ACI Services

What ACI Services does

ACI Services, LLC, founded in 1960 as Yorde Machine Products and now operating as a division of Cooper Machinery Services, designs and manufactures engineered solutions for reciprocating compressors serving midstream oil and gas operators, gas transmission and storage companies, chemical processors, and compressor OEMs. The company is headquartered in Cambridge, Ohio, with 51-100 employees and a customer base that includes ExxonMobil, Chevron, Dow Chemical, DuPont, PG&E, Spire Storage, Texas Gas Transmission, Mississippi River Transmission, Columbia Gas, and Mobil Oil, with over 30 documented success stories spanning decades.

The company's offering combines proprietary hardware with the eRCM software platform. On the hardware side, ACI produces custom compressor cylinders (including patented Four-Poster and valve-in-head designs in stainless and exotic alloys), unloading devices (SimPlex/DuPlex, VariPocket, Rotavator, MultiPocket), proprietary radial and poppet compressor valves, and acoustic/pulsation control devices including the licensed GMRC TSBA. On the software side, eRCM Pro is the industry-standard commercial package for modeling reciprocating compressor performance and safety per OEM methods and supports Ariel, Cooper, Siemens Energy, LeROI, NGSG, and Arrow Engine compressors; eRCM Express packages the same modeling technology in Monico mCore SDR edge hardware for PLC integration; eRCM Thermo integrates ProSim Simulis Thermodynamics for gas mixture calculations; and a suite of free support tools (eRCM Viewer, Unit Staging, MultiServices) extends modeling downstream.

ACI makes money primarily through custom hardware sales (cylinders, valves, unloaders, parts), one-time/perpetual commercial software licenses for eRCM Pro, edge-device sales for eRCM Express, authorized distribution of Ariel and LeROI replacement parts, and engineering services including pulsation studies, compressor inspection, re-cylindering studies, and training. Go-to-market is direct enterprise field sales via phone and email, supplemented by a recommended integrator network (Basic Systems, EN Automation, S&R Controls, Enerflex, FW Murphy) and an integration ecosystem spanning DNV Synergi Gas, MMS Sentinel, OSI Pi (Process Innovations), and Altronic DE-4000 control panels. ACI holds multiple registered patents, claims over 300 cumulative years of domain experience across its team, and emphasizes energy-transition applications including hydrogen compression, CCUS, and LNG export.

Name

ACI Services

Legal name

ACI Services, LLC

Website

https://aciservices.com

Company type

Private

Founded year

1960

Operating status

Operating

Headcount range

51–100 employees

Short description

ACI Services, a division of Cooper Machinery Services, designs custom reciprocating compressor cylinders, unloading devices, and valves and licenses the eRCM industry-standard performance modeling software for midstream oil and gas, gas transmission, and chemical processors.

Ownership category

akta.pro rank

Product category

Reciprocating Compressor Solutions

NAICS

Air and Gas Compressor Manufacturing (333912), Pump and Compressor Manufacturing (33391)

SIC

Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585), Misc Industrial & Commercial Machinery & Equipment (3590), Refrigeration & Service Industry Machinery (3580)

akta.pro primary industry

Air & Gas Compressors (General Purpose) (IMAHANAE)

akta.pro secondary industries

Controls, Monitoring & Condition Management (for Pumps/Compressors) (IMAHANAI), Aftermarket Parts, Service & Remanufacturing (Pumps/Compressors) (IMAHANAJ), Compressors, Refrigeration Components & Condensing Units (IMADANAG)

Keywords

• Reciprocating compressors
• Compressor cylinder manufacturing
• Compressor performance software
• Unloading devices
• Pulsation control systems

Headquarters

HQ city

Cambridge

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Supply Chain

Revenue model

1. Commercial Software Licenses: Sale of eRCM Pro commercial software licenses for reciprocating compressor modeling. eRCM Pro is a purchase-based commercial software package requiring registration. Support software is available at no cost with no registration required.
2. eRCM Express Hardware: Sale of eRCM Express edge computing devices - industrial computers packaged in Monico mCore SDR hardware for field deployment with PLC integration capabilities.
3. Replacement Parts Distribution: Distribution of Ariel replacement parts and LeROI replacement parts as authorized distributor. Direct sale of ACI manufactured replacement parts including pistons, piston rings, rider rings, rods, valves, and complete cylinders.
4. Custom Cylinder Manufacturing: Custom design and manufacture of compressor cylinders including OEM replacements, custom designs, and specialized solutions using stainless steel and exotic alloys. Revenue from new cylinder sales and refurbishment services.
5. Unloading Devices: Sale of volume and bypass unloading devices including clearance pockets, pneumatic actuators, SimPlex/DuPlex unloaders, VariPocket hydraulic variable volume pockets, and Rotavator unloaders.
6. Engineering Services: Engineering consulting services including thermodynamic reviews, acoustic pulsation studies, compressor inspection and evaluation, field installation support, and compressor selection and bid review.
7. Training Services: Free virtual training sessions twice yearly and paid in-person training sessions at customer sites for eRCM Pro software and compressor operations.

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels5 records

Core offering

ACI Services designs, manufactures, and distributes custom reciprocating compressor components—cylinders, unloading devices, valves, and acoustic/pulsation control devices—and provides the proprietary eRCM™ software suite for performance and safety modeling. The company also serves as an authorized distributor for Ariel and LeROI replacement parts, and delivers engineering services (compressor selection, re-cylindering studies, pulsation studies per API 618, field installation support) and software/hardware training to oil and gas, gas transmission, storage, chemical processing, and utility operators.

Product overview

ACI Services provides a portfolio of reciprocating compressor solutions combining engineered hardware products with performance modeling software. The core hardware offerings include custom compressor cylinders (with Four-Poster™ and valve-in-head replacement designs), unloading devices (SimPlex™/DuPlex™, VariPocket™, AutoPocket™), compressor valves (radial poppet valves, gas poppets), and acoustic/pulsation control devices (DVO, TSBA). The software portfolio centers on eRCM Pro™ as the industry-standard commercial modeling platform, with eRCM Express™ providing edge computing via Monico mCore hardware for real-time PLC integration. Support tools include eRCM Viewer™, eRCM Thermo™ (integrated with ProSim thermodynamics), eRCM Unit Staging™ for multi-compressor modeling, and eRCM MultiServices™. The software ecosystem integrates with DNV Synergi Gas, MMS Sentinel, Process Innovations OSI Pi plugins, and Altronic DE-4000 panels. Services include compressor engineering, parts distribution (Ariel, LeROI), training, and technical support.

Differentiator

Problem solved

Functional benefit

Brands

• eRCM Pro™: Industry standard commercial software package for modeling reciprocating compressors.
• eRCM Express™
• eRCM Viewer™
• eRCM Thermo™
• VariPocket™
• SimPlex™/DuPlex™
• ExactoTorque™
• MultiPocket™
• Four-Poster™
• TSBA
• DVO

Products and services

• eRCM Pro™ Software Commercial software that models reciprocating compressor performance and safety per OEM methods for Ariel, Cooper Machinery Services, Siemens Energy, LeROI, NGSG, and Arrow Engine compressors; used by compressor engineers to size, evaluate, and optimize equipment.
• eRCM Express™ Edge Device Edge computing device (Monico mCore SDR hardware) that runs eRCM modeling on real-time PLC data to deliver dynamic speed/pressure safety limits, rod load and pin reversal calculations, safe start-up information, and next load step recommendations for reciprocating compressors.
• eRCM Thermo™ Software Thermodynamics prediction software integrated with ProSim Simulis Thermodynamics that models gas mixtures from nearly 400 individual components and calculates K values, compressibility factors, water saturation, hydrocarbon liquid dropouts, phase envelope curves, and hydrate formation curves.
• Custom Compressor Cylinders Custom-designed and manufactured reciprocating compressor cylinders in stainless and exotic materials, including OEM replacements, Four-Poster™ designs, valve-in-head replacement designs, repairs, reconditioning, and functional equivalents; sold to midstream, utility, and chemical operators.
• Unloading Devices Volume and bypass unloading devices including fixed volume clearance pockets, MultiPocket™ (multiple clearance pockets), pneumatic actuators, SimPlex™/DuPlex™ bypass unloaders, VariPocket™ hydraulic variable volume pockets, plug-type and Rotavator™ end deactivators, and AutoPocket automatic variable clearance pockets for compressors.
• Compressor Valves Proprietary designed reciprocating compressor valves including radial compressor valves with 2-2.5x flow area of single-deck valves, high-efficiency gas poppet valves, gas poppets and springs, scavenging valves, and valve-in-barrel cylinder replacements.
• Acoustic / Pulsation Control Devices Acoustic attenuation and pulsation control devices including the Dynamic Variable Orifice (DVO) with adjustable geometry for variable conditions, and the Tunable Side Branch Absorber (TSBA) technology licensed from GMRC for frequency-tracking pulsation cancellation without flow restrictions.
• Reciprocating Compressor Engineering Services Engineering services including compressor and station optimization, compressor selection and bid review, re-cylindering studies, acoustic pulsation studies per API Standard 618, compressor inspection and evaluation, and field installation support for oil and gas and chemical operators.
• Compressor Replacement Parts Distribution Authorized distributor for Ariel and LeROI replacement parts, including pistons, piston rings, rider rings, rods, valves, valve seats, cylinder assemblies, and complete cylinders; also supplies ACI proprietary replacement parts to compressor operators.

Quantifiable outcome

• $1.5 million saved from reuse of existing piping and cylinder supports on Mississippi River Transmission project
• +3 more outcomes

Named customers10 records

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration11 records

AI capability2 records

Feature9 records

Partnerships

14 partnerships are on record, tiered core, secondary, flagship and minor.

• Monico, Inc.coreTechnology or IntegrationMonico provides the mCore SDR hardware platform for eRCM Express edge computing devices. This is a core integration partnership where Monico's hardware powers ACI's reciprocating compressor modeling technology in field deployment applications with PLC integration.
• DNV (Synergi Gas)coreTechnology or IntegrationDNV's Synergi Gas software enables end users' eRCM Viewer models to be directly loaded into Synergi Gas hydraulic modeling and simulation software, providing interoperability between compressor modeling and gas network analysis.
• MMS (Machine Monitoring Systems, LLC)coreTechnology or IntegrationIntegration of eRCM Viewer models into MMS Sentinel real-time compressor diagnostics system, enabling condition monitoring and predictive maintenance based on ACI performance modeling.
• Process InnovationscoreTechnology or IntegrationIntegration of eRCM modeling abilities and features within Big Data Analytics through powerful plugins for OSI Pi Systems, enabling enterprise-scale data analysis of compressor performance.
• AltronicsecondaryTechnology or IntegrationIntegration of eRCM Express features into Altronic DE-4000 Control Panel, extending ACI modeling capabilities into compressor control systems.
• Cooper Machinery ServicesflagshipStrategic or Co-development PartnerACI Services is a division of Cooper Machinery Services. This parent-subsidiary relationship provides strategic alignment and access to Cooper's broader machinery services ecosystem and distribution channels.
• Ariel CorporationflagshipChannel Partner/ Reseller/ DistributorACI is an Authorized Distributor for Ariel Replacement parts, providing any Ariel part required for reciprocating compressor maintenance and repair.
• LeROIcoreChannel Partner/ Reseller/ DistributorACI is a Distributor for LeROI Replacement parts, enabling supply of LeROI compressor components through ACI's distribution network.
• Basic SystemssecondaryImplementation/ SI/ Consulting PartnerRecommended eRCM Express integrator for system integration and implementation services, providing PLC integration and commissioning support.
• EN AutomationsecondaryImplementation/ SI/ Consulting PartnerRecommended eRCM Express integrator providing automation and control system integration services.
• S&R ControlssecondaryImplementation/ SI/ Consulting PartnerRecommended eRCM Express integrator providing control panel integration and commissioning services.
• EnerflexsecondaryImplementation/ SI/ Consulting PartnerRecommended eRCM Express integrator providing compressor package and system integration services.
• FW MurphyminorImplementation/ SI/ Consulting PartnerRecommended eRCM Express integrator providing instrumentation and control solutions for compressor monitoring.
• Gas Machinery Research Council (GMRC)coreOEM/ Whitelabel/ Licensing PartnerGMRC, Southern Gas Association, and ACI Services completed a license agreement authorizing ACI to develop and market products incorporating GMRC's patented tunable side branch absorber (TSBA) technology for pulsation control.

Scale indicators4 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Ariel Corporation: Largest independent manufacturer of reciprocating gas compressors. ACI is both a direct competitor in custom cylinder/unloader design and an Authorized Ariel Distributor, making Ariel the most direct peer in the reciprocating compression value chain.
• Cooper Machinery Services: Parent company of ACI Services and a major provider of reciprocating and rotating equipment services. Directly comparable in target customer, product scope, and channel strategy; ACI operates as a division within Cooper's portfolio.
• Burckhardt Compression: Swiss-headquartered global leader in reciprocating compressor technology, including cylinders, valves, and compressor services. Highly comparable in custom cylinder/reapplication offering for midstream and industrial gas compression customers.
• Compressor Engineering Corp (CECO): Houston-based independent specializing in compressor components, valves, and aftermarket parts for the natural gas compression industry. Direct overlap with ACI's cylinders, valves, and parts distribution business.

Broad incumbents

• Siemens Energy (Dresser-Rand legacy): Inherited the Dresser-Rand reciprocating compressor business and is a major reciprocating compressor OEM with installed-base digital offerings. ACI's eRCM modeling explicitly supports Siemens Energy methods, indicating deep technical overlap.
• Howden: Global provider of air and gas handling equipment including reciprocating compressors and aftermarket services. Comparable as a broad compressor incumbent serving overlapping midstream and industrial customers.
• Elliott Group: Designs and manufactures turbomachinery including compressors for oil & gas, petrochemical, and industrial markets. Overlaps with ACI in industrial gas compression applications and aftermarket services.
• Caterpillar Energy Solutions (MWM): Manufactures gas engines and integrated compressor packages for gas transmission, storage, and industrial gas applications. Comparable to ACI's customer base in midstream and oil & gas compression.
• Atlas Copco: Global industrial group with a compressor technology business serving oil & gas, manufacturing, and process industries. Comparable as a broad incumbent offering compressors, parts, and digital services.

Others

• Gas Machinery Research Council (GMRC): Industry research consortium whose patented TSBA pulsation-control technology ACI licenses. Functions as an enabling/ecosystem partner rather than direct competitor, but is central to ACI's acoustic-control differentiation.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/@ACIServicesInc
• Xx.com/ACIServicesInc

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about ACI Services