# Rocket Espresso Porta Via

> Espresso compatibility data from EspressoFit. Confidence: **measured (documented inference or third-party measured spec)**.
> Sources last read firsthand: 2026-07-15.
> Canonical page: https://espressofit.com/machines/rocket-porta-via/

## Specifications

- **Portafilter diameter:** 58 mm
- **Basket type:** non-pressurized
- **Grouphead standard:** E61 (58mm)
- **Brand:** Rocket Espresso

## Compatible baskets and parts

- IMS B70 Competition 1 Cup (B701TH26.5E) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-1-cup/
- IMS B70 Competition 1 Cup H18.5 (B701TH18.5N) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-1-cup-h18-5/
- IMS B70 Competition 1 Cup H19.5 (B701TH19.5N) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-1-cup-h19-5/
- IMS B70 Competition 1 Cup H24.5 (B701TH24.5N) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-1-cup-h24-5/
- IMS B70 Competition Convex 2 Cup (B702TCH26E) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-2-cup/
- IMS B70 Competition 2 Cup H22.5 M Pattern (B702TH22.5M) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-2-cup-h22-5-m/
- IMS B70 Competition 2 Cup H24.5 (B702TH24.5M) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-2-cup-h24-5/
- IMS B70 Competition 2 Cup H26.5 (B702TH26.5M) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-2-cup-h26-5/
- IMS B70 Competition 2 Cup H28.5 M Pattern (B702TH28.5M) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-2-cup-h28-5-m/
- IMS B70 Competition Convex 2 Cup H20 (B702TCH20E) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-convex-2-cup-h20/
- IMS B70 Competition Convex 2 Cup H22 (B702TCH22E) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-convex-2-cup-h22/
- IMS B70 Competition Convex 2 Cup H24 (B702TCH24E) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-convex-2-cup-h24/
- IMS B70 Competition Convex 2 Cup H28.5 (B702TCH28.5E) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-convex-2-cup-h28-5/
- IMS B70 Competition NanoQuartz 2 Cup H20 (B702TFH20NT) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-nanoquartz-2-cup-h20/
- IMS B70 Competition NanoQuartz 2 Cup H22 (B702TFH22NT) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-nanoquartz-2-cup-h22/
- IMS B70 Competition NanoQuartz 2 Cup H24 (B702TFH24NT) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-nanoquartz-2-cup-h24/
- IMS B70 Competition NanoQuartz 2 Cup H26 (B702TFH26NT) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-nanoquartz-2-cup-h26/
- IMS B70 Competition NanoQuartz 2 Cup H28 (B702TFH28NT) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-nanoquartz-2-cup-h28/
- IMS DS58.5 Puck Diffuser Screen (puck-screen) — https://espressofit.com/parts/ims-ds58-5-puck-screen/
- IMS E61200IM Integrated Membrane Shower Screen (E61 group) (shower-screen) — https://espressofit.com/parts/ims-e61200im-shower-screen/
- IMS E61200NT Nanotech Membrane Shower Screen (E61 group) (shower-screen) — https://espressofit.com/parts/ims-e61200nt-shower-screen/

## Notes

Rocket's portable full-size-performance machine. This entry is **measured
tier**: Rocket's own catalogue names the Porta Via's "E61 brew group"
firsthand, and every E61 group takes a 58mm portafilter — a fixed standard —
so the diameter follows from the group by a documented inference, the same
basis as the Rocket Appartamento. IMS's B70 list placing Rocket in its
58/58.4mm tamper series corroborates it. What's missing for Tier 1 is only
Rocket printing the "58mm" figure, which the catalogue does not. As an E61
58mm machine it takes any standard 58mm basket — the VST and IMS B70 baskets
in this database fit. Verified at the measured tier against Rocket's official
catalogue on 2026-07-15.

## Sources

- https://rocket-espresso.com/pdf/ROCKET_Domestic_Catalog.pdf
  - Official Rocket Espresso domestic catalogue, read firsthand 2026-07-15. The Porta Via page states verbatim: 'With PID temperature control and E61 brew group, you get precision extraction and steam performance wherever your day takes you.' The catalogue prints no portafilter diameter — the 58mm figure follows from the E61 group, which is a fixed 58mm standard.
- https://www.imsfiltri.com/IMS-competition-Catalogue.pdf
  - Official IMS catalogue, read firsthand 2026-07-04: IMS's 'For tamper 58 / 58.4' B70 basket compatibility list names ROCKET — third-party manufacturer corroboration that Rocket's E61 machines take the 58mm standard.

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Compatibility reference, not a substitute for your machine's manual. Every claim above cites the source it came from; see https://espressofit.com/methodology/ for how entries are verified. Corrections: corrections@espressofit.com.