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The Bezzera 5900573 Black Knob Flow Control Kit V1 & V2 includes a pressure gauge set, three white gaskets, a brass fitting, a black knob, a small metal cylinder, and a metal tool—all displayed on a white background. © 2025 1st-line.com
The Bezzera 5900573 Black Knob Flow Control Kit V1 & V2 comes with a black pouch, pressure gauge, handle, valve, hex key, washers, and connectors—everything neatly arranged on a white background. © 2025 1st-line.com
The Bezzera 5900573 Black Knob Flow Control Kit V1 & V2 includes a logo drawstring bag, pressure gauge, two hex keys, small screw, grouphead tool, black knob, rubber gasket, and white washer. © 2025 1st-line.com
A chrome-plated espresso steam valve assembly with a threaded stem, a brass fitting, and a textured cylindrical metal cap, all shown on a white background. © 2025 1st-line.com
A cylindrical metal mesh filter with evenly spaced perforations, standing upright against a white background. The image has a watermark reading 1st-Line Equipment. © 2025 1st-line.com
Close-up of a brass hexagonal fitting from the Bezzera 5900573 Black Knob Flow Control Kit V1 & V2, featuring threaded ends for connecting pipes, shown with a shiny metallic finish on a white background. © 2025 1st-line.com
The Bezzera 5900573 Black Knob Flow Control Kit V1 & V2 features a stainless steel and black plastic tamper with a flat base and a handle styled like a Black Knob, attached to the side for pressing espresso grounds. © 2025 1st-line.com
The Bezzera 5900573 Black Knob Flow Control Kit V1 & V2, shown against a white background, is a stainless steel espresso portafilter with a black handle and flat metal base for use with compatible espresso machines. © 2025 1st-line.com
White rubber or silicone O-ring gasket on a plain background, shown in a top-down view, used for sealing connections in mechanical or plumbing applications. © 2025 1st-line.com
Two white, flat round washers with central holes are displayed on a plain white background. These plastic components are used in the Bezzera 5900573 Black Knob Flow Control Kit V1 & V2. © 2025 1st-line.com
Two metallic L-shaped hex keys of different sizes, part of the Bezzera 5900573 Black Knob Flow Control Kit V1 & V2 for espresso machines, are placed side by side on a white background. © 2025 1st-line.com
The Bezzera 5900573 Black Knob Flow Control Kit V1 & V2 includes a round pressure gauge with a black face, white needle, green (0–8 bar), yellow (8–12 bar), red (12–16 bar) zones, compatible with V1 and V2. Bezzera is printed at the bottom. © 2025 1st-line.com
A close-up of a Bezzera espresso machine pressure gauge shows its cylindrical shape, threaded connector, metallic surface, and the Bezzera 5900573 Black Knob Flow Control Kit V1 & V2 in the design. © 2025 1st-line.com
Close-up of a round metallic part with a central nozzle, screw, and black knob from the Bezzera 5900573 Black Knob Flow Control Kit V1 & V2, viewed from above. © 2025 1st-line.com
Close-up of a Bezzera 5900573 Black Knob Flow Control Kit V1 & V2 part with threaded section, white ring, and grooved grip; nearby are the small brass fitting and black knob, all displayed on a white background. © 2025 1st-line.com
A close-up of a chrome and metal Bezzera 5900573 Black Knob Flow Control Kit V1 & V2 cartridge with a knurled grip, next to a small brass fitting, displayed on white. © 2025 1st-line.com
A close-up of a metal valve stem with a textured grip and threaded ends, alongside a small brass adapter from the Bezzera 5900573 Black Knob Flow Control Kit V1 & V2, set against a white background. © 2025 1st-line.com
The Bezzera 5900573 Black Knob Flow Control Kit V1 & V2, featuring a chrome-plated E61 mushroom valve with textured grip, white rubber gasket, and brass fitting—ideal for Bezzera machines—is shown on a white background. © 2025 1st-line.com
A close-up of a chrome-plated steam or hot water valve shaft with threads, white gasket, brass fitting, and black knob compatible with the Bezzera 5900573 Black Knob Flow Control Kit V1 & V2. © 2025 1st-line.com
Close-up of the Bezzera 5900573 Black Knob Flow Control Kit V1 & V2, showing a chrome-plated steam valve assembly with threaded base, white gasket, and brass fitting—perfect for upgrading your espresso machine’s flow control. © 2025 1st-line.com
A Bezzera 5900573 Black Knob Flow Control Kit V1 & V2 is shown on a white background with a metal hex bolt, white washer, and small brass fitting arranged together. © 2025 1st-line.com
The Bezzera 5900573 Black Knob Flow Control Kit V1 & V2 features a cylindrical body, black knob, small brass nozzle, and mesh filter, shown together on a white background. © 2025 1st-line.com
Bezzera 5900573 Black Knob Flow Control Kit V1 & V2 water inlet valve assembly features a metal mesh filter, brass fitting, and metal valve. Shown on a white background. Compatible with both V1 and V2 kits. © 2025 1st-line.com

Bezzera 5900573 Black Knob Flow Control Kit V1 & V2

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$249.99 $139.99

  • Standard ground shipping within the contiguous 48 states. Alaska & Hawaii shipping costs extra.
  • Total order must be over $99 after all discounts.
  • For more information, please see Shipping Included.
  • Parts are non-returnable and non-refundable unless damaged in transit.
  • Parts do not include any over the phone technical support or instructions other than what is provided on the website.
  • Parts do not come with any warranty.
  • For more information, please see Terms & Conditions.
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Bezzera Flow Control Kit – Plastic Version – Version 1 and Version 2

This Bezzera E61 Flow Control Device, plastic version, gives you the ability to manually adjust the flow of water in your brew group and customize your espresso extractions. This kit includes a stainless steel needle valve that allows the user to manually adjust the amount of water flowing through the group. Variable flow control allows for longer pre-infusion for more even saturation and extraction of your espresso. Changes in pressure are shown on a gauge which is also included in the kit and installs on the front of the group. This E61 Flow Control Device can be installed on any Bezzera machine with an E61 brew group.

This kit contains both the original version 1 and upgraded version 2 components.  The version 1 needle valve has 360 degrees of motion, while the version 2 needle valve reduces the range of motion to about 270 degrees.

There is a wood version of the kit found here.

Brand

Bezzera
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    Will this work with a Bezzera Duo MN? (An E61 machine). How much extra to ship to the USA?
  1. 0 votes
    Q Will this work with a Bezzera Duo MN? (An E61 machine). How much extra to ship to the USA? answer now
    Asked by Marshall on February 26, 2025 3:12 pm
    A Oh, duh, you're in the USA.
    Answered by the admin

    Yes, we have installed it on the Bezzera Matrix and DUO - MN versions only. These will not work on the DE versions.

Anthony B. from United States (US) purchased

Lelit 9600045 Bianca LCC Display - V1, V2 only

1 day, 4 hours, 31 minutes ago

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The Bezzera 5900573 Black Knob Flow Control Kit V1 & V2 includes a pressure gauge set, three white gaskets, a brass fitting, a black knob, a small metal cylinder, and a metal tool—all displayed on a white background. © 2025 1st-line.com
Bezzera 5900573 Black Knob Flow Control Kit V1 & V2
$249.99 $139.99