Fits: Commercial-grade portafilters with 3/8" threaded spout.** Check the spout 1st - make sure it is threaded and can be removed.
Won't fit:
How to use the portafilter pressure gauge:
- Unscrew your portafilter spout first. (Check that you can unscrew 1st.)
- Assemble the gauge to the vertical valve that comes with this kit.
- Screw on this 3/8'' gauge on the portafilter nozzle.
- Place portafilter into the group as you would normally do.
- This is used running water through the PF only - don't use it with coffee!
- Turn on the coffee button and watch the pressure build up on the gauge.
- You may have to tighten the valve or gauge.
- Adjust the OPV to the required pressure*
- Adjust a rotary vane pump*- usually a screw at the side of the pump - (clockwise to increase pump.)
*While 9 bar is a standard acceptable pressure for brewing espresso - you may have to adjust the pressure to 9.2 or 9.3 bars in order to extract at 9 bars.
💡You may need PTFE tape to seal on the thread of the gauge. - see below.