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The vessel is delivered. Our involvement is not finished.
Glass lined equipment lasts decades if it is looked after. We support ours — and glass lined vessels of other makes — from first inspection through to a full reline, with spares, repairs and on-site technical assistance in between.
Lifecycle support
Nine services that keep glass lined plant in production.
Dedicated after-sales support ensures every piece of equipment continues to perform at its peak long after delivery. On-site technical assistance, spare parts availability and preventive maintenance programmes remain at your disposal at all times.
Reglassing & relining
Bring a worn or damaged vessel back to service condition rather than replacing it.
Refurbishment
Shell repair, nozzle work and full mechanical overhaul of ageing equipment.
Retrofit & upgrade
Agitator, baffle, thermowell and nozzle changes for a process that has moved on.
Spare parts
Gaskets, seals, valves, agitators and accessories — for any make of glass lined equipment.
Glass repairs
Localised repair solutions for chips and pinholes found at inspection.
Inspection & assessment
On-site spark testing, thickness measurement and damage assessment.
Preventive maintenance
Scheduled programmes that find thin lining before it becomes a shutdown.
Installation & commissioning
Site supervision through erection, connection and first start-up.
Order traceability
Stage-by-stage progress by email or through a dedicated client portal login.
Reglassing & relining
A worn lining is not the end of the vessel.
When a lining reaches the end of its service life — thinned by years of acid duty, cracked by a thermal shock event, or abraded by solids — the shell underneath is very often still sound. Reglassing strips the old lining, re-prepares the surface and refires new glass onto the existing vessel.
For most operators the arithmetic is straightforward: a reline costs a fraction of a new vessel, and arrives considerably sooner. The vessel keeps its existing nozzle schedule, foundations and pipework, so the plant does not have to change around it.
- Full strip, surface preparation and refiring in our own auto-control electric furnaces
- Glass grade re-selected against the current process, not the original one
- Shell inspection and weld repair carried out before relining, not discovered afterwards
- Complete spark testing and hydrostatic testing before return
- Undertaken on STAHL GLAS equipment and on glass lined vessels of other makes
- Existing shell reusedYes
- Nozzle schedule retainedYes
- Foundations & pipeworkUnchanged
- Glass gradeRe-selectable
- Other makes acceptedYes
- Spark tested on returnFull lining
How a reglassing job runs
Assessment
On-site or in-works inspection: lining condition, shell thickness, weld integrity and a view on whether relining is economic.
Strip & repair
Existing lining removed, shell inspected, welds repaired and the surface prepared to the standard a new vessel would get.
Reline & fire
New glass applied and fired in our furnaces, in the grade chosen for the process as it runs today.
Test & return
Full spark testing, hydrostatic testing and documentation, then delivery back to your site.
Refurbishment
Mechanical overhaul, not just a new lining.
Equipment that has been in service for years usually needs more than glass. Refurbishment covers the rest of it: shell and weld repair, nozzle and flange face restoration, manhole and cover work, agitator shaft and seal replacement, drive overhaul and support structure repair.
The point is that the vessel comes back as a working machine, not as a relined shell with twenty-year-old mechanicals bolted back on.
Retrofit & upgrade
When the process changes and the vessel has not.
Processes move on. Batch sizes grow, a new product needs different mixing, an analyser needs a nozzle that was never provided. Retrofit work adapts existing equipment to what you actually run now.
- Additional nozzles and instrument connections
- Agitator geometry changes — anchor to hydrofoil, single to twin level
- Drive and seal upgrades
- Baffle and thermowell addition or repositioning
- Bottom outlet valve replacement or resizing
Spare parts
Held against your equipment record.
Spare parts availability is part of the after-sales commitment, not a separate business. We supply consumables and wear parts for glass lined equipment — ours and other manufacturers’ — so a single failed gasket does not become a week of downtime.
- Flange gaskets, manhole seals and cover seals
- Agitator seals, shafts and drive components
- Bottom outlet valves and valve internals
- Glass lined baffles, thermowells and dip pipes
- Sight glass assemblies and nozzle accessories
- Glass repair kits for localised damage
Glass repairs
Localised damage does not always mean a reline.
A chip at a nozzle, a pinhole found on a spark test, impact damage from a dropped tool — these are common and, caught early, they are repairable in place. Repair solutions restore the barrier so the shell underneath stays protected while the vessel keeps running.
What matters is finding them. Damage that is repaired in a shutdown window costs a fraction of damage that announces itself as a leak mid-batch.
Repair kits are supplied for your own maintenance team, and our technicians carry out repairs on site where the situation calls for it.
Field service
On site, wherever the plant is.
On-site technical assistance is available at all times. Most of what our field team does is diagnostic: establishing the real condition of a lining before anyone commits money to a decision.
Spark testing
High-voltage spark testing of the lining in situ to find pinholes and breaches invisible to the eye.
Thickness measurement
Coating thickness gauging to map where the lining has thinned and how much service life remains.
Damage assessment
A clear view on whether a vessel should be repaired, relined or replaced — with the reasoning behind it.
Failure investigation
Establishing why a lining failed, so the same operating practice does not consume the next vessel too.
Preventive maintenance programmes
Scheduled inspection and maintenance, planned around your shutdown calendar rather than around ours. A lining that is spark tested on a schedule gives you months of warning; a lining that is inspected when it leaks gives you none.
Programmes cover inspection intervals, thickness trending, spares holding and a documented condition history for each vessel.
Installation & commissioning
Site supervision through erection, alignment, connection and first start-up — including the thermal ramp on the first heating cycle, which is where a great many new linings are damaged by enthusiasm.
Where we have supplied the complete train — reactor, condenser, receiver, column and piping — commissioning is a single scope with a single point of accountability.
Order traceability
You should not have to phone us to find out where your order is.
We keep clients completely informed at every stage of their order. Real-time traceability updates are delivered directly by email notification or through a dedicated portal login, giving complete transparency, zero guesswork and total peace of mind from order placement to final delivery.
The same record becomes the equipment history: material traceability, test certificates, inspection reports and, later, the service and reline history of that vessel.
- Material traceabilityPer heat
- Welding & NDT reportsUT, RT, MPI
- Spark test recordFull lining
- Hydrostatic / pneumatic testCertified
- Third-party inspectionWhere called for
- Service & reline historyOngoing
A complete one-stop solution
Beyond equipment, we extend our expertise to connecting and integrating GMP-compliant equipment, pipelines and all required process accessories into a single, cohesive system. Clients no longer need to coordinate with multiple vendors — STAHL GLAS takes ownership of the entire process ecosystem, delivering a fully integrated, ready-to-operate setup that meets the most stringent industry standards.
Service enquiry
Have a vessel you are unsure about?
Tell us the make, the capacity, roughly how old it is and what the process does to it. We will tell you whether it is worth relining — including when the honest answer is no.