Panel Labeling for AFP Purge Valve

Phil · #1 06-08-2012, 12:34 PM

For those of you who are using the AirFlow Performance kit on your engines, how have you chosen to label your Purge Valve on the panel?

Thanks,
Phil

schristo@mac.com · #2 06-08-2012, 12:41 PM

PURGE
Pull

Mike S · #3 06-08-2012, 12:46 PM

I used "Pull For Fuel Bypass"

Also, I used a "T" handle, and tucked it out of the way for a right seater to reach.

It is to the left of the throttle.

I figured I did not want someone to mistake it for a heater control or such, and pull it by mistake.

DanH · #4 06-08-2012, 01:43 PM

I used "Pull For Engine Kill"....because that's exactly what it does if you pull it in flight. And Mike is right; you want it located someplace where nobody will ever pull it by mistake....including you. Mine is under the RV-8 throttle quadrant.

flion · #5 06-08-2012, 05:39 PM

"Purge
Pull -> ICO"

The control is labled with the top line and the second line is underneath the control.

N427EF · #6 06-08-2012, 06:26 PM

You will use this control knob twice for each flight.
Just like the mixture knob, it will kill the engine if you pull it,
and just like the mixture knob the engine will run again if you shove it back in.

Geico266 · #7 06-08-2012, 09:29 PM

My -10 had it in front of the passenger with a black handle, next to cabin heat (with black handles) "Front" and cabin heat "Rear".

I moved it over the throttle, with a red handle marked fuel cut off / bypass.

Phil · #8 06-09-2012, 11:35 AM

Yeah, I currently have it closest to the mixture with the oil cooler door directly beside it.

On the passenger side is the cabin heat knobs and AFP Alternate Air knob. I don't like having Alt Air that close to the heat, but it's not a deal breaker if they accidentally pull it. It's just a hassle to reset it once we're at the destination. I'm going to make the Alt Air knob a different color and style (T-Handle with a quarter-turn locking mechanism) to help prevent an accidental pull.

Phil

Bill.Peyton · #9 06-09-2012, 03:09 PM

Where in the system does the purge valve get installed? Do you purchase these directly from afp? I assume they really help with hot starts

Phil · #10 06-09-2012, 03:24 PM

Here you go Bill. I just took a snapshot. It's at the top of the engine and immediately before the fuel distributor block (spider).

The idea is to open the purge valve (which is plumbed back into the bottom of the fuel selector valve), kick on the boost pump, and cool fuel is routed directly to the fuel distributor block. While the valve is open, the fuel is returned back to one of the tanks.

Once you've ran it for a few second to purge the system, you close the valve and everything operates as normal.

Phil