SS-QC4-B-4PFK2
SWAGELOK Quick Connect Orange KEY 1/4" FNPT SS-QC4-S-4PFK2 & SS-QC4-B-4PFK2#N24G
You will appreciate the Honeywell INNCOM E528 model's straightforward wiring setup.
SWAGELOK SS-QC4-B-4PFK2 Valve
What stands out about this item is its all-stainless steel construction, no plastic parts.