Expansion Valve Tube, Linea PB w/ Scales / Mult.B (T.1.174)

Available end of January 2026.
Restore the critical pressure regulation system of your specialized La Marzocco Linea PB with Scales / Multi-Boiler (Mult.B) machine using the genuine OEM Expansion Valve Tubve (Part T.1.174). This precision-engineered tubing is essential for connecting the expansion valve to the water system, managing excess pressure build-up within the boiler. Designed specifically for the stringent requirements of Linea PB models equipped with integrated scales or multi-boiler configurations, this component ensures the reliable functioning of your machine's safety and pressure relief mechanism, a critical factor for consistent espresso extraction.

If you are currently trying to fix a 'La Marzocco Linea PB expansion valve leak' or working to 'restore optimal boiler pressure on your Linea PB', replacing this crucial tube can be the specific solution you need. Over time, original tubing can degrade, corrode, or fail due to continuous high pressure and temperature cycling, leading to disruptive leaks and performance instability. The T.1.174 Expansion Valve Tube provides a highly reliable, pressure-rated connection, which is vital to 'prevent excessive pressure build up' and maintain consistent internal safety checks in your commercial environment.

This specialized Expansion Valve Tube/Pipe, La Marzocco Part # T.1.174, is manufactured to exacting OEM specifications, guaranteeing a perfect fit and material compatibility with the demanding environment of your Linea PB's internal plumbing. Its design ensures fluid dynamics are maintained for precise pressure relief and system stability. For long-term reliability and to confidently solve problems related to expansion valve connectivity or pressure fluctuations, this original equipment part is an indispensable investment for maintaining your La Marzocco's premium performance.