Pump maintenance for chemical and petrochemical plants
In chemicals, the pump's enemy is not wear — it is corrosion. Acids, alkalis and solvents attack metals, elastomers and seals in ways only correct material selection can solve. Hydro Pumps repairs chemical pumps with the discipline the sector demands: the right alloy, compatible elastomers, dual sealing when the fluid calls for it and zero leakage as the acceptance criterion.
Pumping where chemistry attacks
Applications where the wrong material means rapid failure — and sometimes an incident.
Acids and alkalis
Transfer and dosing of corrosives — special alloys, engineered plastics and compatible seals are mandatory.
Solvents and flammables
Low-lubricity, high-risk fluids — dual sealing with barrier fluid and leak containment.
Petrochemical processes
Process streams in intermediates and polymer units, with severe continuity requirements.
Crystallizing fluids
Salt solutions and polymers that solidify on air contact — seal plans with flush and quench.
Chemical plant utilities
Demineralized water, cooling towers and effluents — the support that keeps the process running.
High-temperature transfer
Thermal oils and hot streams — expansion, sealing and elastomers for elevated temperature.
Materials and sealing: where the chemical repair is decided
The right alloy for each fluid
Repairing a chemical pump with generic material is scheduling the next failure. We work with austenitic and duplex stainless steels, high-nickel alloys and engineered coatings — always starting from chemical compatibility with the actual process fluid, not the original part's 'visual equivalent'.
The same rigor applies to elastomers: an incompatible o-ring dissolves, swells or hardens within weeks. Each seal is specified by the fluid's chemistry and the operating temperature.
Zero leakage as the acceptance criterion
With hazardous fluids, sealing is not finishing — it is containment. We specify dual sealing with barrier fluid where the process requires, adapt seal plans and test tightness before return.
The pump comes back with a dossier: applied materials with certificates, dimensionals, balancing and testing — the documentation the plant's process safety team needs on file.
Materials
Stainless, duplex, nickel alloys
Sealing
Dual, with barrier and plans
Elastomers
Real chemical compatibility
Acceptance
Tested tightness
Questions from chemical plant operators
We start from the actual process fluid — composition, concentration and temperature — and specify alloy and elastomers by documented chemical compatibility, not by the original part's appearance. Applied materials ship with certificates in the repair dossier.
Typically, migrating to dual sealing with barrier fluid and an adequate seal plan: the process stays isolated from the environment even if the primary seal fails. We assess the pump's seal chamber and execute the complete conversion, with a tightness test at acceptance.
Yes — including qualified welding for those alloys, machining and manufacture of components to drawing. When the original part is discontinued, reverse engineering reproduces the geometry in material of equal or superior compatibility.
Yes — with the same method as other process sectors: prior inspection, scope and parts closed before the window, execution on schedule and a complete dossier at delivery. Emergencies are covered by the 24h regime.
Services and content for your sector
Corrosion beating your pumps?
Send the fluid and the failure history — engineering specifies materials and sealing to end the cycle.