Chairman, Chief Executive Officer & President at Ingersoll Rand
Thank you, Vik. And turning to slide 11. Our Industrial Technologies and Services segment delivered strong organic revenue growth of 14%, including approximately 6% in price and 8% volume growth. Both of those year-over-year while also demonstrating solid sequential acceleration on both price and volume. Adjusted EBITDA rose 17% year-over-year with an adjusted EBITDA margin of 23.8%, up 70 basis points from prior year with an incremental margin of 29%.
Organic orders were up 25% with a strong book-to-bill of 1.24 times. Starting now with compressors, we saw orders up approximately 30%. A further breakdown shows orders for oil-free products growing over 30%, and oil-lubricated products increased approximately 30%. The Americas team delivered strong performance with orders in North America up approximately low 30%, while Latin America was up in the low 40s. In Mainland Europe, orders were up solidly in the with no material deceleration of note sequentially during the quarter, while India and Middle East were up in the mid-40s.
Asia Pacific continued to perform well with orders up mid-20 driven by mid-20s growth in China and high teens growth across the rest of Asia Pacific. In Vacuum and blowers, orders were up low 20s on a global basis. In the power tools and lifting business, orders for the total business were up high teens and saw continued positive momentum. As we discussed during the Investor Day, our demand generation capabilities provide us with the most forward-looking indicators of customer demand through the data-driven approach to developing marketing qualified leads or MQLs, and we gained an additional several months of insight by leveraging this data.
And we're aware of the uncertainty related to the global economy, but as we review MQLs across our business and across geographies each week, these indicators show double-digit growth year-over-year across all major geographies, including America, Mainland Europe, the Middle East, India and Asia Pacific. China has clearly been impacted due to the Shanghai lockdown, but even in the most recent weeks, MQLs are very near last year's level. As I mentioned earlier, we're very focused in our approach to delivering sustainable innovative solutions.
As such, I want to spend time a minute highlighting our LeROI gas compression business, which we acquired in mid-2017. Since then, we have been very focused on repositioning the portfolio of LeROI to further penetrate biogas market, which has seen strong growth as customers are able to capture gas emitted from sources such as landfills and cattle farms and monetize it as an energy source. And as you can see on the page, the growth we have realized from these efforts has been phenomenal and continues to rapidly accelerate.
Orders were over $100 million in the past 12 months. And revenue is expected to be more than double in 2022, bringing total organic growth of over five years to over 440%, and creating a post synergy multiple of the acquisition to around one times. We greatly exceeded our mid-teens return on capital target and expect to achieve approximately 70% ROIC by this year. LeROI is just a fantastic example of a highly strategic and synergistic company whose value has been unleashed in the transition from a family-owned business to ownership of Ingersoll Rand.
A few weeks ago, I get a chance to visit the LeROI team in Sidney, Ohio. And the transformation the team is making is very impressive. You can feel the energy, passion and engagement of employees as you enter the manufacturing floor. We heard a lot of feedback around how the ownership mentality we have and the equity we granted has positively impacted not only the performance we show here, but more important, the lives of many of our employees in a very positive way. Moving to slide 12. Revenue in the Precision and Science Technologies segment grew 12% organic with approximately 5% price and 10% volume growth.
Additionally, the PST team delivered strong adjusted EBITDA of $85 million, which was up 27% year-over-year with incremental margins of 22%. Adjusted EBITDA margin was 28.6%, down 260 basis points year-over-year, primarily driven by the impact of M&A. And again, the segment was down 130 basis points, excluding the impact of acquisitions, with an adjusted EBITDA margin of 29.9% ex M&A. Overall, organic orders were up 6%, which is on top of 13% year-over-year organic growth in Q1 of 2021. In addition, we continue to be excited about our funnel for the hydrogen fuel business, which now stands in excess of $100 million.
The integration of Seepex, which we acquired in September of 2021 continues to progress very well, with strong growth in new geographies and an acceleration of margin expansion into the low 20s from the mid-teens level inherited at the transaction closed just a couple of quarters ago. I also had a chance to listen the Seepex team in the U.S. And once again, our unique approach to ownership brand is playing a very crucial role in accelerating engagement and performance. I left very excited about the future potential of Seepex as part of Ingersoll Rand.
A further example of our focus on sustainable innovative solutions is the Thomas pump brand. A compression technology, primarily targeting the life and science market with a $2.5 billion addressable market. Thomas pumps, they serve the patient care end market, both in facility through applications like ventilators and also at home through oxygen concentrators. Adjacent today is an in-vitro diagnostic end market. And we have leveraged our highly translatable technology to grow 40% within this market with a very strong focus on OEMs and with significant runway ahead.
We have recently secured several sizable orders from large pharma customers in the in-vitro space who designed our Thomas pump into their new products, which will generate strong recurring revenue over the customers' product life cycle. Moving to slide 13. After a strong start to the year, we're raising 2022 guidance. We're raising organic revenue growth 100 basis points from 8% to 10% driven by a 100 basis point increase in organic growth expectations from both the ITS and PST segments as compared to the original guidance. FX is expected to now contribute a headwind of approximately 2% versus 1% on the prior guidance. And this leads to a total company revenue up 11% to 13%.
We're also increasing the adjusted EBITDA range to $1.385 billion to $1.425 billion. We continue to expect free cash flow conversion to adjusted net income to be greater than or equal to 100%. We anticipate our adjusted tax rate to be in the low 20s and capex to be approximately 2% of revenue. Lastly, we want to provide some color on Mainland Europe and lockdowns in Shanghai. During the quarter and into April, we have not seen any material slowdown in orders. In fact, we monitor our marketing qualified leads or MQLs as we said, fairly close and as they are really a leading indicator for order activity, and MQLs in Europe have been quite stable throughout 2022.
As for the lockdown is Shanghai, we're starting to see the ease of the lockdowns trending positively. We remain encouraged. But as you know, this is a fluid situation that we continue to monitor closely. And although we don't provide quarterly guidance, the best way to think about it is we are not making significant changes to the first half and second half phasing as compared to our original item as we're taking a prudent view in the second quarter due to the lockdowns in Shanghai. Having said this, we still see continued Q1 to Q2 sequential growth in revenue and adjusted EBITDA, both expected to be modest.
Turning to slide 14. As we wrap up today's call, I want to reiterate that Ingersoll Rand is in a very strong position. We delivered record performance in the first quarter, and our backlog provides momentum into the second quarter. 2022 is poised to be a strong year despite known challenges and dynamic market conditions. We will continue to remain agile and leverage IRX across every facet of our business to deliver on our commitments. To our employees, I want to say thank you for your continued engagement and making thoughtful, action-oriented decisions like the owners that you are. This engagement continues to drive the accomplishment of our mission to make life better for our customers, the environment and the shareholders.
Our balance sheet is very strong and with our disciplined and comprehensive capital allocation strategy, we remain resilient and have the ability to deploy capital to investments with the highest return on capital as we continue our track record of market outperformance. So with that, I'll turn the call back to the operator and open for Q&A.