Added major control functions to my compressor

[OkByMe]

ALKIN W31 - 2006


Weight 125lbs. with all accessories.

240 volt 4 wire 1 phase power.

1200 R.P.M.

4500PSi service pressure with 3 stage filtration.

Adjustable pressure switch for compressor shut down at selected pressure, in this case, 4500psi.

Auto-dump 3 stage condensate drains with accumulator tank and sound muffler.
Dump between 1st. and 2nd. stage
dump at 1st filter
dump at 2nd. filter

High and low pressure manifolds.

Intake designed for NITOX and TRI-MIX with turbulator.

Differential Magnahelic guage in intake to monitor pressure/vacuum. (+/- 3psi)

Oxygen shut off relay to stop oxygen flow when compressor stops.

Oxygen sensor mounted after turbulator unit.

Flexible cascade connect (6,000psi) hose with quick dis-connect from high pressure manifold with control valve.

Check valve mounted between 1st. filter and compressor 3rd. stage output line to isolate 1st. filter at compressor shutdown.

Priority valve mounted after 1st. filter output to 2nd. filter. (1800psi. set)

check valve mounted after 1st. filter priority valve before 2nd. filter.

Priority valve mounted after 2nd. filter to high pressure manifold. (1800psi. set)

Check valve installed in the compressor feed line after 2nd. filter priority valve to the high pressure manifold preventing cascade from pressurizing compressor and/or filters - stop reverse flow.

Carbon Monoxide and moisture sensor on 2nd. filter output to high pressure manifold.

Flow control valve from high pressure manifold to pressure regulator for low pressure manifold.

3 way valve on low pressure manifold to isolate 3rd. filter bank (when not using breathing air fill) with Pressure relief valve to 3500psi just in case 3 way valve selects filter and regulator is set above MOP for stack.

Check valve on 3rd. filter bank output to low pressure manifold to prevent reverse flow through filter when charging pressurized cylinders or supply from cascade.

Priority valve on 3rd. filter bank output. (1800psi. set)

Pressure gauges on all 3 compressor stages to monitor cylinder output.

3/8 .049 tubing was used for control panel layout, providing solid interconnection between components to minimize the need to attach all the the components to the panel and "float" those difficult to attach on the tubing. With a little creative tubing bending, the number of connections were kept to a minimum. The panel is electrically grounded, since components, both electric and pneumatic were mounted to a sheet of 3/4" A/B plywood. Static ground to all P.V.C. piping.

 

[rjack321]

All that piping and valves for a 3cfm compressor? You probably spent more than a W31 is worth.

 

[OkByMe]

I posted this in the hope that someone who may have a greater expertise than me would take the time to evaluate what was done and critique my methodology. As for what it is worth... I spent $1500.00 for the compressor and added all the additional filters, controls, tubing and fill stations for an additional $1460.00. I bought from surplus outlets and shopped for bargains, did all the work myself. It is completely automated.

I can hose up to the stage bank, one or more (daisy chain the doubles) tanks and walk away. The nice thing about it is that it is portable.. All I need is a 4 wire dryer outlet. I can run this inside because it is very quiet. 80db @ 3 feet, 95db @ 3 feet auto dump blow down. The compressor is continuous duty, it has run for up to 4 hrs straight without heating (3rd stage 182 degrees, 2nd. stage 158 degrees) or consuming oil - which is the most efficient way to use a compressor.

 

[Scubadude_LA]

Damn Dude! You gonna patent that thing??
Who cares what you spent. Looks like fun tinkering Beats wasting time lowering your truck and such...
Can always be applied to a larger setup.
Nice stainless tubing work.