Pipe Out Sampler Settings Small v2 (Flux)

The "v2" here is doing real work, not marketing. "Pipe Out Sampler Settings Small v2 (Flux)" unpacks seven fields - sampler, scheduler, steps, cfg, flux_guidance, denoise, plus the pipe passthrough - and the difference from its predecessor is exactly one field: denoise. The original Small Flux pipe stopped at guidance; v2 adds the img2img strength knob, which is the difference between a pipe you can only use for text-to-image and one you can use for anything.

If you're building a Flux workflow that does any image-to-image work at all - inpainting, character consistency, iterating on a starting frame - this is the Small variant you want. denoise is how much of the original image survives: 1.0 starts from pure noise (the text-to-image case), lower values keep more of the source. The original Small Flux pipe couldn't carry that at all, so v2 is strictly more useful and costs nothing extra. The only reason you'd pick the v1 over it is if a downloaded workflow's matching Pipe In node produces the v1 shape.

Mechanically, the usual RvTools relay: one pipe input, pipe passed through, fields split to their own outputs by a tuple unpack. The values were bundled by the matching sampler-settings Pipe In node upstream, and this node exists so the bundle can be consumed without dragging every value across the graph by hand.

The field-by-field is compact:

• sampler / scheduler - Euler-family on a conservative schedule for Flux; Karras is a trap on flow models.
• steps - low counts work; distilled Flux runs 4-8.
• flux_guidance - Flux's guidance knob, tuned in moderation.
• denoise - the new arrival; 0 to 1, for img2img-style runs.
• cfg - carried for pipe-shape compatibility, largely inert on Flux.

Installing it

It's part of ComfyUI-RvTools_v2. ComfyUI Manager: search "ComfyUI-RvTools_v2". Or:

cd ComfyUI/custom_nodes
git clone https://github.com/r-vage/ComfyUI-RvTools_v2

Restart ComfyUI. Dependencies (torch, numpy, Pillow, opencv-python, pilgram, pynvml, piexif) install through Manager; no models to download.

Where people get burned

• v2 wants the seven-field pipe. The v1 Small Flux unpacker takes six fields and no denoise. Feed a v2 pipe to a v1 node (or vice versa) and you'll hit a tuple ValueError at runtime - the pipe wire type is identical, so it only breaks when queued.
• denoise is 0 to 1. At 1.0 you're doing text-to-image with extra steps. Beginners sometimes leave it at 1.0 and wonder why their "img2img" output ignores the source image.
• Deprecation. The RvTools v2 pack is unmaintained and the README points to ComfyUI_Eclipse. Runs as installed; new builds should check the successor pack.