Grimac Black Plastic Water Valve Knob with Rubber Grip mazzer-astoria-rio-espresso-grinder-parts/mazzer-super-jolly-grinder-parts you will need a pressure

you will need a pressure regulator

The updated model combines classic design with digital precision for modern baristas

without giving up the rinsing performance that high-volume service requires

Connection: 1/8 M

This valve allows for a precise drip rate adjustment to dial in the strength of your tea

Grimac Black Plastic Water Valve Knob with Rubber Grip mazzer-astoria-rio-espresso-grinder-parts/mazzer-super-jolly-grinder-parts you will need a pressureGrimac Black Plastic Water Valve Knob with Rubber Grip Water valve knob with rubber grip found only on the Zola I and Zola II. Ships complete with the internal spring, so there's nothing extra to source. COMPATIBILITY Fits: Grimac Zola I, Zola II INSTALLATION Presses onto the valve stem, DIY, no tools required. PRO TIPS The spring is included with this knob, so don't order one separately. This is an out of production part with limited stock remaining.