Enquirer Consulting Group
Mark Reitz | Clark-Reliance | October 2026
As of 16 Oct 2026
Clark-Reliance designs, manufactures and distributes level indication and control, sight flow indication, and filtration and separation products, from boiler trim and gage glasses to magnetic level indicators, hygienic sight flow indicators and mechanical separators.
This page maps the plants that buy that equipment in the US, by type and size, and the people who usually sign off at each.
The groups follow the industries your own site names: power, oil and gas, refining, chemical and gas processing, pulp and paper, and food, beverage and pharmaceutical processing.
Organizations in each group, banded by size. A group whose public codes do not fit it cleanly shows no count rather than a guess.
| Group | Organizations in the US | Under 20 staff | 20 to 99 | 100 to 499 | 500 or more |
|---|---|---|---|---|---|
| Steam power generation plants (fossil, nuclear and biomass) | about 350 | not published | not published | not published | not published |
| Oil and gas production, gas processing and gas pipelines | about 4,400 | not published | not published | not published | not published |
| Petroleum refineries | about 69 | not published | not published | not published | not published |
| Basic chemical, resin and synthetic rubber plants | about 2,400 | about 1,100 | about 600 | about 350 | about 370 |
| Pulp, paper and paperboard mills | about 220 | not published | not published | not published | not published |
| Food, beverage and pharmaceutical plants | about 39,000 | about 29,000 | about 6,900 | about 1,900 | about 980 |
US firm counts by industry code, banded deliberately.
Boiler trim, gage glasses and level instruments are bought for safety and uptime, so the plant's own engineers shape the choice.
| Role | What they decide | What they care about |
|---|---|---|
| Instrumentation and controls engineer | Specifies the level gage, switch or transmitter | Readings they can trust under high pressure and temperature |
| Maintenance or reliability manager | Approves replacements and upgrades on existing vessels | Fewer leaks, fewer rounds, less downtime |
| Plant or operations manager | Signs off spend above the maintenance budget | Safe operation and meeting compliance needs |
| Purchasing or procurement manager | Runs the quote and the approved supplier list | Lead time, availability and total cost |
In gathering, treatment, transportation and storage, separators and filter elements protect compressors and contact towers. The decision usually sits with facilities or production engineers and the operations manager for the field or station, with procurement running the quote.
Larger operators often buy through a central engineering or supply chain group, so the engineer who writes the standard matters as much as the person at the site.
Hygienic sight flow indicators and in-tank eductors are chosen on sanitary design first.
| Role | What they decide |
|---|---|
| Process engineer | Picks the sight flow indicator or eductor for the line or tank |
| Quality or validation lead | Confirms the part meets hygiene and regulatory standards |
| Maintenance manager | Owns replacements and spares on existing lines |
| Engineering or plant manager | Approves capital projects and new lines |
Mills run boilers, chemical recovery and water systems side by side, so one site can need boiler trim, magnetic level indicators and sight flow indicators at once. The instrument engineer and the mill maintenance manager are usually the first two people to reach, with the mill manager signing larger upgrades.
The people who usually sign at the groups above, one a company. Work emails and phone numbers checked on Oct 16, 2026.
| Name | Role | Company | Where | Phone | |
|---|---|---|---|---|---|
| Dean Winters | Maintenance Manager | Land O'Lakes, Inc. | Strasburg, OH | +1 330 844 7397 | |
| Richard Kleinhample | Senior Plant Engineering & Maintenance Manager | Lamb Weston | Richland, WA | +1 916 903 6434 | |
| Verl Johnson | Maintenance Manager | Dragon Products Ltd | Orem, UT | +1 801 623 2235 | |
| Darrin Manahan | Maintenance Manager | Tennessee Valley Authority | Oakland, TN | +1 901 481 1916 | |
| Miguel Angel Hernandez Ortiz | Calumet Refinery Maintenance Manager | Calumet | Shreveport, LA | +1 713 514 4908 | |
| Damon Minor | Sr Maintenance Manager Motiva | Motiva Enterprises LLC | Houston, TX | damon.minor@motiva.com | +1 443 678 9758 |
| Mike Marlatt | Maintenance Manager | Perdue Farms | Perry, GA | +1 470 248 0782 | |
| Vinan Patwa | Reliability Engineer | AmSty | Boston, MA | vpatwa@amsty.com | |
| Stanley L. Dixon Jr. | Level III Reliability Engineer | Ameren | Decatur, IL | sdixon@ameren.com | +1 618 960 4302 |
| John McKay MS | Plant Manager | Rohm and Haas | San Diego, CA | +1 901 756 4208 |
Built from public federal registries and the company's own website, counts banded deliberately.
If a walk-through is useful, pick a time at cal.com/ecg.
Prepared by Ben Beattie, ben@enquirerconsulting.com.