
Nitric Acid Expanders
Decades of Experience in Multi-OEM Nitric Acid Expander Design, Analysis, Manufacture, Repair, and Service.
RMS’s experienced staff of Nitric Acid Expander experts ensures the highest degree of engineering support while offering the rapid response required to facilitate demanding Expander repairs. RMS’s expert engineering team implements industry-leading quality of service from start to finish.
MULTI-OEM
CAPABILITIES
RMS Supports All Types Of Nitric Acid Expanders From Every OEM • Engineered Solutions Tailor Made To Your Nitric Acid Expander
ENGINEERED
REPAIRS
Inner and Outer Casing • Stators• Seals • Remachining • Welding • Journal Restoration • Curvic Grinding • Bearing Reliability
UPGRADES
Reliability • Performance • Improved Materials • Bearings Controls • Instrumentation
RERATES
Power • Flow • Speed • Gas Conditions
ANALYSIS
Performance • Structural • Frequency • Failure • Rotordynamic • Vibration • Remaining Life • Metallurgical
OVERHAUL
- Complete assembly and disassembly of Nitric Acid Expanders and rotors
- Full cleaning capabilities with on site blasting
- On site NDT, MPI, LPI, UT, and RT capabilities
- Complete quality documentation of services performed
- Full customer access
SPARE PARTS &
REPLACEMENTS
- Blades
- Discs
- Stators
- Inner and Outer
- Casings
- Bearings
- Seals
- Couplings
TURNAROUNDS
- Decades of experience supporting critical turnaround
- Facilitate outages both in the shop or in the field
- Assistance during planning, and execution of critical outage materials
- Engineering expertise and supervision during outage planning and execution
The RMS Difference

Sydney Gross, Director of Turbine Solutions, offers over 30 years of rotating equipment engineering experience. Sydney’s specialization in these critical machines enables RMS to offer superior engineered solutions tailored to your specific Nitric Acid Expander. “Nitric Acid Expander service is challenging owing to the high temperatures, long service, and frequent shutdowns. RMS has the experience and attention to detail critical to a successful build.”
– Sydney Gross – Director of Turbine Solutions


Corporate Office
2760 Baglyos Circle
Bethlehem, PA 18020
Tel: 484-821-0702
Fax: 484-821-0710
Houston Sales Office
16676 Northchase Dr. Ste 400
Houston, TX 77060
Tel: 484-821-0702
South Houston Shop
11410 Dumas Street
Houston, TX 77034
Tel: 484-821-0702
Appleton Eng. & Sales
400 Ahnaip St., Suite 200
Menasha, WI 54952
Tel: 484-821-0702
Sales: 920-460-3811