Equipment Rehabilitation
Compressors
Worn out, down on output, or won't start? Rebuild it before you replace it.
What we do
- Rebuilds and overhauls
- Valves, rings and seals replaced
- Run-tested before it goes back
Done through partner shops matched to your equipment — one point of contact from quote to delivery.
Frequently Asked Questions
Compressors questions
What are the signs a reciprocating gas compressor needs valves or rings?
Lost capacity, higher-than-normal discharge temperatures, and suction and discharge pressures sitting too close together. On multistage machines, rising interstage pressure with falling capacity usually points to worn rings; rising distance-piece pressure and a hot packing case point to packing. A leaking valve may whistle when the unit is stopped.
Sources: Quincy Compressor · Forge Reliability
Why fix a bad valve now instead of at the next shutdown?
A failed valve can damage other parts. One reliability source puts planned valve replacement at about $500–$2,000, versus $15,000–$50,000 in secondary damage if it runs to failure.
Source: Forge Reliability
What's the difference between a top-end rebuild and a full overhaul?
A top-end rebuild covers heads and valves, for wear limited to the upper machine. A full overhaul covers top and bottom end — typically rings, gaskets, seals, bearings, valves and bushings, plus oil and filters. Damage found to the crankshaft, rods or pistons is usually assessed and quoted separately.
Source: compressor overhaul service page
How often does a compressor need service?
There's no single number — it depends on make, model, gas and duty. Bauer, for example, puts each unit's schedule in its own service manual and notes operating conditions change component life a lot. Many operators now replace valves based on measured condition rather than the calendar.
Sources: Bauer manual · Forge Reliability
Why does oil-free vs. lubricated matter?
In a lubricated machine, oil can carry over into the gas; oil-free designs avoid that contamination and, per RIX, the risk of reactions with oxygen or fouling hydrogen processes. The API 618 standard covers both designs, so know which you have before a rebuild is scoped.
Sources: RIX — why oil-free · API 618
Can a compressor be converted to a different gas?
It depends on the manufacturer and model — contact the manufacturer first. It also needs an engineering review, not just parts. Lighter gases run hotter discharge temperatures at the same conditions, and limits like rod load, discharge temperature and MAWP must be checked against the new gas and pressures.
Sources: Detechtion · Pumps & Systems
Why run-test a compressor after a rebuild?
It confirms the machine reaches discharge pressure, doesn't leak, and runs with reasonable vibration before it goes back to work — catching assembly problems before they become a failure on site.
Source: Ingersoll Rand
What should I send for a rebuild quote?
Make, model and serial number from the nameplate; where it is and who owns it; the gas, suction and discharge pressures and running hours; whether it's lubricated or oil-free; and any recent temperatures or interstage pressures.
Sources: Ariel support · Bauer manual
Answers are general guidance, with sources linked so you can check them. Your equipment's manufacturer and the rules that apply to your site always come first.
Get a quote
Tell us what you have and what's wrong. We'll come back with next steps and a realistic idea of cost.