills through a male foster. Alkin sold me a female foster connector that threads directly to the fill hose in place of the DIN lever assembly. It has a bleed screw to release pressure. I also have an adapter that connects to the DIN300 that is used to fill CGA-347 fireman's tank valves.

 

[Ezana4CE]

I have several different fill connectors for the W31. The one I use most is the DIN300 since it provides a rigid connection. One of my tanks has an HP3 valve which fills through a male foster. Alkin sold me a female foster connector that threads directly to the fill hose in place of the DIN lever assembly. It has a bleed screw to release pressure. I also have an adapter that connects to the DIN300 that is used to fill CGA-347 fireman's tank valves.

@Humdinger When you have a moment, can you post photos of your different Alkin fill assemblies? I went to the Alkin site and I didn’t see any pictured.

 

[Ca_Varminter]

Why would you limit your full size compressor with 3.5 cu.ft. output with a Micro-Bore hose???
I use a fill setup from Alkins with a 6 ft extension 6k hose..
The fitting are 1/4" NPT..

 

[Ezana4CE]

Why would you limit your full size compressor with 3.5 cu.ft. output with a Micro-Bore hose???
I use a fill setup from Alkins with a 6 ft extension 6k hose..
The fitting are 1/4" NPT..

@Ca_Varminter I’m not fond of that fill method, but some valves don’t afford us the option of selecting how to fill the SCBA tank. Case and point the Omega HP3 valve sold by AOA.

 

[Ca_Varminter]

If you wanting to utilize the Full Filling Capacity when you are Filling your tank....
The Proper fill Adapter will be needed...
For SCBA...Here is an adapter to fill from the DIN300(Alkin's) to SCBA

Stainless Steel Firehouse to Stainless Steel Male DIN300 Adapter

Our Stainless Steel Firehouse to Stainless Steel Male DIN300 Adapter will allow you to fill ours, or any other Carbon Fiber or SCUBA tank that has a DIN300 valve.

www.topgun-airguns.com

The will keep the bottlenecks to the flow to a minimum...