The Final Piece of the Pressure-Profiling Puzzle: Precise Pressure Control, Your Way
Want to unlock the full potential of the Starseeker Super58 ? This factory-grade OPV (over-pressure valve) adjustment knob is the one to get! By manually fine-tuning the relief valve, you can easily adjust extraction pressure in real time as you brew. Whether you want a gentle 6 bar low-pressure pre-infusion, a standard 9 bar golden extraction or even an advanced pressure profile, you can control it precisely with one finger.
✨ Key Features
Ultimate pressure control for pressure-profiled extraction: Break free from a single fixed pressure. Simply turn the knob to fine-tune the opening pressure of the relief valve and adapt perfectly to beans of different roast levels and grind sizes.
Precision metal construction with a premium feel: CNC-machined from high-quality stainless steel/metal. The finely brushed, lustrous surface resists corrosion and high temperatures, and blends perfectly with the Super58 body.
Classic straight knurling for smooth operation: Precision straight knurling around the edge of the knob gives a much more secure, non-slip grip, so you can make smooth adjustments even if your hands are slightly damp mid-brew.
Food-grade double O- ring seals: Two heat-resistant, food-grade silicone seals come fitted as standard for an excellent airtight, snug fit. Even under high brewing pressure it stays completely leak-free, holding pressure steady.
Factory spec, no-modification fit: Fits the adjustment port below the pressure gauge on the Starseeker Super58 espresso machine exactly. With precise threading and no modification tools needed, the upgrade takes just seconds.
📋 Specifications
Brand: Starseeker
Name: Super58 OPV adjustment knob (OPV Knob)
Material: High-strength stainless steel / metal; food-grade heat-resistant silicone (seals)
Compatible with: Starseeker Super58 manual/portable espresso machine
Function: Fine-tunes the over-pressure valve (OPV) pressure to control maximum brewing pressure and pressure profiles
