Custom Process Skid Fabrication and Machining
Modular skids built, wired, tested, and started up by one supplier
TRIVACO builds custom process skids at our Hebron, Kentucky shop for chemical plants, municipal water systems, food and beverage producers, power generation, and industrial manufacturers. We handle the mechanical design, source the valves and instrumentation, weld and machine the frame and piping, wire the control panel, pressure test the assembly, then send our own technicians to the site for installation and startup.
What is a process skid?
A process skid is a self-contained assembly of pumps, valves, piping, instruments, and controls mounted on a single structural frame and delivered to the site as one unit. The equipment arrives already piped, wired, and tested, so field crews set the frame, connect utilities, and commission the system. Skids reduce site labor, shorten shutdown windows, and move quality control into a shop where the work can be inspected.
Skids are also called modular skids, packaged systems, or skid-mounted equipment. TRIVACO builds all of the above under one scope.
Skid packages TRIVACO fabricates
Every skid we build starts from your process conditions. These are the configurations we quote most often.
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Pump skids
Simplex, duplex, or multi-pump packages with suction and discharge piping, isolation valves, pressure and flow instrumentation, and local control. Built for transfer, booster, circulation, and sump duty. -
Chemical feed and metering skids
Metering pumps, calibration columns, back-pressure and relief valves, day tanks, and containment. Common in municipal water treatment, cooling water treatment, and pH adjustment. -
Valve and control manifold skids
Pressure reduction, flow control, and blending stations built around the control valves and instrumentation TRIVACO already distributes.
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Filtration and separation skids
Cartridge, bag, and media filter packages with differential pressure monitoring and changeover valving. -
Sampling and analyzer skids
Conditioning systems that deliver a representative sample to analytical instruments at the right temperature, pressure, and flow. -
Heat transfer skids
Heat exchanger packages with circulation pumps, temperature control, and expansion. -
Custom process skids
Bring us the P&ID. We build to it.
Any configuration above that falls outside what TRIVACO quotes today, and two or three skid types they sell most.
Skid fabrication for process industries
Modular skids do different work in every plant. Here is what a TRIVACO skid typically does in each sector we serve, with a link to the full industry page.
Chemical process and refineries
Chemical injection, transfer and unloading, sampling conditioning, and additive dosing packages built in carbon steel, stainless, and alloy for aggressive service.
Municipal water and wastewater
Sodium hypochlorite, fluoride, polymer, and coagulant feed skids, plus booster pump packages and chemical containment. We build to the specifications engineering firms write for treatment plants.
Food and beverage
Sanitary transfer, CIP supply, batching and blending, and steam conditioning packages built with sanitary fittings and finishes suited to washdown.
Pharmaceutical
Purified water distribution, clean steam, and dosing packages with the material traceability and turnover documentation validation groups require.
Power generation
Chemical dosing, sampling, lube oil, and fuel gas conditioning packages for fossil and hydro stations.
Oil and gas transmission
Metering, filtration, odorant injection, and pressure reduction packages for pipeline and station work.
Pulp and paper
Sanitary transfer, CIP supply, batching and blending, and steam conditioning packages built with sanitary fittings and finishes suited to washdown.
Steel and aluminum
Purified water distribution, clean steam, and dosing packages with the material traceability and turnover documentation validation groups require.
Data centers
Chemical treatment and glycol makeup packages for cooling loops, plus pump skids for water-cooled systems.
Semiconductors
High-purity chemical delivery, DI water distribution, and exhaust treatment packages built to the cleanliness standards fab construction requires.
Coal preparation
Sanitary transfer, CIP supply, batching and blending, and steam conditioning packages built with sanitary fittings and finishes suited to washdown.
Tank farms
Purified water distribution, clean steam, and dosing packages with the material traceability and turnover documentation validation groups require.
These describe standard applications for each sector, not TRIVACO project history. Ask if there are any specific builds.
What TRIVACO handles on a skid project
Send one purchase order. TRIVACO engineers the skid, buys the components, welds it, wires the panel, tests it, and puts technicians on your floor to start it up. If something needs adjusting during commissioning, the team fixing it is the team who built it.
Mechanical design and engineering
Our engineering group takes your P&ID and process conditions and produces the general arrangement, piping layout, frame design, and bill of materials. If your engineering firm already has drawings, we can build to those.
Component supply from lines we already carry
The valves, actuators, instruments, pumps, and specialty pipe on the skid come from the manufacturers TRIVACO represents. Lead times, spare parts, and warranty stay under one roof.
Fabrication, welding, and machining
Frames, piping, and custom components are cut, welded, and machined in our Hebron shop. Machining tolerances run to .0002 inch, so brackets, adapters, shafts, and mounting hardware get made in-house rather than farmed out.
UL 508A control panels
TRIVACO Process Automation builds the panel at our Florence, Kentucky shop under UL 508A, including PLC and HMI programming.
Corrosion protection and coatings
Frames and piping are prepped and coated for the environment the skid will live in, including outdoor and washdown service.
FRP components where steel will not last
For aggressive chemical service, we fabricate fiberglass piping, tanks, and structures in-house through TRIVACO Fiberglass Systems.
Shop testing and documentation
Hydrostatic and pneumatic testing, loop checks, and functional testing happen in the shop with your representative present if you want to witness it. Turnover packages include material test reports, weld documentation, instrument data sheets, and as-built drawings. Exact test protocols and documentation package contents.
Delivery, installation, startup, and calibration
Roughly 20 TRIVACO field technicians work across all disciplines and locations, with 24/7 dispatch. All technicians hold OSHA certification and train regularly. They set the skid, connect it, calibrate the positioners and instrumentation, and run it up.
In-house machining capabilities
Skid work generates one-off parts: mounting adapters, shaft extensions, custom flanges, keyed couplings. We make them here rather than sending them out, which keeps the schedule under our control. The same shop takes standalone machining work.
CNC machining
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Capability
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Specification
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Machining center
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3-axis CNC
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Travel (X / Y / Z)
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40" / 20" / 20"
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Tolerance
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To .0002"
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Automatic tool changer
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20-tool capacity
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Milling head motor
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20 HP
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Table travel speed
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Up to 1,000 IPM
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Second CNC center
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Same feature set, smaller envelope, for quick-turn parts
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Programming
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Offline programming and large-capacity program storage
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Turning, milling, and finishing
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Equipment
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Capability
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Lathes (3)
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Turning to 40" diameter
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Manual mills
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Vertical and horizontal
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Keyseater and broach
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Internal keying
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Automatic saw, cutoff saw, bandsaw
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Cutting
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Surface grinder
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Flatness and squareness finishing
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Digital readouts
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On all machines, all axes
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Welding processes
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Process
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Common name
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Oxyacetylene
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Gas
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SMAW
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Stick, AC and DC
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GMAW
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MIG
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FCAW
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Flux-core MIG
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A welding positioner sets each joint in its best position for the weld.
TRIVACO Builds to these codes and standards
Standard
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ASME B31.3
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ASME Section VIII / U stamp
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ASME Section IX
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AWS D1.1
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UL 508A
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National Board, V, UV
Application
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Process piping
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Pressure vessels on skid
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Welder qualification
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Structural steel welding
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Industrial control panels (TPA)
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Safety valve capability
Status
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Confirmed
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Confirmed
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Confirmed
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Confirmed
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Confirmed
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Confirmed
How a TRIVACO skid project runs
- Scoping call. <br/.We review your P&ID, process conditions, site constraints, and schedule.
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Proposal.
You get a scope of supply, general arrangement concept, bill of materials, price, and lead time. -
Design and approval.
Our engineering group issues drawings for your review. Fabrication starts after you sign off. -
Procurement.
Valves, instruments, pumps, and pipe come from the lines TRIVACO represents, so we control expediting.
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Fabrication and assembly.
Frame, piping, and machined components are built in Hebron. The control panel is built in Florence. -
Testing.
Pressure testing, loop checks, and functional testing in the shop. Witness testing available. -
Delivery.
The skid ships as one assembly with the turnover package. - Startup. TRIVACO field technicians install, calibrate, and commission on site.
What we need to quote your skid
Send these and we can price the job accurately on the first pass.
- P&ID, sketch, or a description of what the skid needs to do
- Process conditions: media, flow rate, pressure, temperature
- Preferred materials of construction
- Maximum footprint and any door, rigging, or shipping restrictions
- Electrical area classification
- Available utilities at the installation point
- Control scope: local panel only, PLC, or a tie into your existing DCS
- Code requirements and any client specifications you build to
- Insulation, heat trace, and coating requirements
- Testing, inspection, and documentation requirements
- Required delivery date
No P&ID yet? Call us anyway. Our engineering group develops the process design with you.
Skid fabrication questions
What is a process skid?
A process skid is a group of pumps, valves, piping, instruments, and controls mounted on one structural frame, piped and wired in a shop, then delivered to the site as a single unit for connection and startup.
Does TRIVACO design the skid or only build to my drawings?
Both. Our engineering group develops the process and mechanical design from your conditions, and we also fabricate to drawings your engineering firm has already issued.
Can TRIVACO supply the control panel with the skid?
Yes. TRIVACO Process Automation builds UL 508A panels at our Florence, Kentucky shop, including PLC and HMI programming. The panel ships with the skid, built by the same company.
What size skid can TRIVACO build?
Maximum footprint, weight, and shipping envelope.
What materials does TRIVACO fabricate in?
Carbon steel, stainless, alloys, FRP. We fabricate fiberglass piping and structures in-house for corrosive service.
Does TRIVACO install and start up the skid?
Yes. Our field technicians set the skid, make connections, calibrate the instrumentation and positioners, and commission the system. Dispatch runs 24/7.
Does TRIVACO take machining work without a skid?
Yes. The machine shop takes standalone jobs, including one-off parts, repair components, and short-run production.
Which industries does TRIVACO build skids for?
Chemical processing, refineries, municipal water and wastewater, food and beverage, pharmaceutical, power generation, oil and gas transmission, pulp and paper, steel and aluminum, data centers, semiconductors, coal preparation, and tank farms.
Start your skid project with TRIVACO
Send us a P&ID or describe what the skid needs to do. Our engineering group will scope it, price it, and give you a schedule.