Okay, it's not what you asked, but this is how I see it:

There are three ways I know of to open a drawer mechanism (something that slides on glide rails): A direct pull, a lever, or a spring.

Direct pull: The only thing I can think of is a bar on the bottom that one could pull with an agile foot. Not lovely. Bad idea. Next...

Lever: This is what the foot pedal on the freestanding, flip top can has. Press the pedal which moves the lever which pulls the rod that the top is attached to and flips it up. On a cabinet pull out one could put a pedal on a lever but it would have to push the drawer assembly. That's hard. it would take a big lever or a mighty kick. Bad idea. Next...

That leaves us with springs and tension: I've read a description here of the Hafele that said that it operates using a bungee type system (the bungees being the springs). That is, press the pedal to release the latch which is holding tension on the bungees. The bungees are released and spring to their point of least tension, which is open. Works well. Good idea.

I also read hear about a pressure latch on a trash pull out, where one could bump the door with one's hip and the latch would release. Same principle as above, though it could be done with or without the bungees. Without bungees or similar the only spring is in the pressure latch. That's likely fairly small and just gives it a little push, though I haven't seen it and don't know for sure. If so, it would only open an inch or two and require one to open it the rest of the way oneself. Either way, good idea.

If the Hafele latch doesn't fit on your rails or whatever, you could probably get a good tinkerer to adapt it, or get someone to copy the idea.

I don't see why they would only work with Häfele trash pullouts...I think they all work the same. Häfele probably wants you to buy their pullouts. You might ask them why it would only work w/theirs and what makes their pullouts different.

Of course, I could be wrong, but I hope not since I plan to install it w/Omega's trash pullout!

Buehl, it's possible that the latch mechanism and pullout are designed to work together. I don't know if that's true, but it's certainly possible.

I saw the Hafele foot pedal for sale at my local Lowes in the cabinet organizer section so there's a returnable source.

From MeToo2's description, it doesn't look like it. MeToo2 is the person who adapted the foot pedal for face frame cabinets since the Häfele foot pedal is designed for frameless (see link below that links to MeToo2's pictures & explanation).

However, as I have not yet installed it or even ordered it, I cannot say for certain.

Here is a link that might be useful: Foot Pedal for Framed Trash Cabinets

Cool!! Thanks for the pix, Buehl!

Muscat, I looked up the hip bump pressure latch.

Thanks, all. I keep going around and around in circles over this little thing.......

I know that the foot pedal might be "adaptable" to a non-hafele drawer, but it is so expensive, and I just have a hard time believing that anything strung up with a bungee will last very long. Thus my desire to touch/play with it before investing so much money.

I'll try Lowes again. I did not see them there, but I wonder if they could get it in.....

muscat,
You do not need to have a Haefele pull out to use their foot pedal. My pull out was part of my original cabinet order. I installed the foot pedal myself, not hard to install. It definitely is made for frameless cabs, altho IIRC someone adapted it for framed. As far as I can tell, if you do use it with framed, some of the metal will overlap the bottom frame of the cabinet.

I have the hafele pedal installed on my 5349 series Revashelf trash pullout. It was an easy install and it is SO SO handy! Indeed, I can't figure out how anyone can get by without it.