---
title: Swagelok & HOERBIGER Collaborate to Reduce NOx Emissions on Legacy Engines
description: "After multiple attempts to work with local machine shops, HOERBIGER Engineering Services (HES) turned to Swagelok for help. The relationship between the two companies, which began as a straightforward vendor-supplier connection, evolved into a service-focused collaboration with one goal: help HES service more of their customers’ legacy engines at a lower cost."
---

[Fluid Systems Engineering & Management Blog | Swagelok NorCal ](https://northerncal.swagelok.com/blog)

# [Swagelok & HOERBIGER Collaborate to Reduce NOx Emissions on Legacy Engines](https://northerncal.swagelok.com/blog/swagelok-hoerbiger-collaborate-to-reduce-nox-emissions-on-legacy-engines)

 Written by [Jeff Hopkins](https://northerncal.swagelok.com/blog/author/jeff-hopkins) | 10/24/19 4:00 PM

After multiple attempts to work with local machine shops, HOERBIGER Engineering Services (HES) turned to Swagelok for help. The relationship between the two companies, which began as a straightforward vendor-supplier connection, evolved into a **service-focused collaboration** with one goal: help HES service more of their customers’ legacy engines at a lower cost.

[Read the full blog on *Swagelok Reference Point *→](https://www.swagelok.com/en/blog/swagelok-custom-solutions-HOERBIGER-reduce-nox-emissions)

[View full post](https://northerncal.swagelok.com/blog/swagelok-hoerbiger-collaborate-to-reduce-nox-emissions-on-legacy-engines)

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