Rocket Espresso Pump Pressure Gauge 0-20 Bar – Stainless Steel R58 & R Nine One (Part A219906185)

What Is This Pump Pressure Gauge?

This is a genuine replacement pump pressure gauge for Rocket Espresso machines, part number A219906185. Featuring a stainless steel body and a single 0–20 bar scale, this gauge monitors pump (brew) pressure during espresso extraction — essential for dialling in and diagnosing pressure-related issues. It is a direct OEM replacement for the R58 and R Nine One model families.

Compatible Rocket Espresso Models

• Rocket R58 (from February 2018)
• Rocket R58 (from September 2023)
• Rocket R58 2015
• Rocket R-Cinquantotto (from August 2021)
• Rocket R-Cinquantotto (from October 2024)
• Rocket R Nine One
• Rocket R-Nine-One (from September 2020)
• Rocket R-Nine-One (from November 2022)

Specifications

• Part number: A219906185
• Scale: Single scale, 0–20 bar
• Connection: 1/8" male (BSP)
• Frame diameter: 65mm
• Body diameter: 60mm
• Body material: Stainless steel
• Application: Pump / brew pressure monitoring

Symptoms of a Faulty Pump Pressure Gauge

• Gauge needle stuck, not moving, or reading zero during extraction
• Gauge reading erratically or not returning to zero after extraction
• Visible moisture, fogging, or condensation inside the gauge face
• Gauge leaking from the 1/8" connection point
• Cracked or broken gauge face or bezel

How to Replace a Pump Pressure Gauge

1. Turn off and unplug the machine; allow it to cool and fully depressurise
2. Remove the machine casing to access the pump gauge fitting
3. Unscrew the old gauge from the 1/8" BSP connection
4. Apply PTFE thread tape to the new gauge’s 1/8" fitting
5. Thread in the replacement gauge and tighten firmly — do not overtighten
6. Reassemble the casing, power on, and verify the gauge reads correctly during extraction (typically 9 bar for standard espresso)

Tip: Always confirm your machine’s production date when ordering — Rocket has updated gauge fitments across multiple R58 and R Nine One production runs.

Why Buy From Bear Coffee Machine?

• Genuine Rocket Espresso OEM parts — not aftermarket substitutes
• Fast shipping from Sydney, Australia
• Expert support — we can confirm compatibility using your machine’s serial number