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La Marzocco

La Marzocco SMA Vacuum Breaker Valve G1/4 Stainless Steel – B2029

SMA Valve Design G1/4 Connection Stainless Steel Body

Item Number: lm-b202901

Valve Vacuum Breaker SMA G1/4 S/S FKM
  • Valve Vacuum Breaker SMA G1/4 S/S FKM
  • Valve Vacuum Breaker SMA G1/4 S/S FKM
Your Price $112.45
4 payments of $28.11
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Categories: Spare Parts
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Description

Valve Vacuum Breaker SMA G1/4 S/S FKM

The La Marzocco B2029 is a stainless steel SMA vacuum breaker designed for the steam boiler on selected La Marzocco espresso machines. It vents the boiler during warm-up before sealing as the correct operating temperature is reached.

At the centre of the design is an SMA, or shape memory alloy, spring. The spring changes shape with temperature to operate the valve, allowing the vacuum breaker to function without relying on gravity. This means it can be installed vertically or horizontally where the correct machine configuration allows.

La Marzocco introduced B.2.029 on the KB90, Leva and Strada, followed by the Linea PB from serial number PB019865. Earlier Linea PB installations require additional plumbing changes when retrofitting this valve, so the machine serial number and relevant parts diagram should be checked before ordering.

As an internal steam-boiler component, installation should be completed by a qualified espresso machine technician.

What’s in the Box?:

1 × La Marzocco SMA Vacuum Breaker Valve

Stainless Steel Body

  • Brand: La Marzocco
  • Manufacturer Part Number: B.2.029
  • Product Type: Vacuum breaker valve
  • Material: Stainless steel
  • Valve Type: SMA vacuum breaker / anti-vacuum valve
  • Connection Size: G1/4
  • Application: Steam boiler
  • Machine Compatibility: Selected La Marzocco KB90, Leva, Strada and Linea PB machines
  • Serial Number Compatibility: Linea PB from S/N PB019865; Leva from S/N LV000420; Strada from S/N ST005891; KB90 from initial production
  • Installation: Vertical or horizontal where specified; qualified technician recommended

    Features:

  • Genuine La Marzocco service part
  • Stainless steel vacuum breaker valve
  • G1/4 connection
  • Shape memory alloy spring mechanism
  • Temperature-operated sealing action
  • Can operate vertically or horizontally
  • Designed for selected La Marzocco steam boilers
  • Serial-specific Linea PB application

    Coffee Parts Thoughts:

    The SMA design is a useful evolution of La Marzocco's traditional vacuum breaker, particularly because its operation is temperature-driven rather than gravity-dependent. Compatibility matters here: check the machine model, serial number and steam-boiler plumbing before ordering, especially when working with an earlier Linea PB.
  • Specifications
    Brand La Marzocco
    Warranty 1 Year
    Returns 14 Days Change of Mind (If Unused)
    Shipping & Returns

    Delivery time and costs

    Parts, accessories, Brew Bar and Tea Bar

    Standard delivery

    From $8.95 2-7 business days*

    Express delivery

    From $9.95 1-3 business days*
    Water filters

    Standard delivery

    From $8.95 2-7 business days*

    Express delivery

    From $9.95 1-3 business days*
    Coffee grinders

    Home grinders

    Calculated at checkout 1-3 business days*

    Commercial grinders

    Calculated at checkout 1-3 business days*
    Coffee machines

    Home machines

    Calculated at checkout 1-4 business days*

    Commercial machines

    Calculated at checkout 2-7 business days*

    *Delivery timeframes are estimates and start once your order is dispatched.

    Freight partners

    Within Australia

    Australia Post

    TNT Couriers

    Same day (Sydney metro)

    Capital Transport

    Civic Couriers

    We ship using Australia Post eParcel and a range of courier partners within Australia and internationally. If you are in Sydney, you may also be able to choose same day courier options or Click and Collect from our Pagewood warehouse.

    Shipping cost depends on the items in your cart and your delivery address. You can see the shipping price on the product page (where available) and at checkout before entering payment details.

    Orders placed before 3pm (Sydney time) on a business day are typically dispatched the same day. Deliveries are made Monday to Friday, usually between 8am and 6pm. Standard and express options may be available at checkout depending on the item and destination.

    For more details, visit our shipping and delivery page.

    Warranty

    Our products are supplied through Australian channels and are covered by Australian consumer guarantees and, where applicable, manufacturer warranty. For international orders shipped outside Australia, warranty support may require the item to be returned to Australia for assessment.

    Easy returns

    Most spare parts, accessories and brew gear can be returned within 14 days of purchase, subject to conditions and exclusions. If you paid with an eligible PayPal account, you may be able to claim return shipping costs through PayPal. For full details, read our returns policy.

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    The La Marzocco B2029 is a stainless steel SMA vacuum breaker designed for the steam boiler on selected La Marzocco espresso machines. It vents the boiler during warm-up before sealing as the correct operating temperature is reached.

    At the centre of the design is an SMA, or shape memory alloy, spring. The spring changes shape with temperature to operate the valve, allowing the vacuum breaker to function without relying on gravity. This means it can be installed vertically or horizontally where the correct machine configuration allows.

    La Marzocco introduced B.2.029 on the KB90, Leva and Strada, followed by the Linea PB from serial number PB019865. Earlier Linea PB installations require additional plumbing changes when retrofitting this valve, so the machine serial number and relevant parts diagram should be checked before ordering.

    As an internal steam-boiler component, installation should be completed by a qualified espresso machine technician.