Electronics chemical pump contamination-free, leak-free — maintaining purity & PCB quality
Corrosive etch and ultrapure DI water cannot tolerate leaks or contamination. Finish Thompson sealless magnetic drive pump (USA) PVDF/ETFE body — sealed static pump chamber, covering the full line from cleaning to wastewater.
5 chemical pump pain points affecting PCB quality & cost
Corrosive etch, plating solutions, and DI water run simultaneously. Wrong pump selection = fluid contamination, PCB defects, downtime, and safety risks.
Wrong materials or leaking seals introduce metal ions into DI/ultrapure fluid → coating defects, PCB damage.
→ Defective products · yield lossEtch and acid corrode seals → leaks onto floor, equipment corrosion, safety hazards.
→ Corrosion · safetyWorn seals require periodic replacement — each time the line stops, incurring labor and parts costs.
→ Line downtime · maintenance costEtch, acid, alkali, and DI run simultaneously — no single material suits all fluids, leading to premature failure.
→ Premature pump failure · contaminationTransferring chemicals from drums/IBCs by hand pump → worker exposure, risk of spills and burns.
→ Occupational safety · spillsNo seal = no leaks, no contamination. That is why the electronics industry chooses sealless
Eliminate leak points at the seal
Magnetic coupling transmits force through a sealed wall — no penetrating shaft, no dynamic seal for chemicals to leak through.
Dry-run capable, reduced downtime
DB/SP series dry run for hours thanks to carbon bearings — safe when tank runs dry, reduces unexpected failure.
PVDF/ETFE for ultrapure & corrosive fluids
PVDF/ETFE body resistant to etch, strong acids and low ion leaching for pure/DI fluid — choose correctly for each fluid.
Mechanical seal vs. magnetic drive
Finish Thompson pumps for each electronics / PCB production process step
Each process step has its own chemicals and purity requirements. The diagram below maps the appropriate FT pump series — from cleaning to wastewater treatment. One supplier, standardized materials & spare parts for the entire line.
PCB cleaning
Alkaline, mild acid, surfactants — removing oil/oxide before processing.
CLEANING TANK CIRCULATIONFT DB / UCP (PP)Develop & strip photoresist
Alkaline solution (Na₂CO₃/NaOH) to develop and strip photoresist.
CIRCULATION / SOLUTION FEEDFT DB (PP·PVDF)Micro-etching (etch)
Ferric chloride, persulfate, alkaline/acid etch — highly corrosive.
ETCH SOLUTION CIRCULATION / FILTRATIONFT DB (PVDF) / UCR (ETFE)Electroplating (Cu/Au/Ni/Sn)
Copper sulfate, gold, nickel, tin + acid additives.
CIRCULATION + FILTRATION FOR PLATING TANKSFT DB (PVDF) / UCPUltrapure DI water rinse
Pure DI water — requires protection against metallic ion contamination.
DI WATER CIRCULATIONFT DB / SP (PVDF)Chemical transfer
Drawing pure acid/etch/plating solution from drums–IBCs.
SAFE CLOSED TRANSFERFT EF/PF/SF drum pumpWastewater treatment
pH neutralization, heavy metal precipitation (Cu...), coagulation polymer.
CHEMICAL DOSINGFT + metering pump★ For DI water and pure fluids, prefer PVDF/ETFE to minimize ion leaching; for highly corrosive etch, choose PVDF or ANSI series with ETFE lining. Match the model precisely to flow rate & chemicals at each process step — FT drum pump for closed transfer. Send your list for a consultation.
Submit your tank chemical list
Receive a material compatibility matrix (PP / PVDF / ETFE / 316SS) + pump recommendation for each process stage.
PP, PVDF or ETFE? Choose correctly to prevent premature pump failure
Wetted material selected by chemical, purity, and temperature — determines both pump service life and board cleanliness.
Polypropylene (default)
Standard, cost-effective — cleaning fluids, alkaline and select plating solutions at ≤82°C.
PVDF (Kynar) — for purity & etch
Broad chemical resistance, high temperature tolerance, low ion leaching — for corrosive etch, plating solutions and ultrapure DI.
ETFE (ductile iron lined · ANSI UCR series)
ETFE lining on ductile iron body — resistance close to fluoropolymer level, mechanically durable. For harsh corrosive etch and chemicals, high pressure/temperature.
Chemicals vary by facility — submit the tank chemical list, the TKT engineering team returns a material compatibility matrix based on actual concentration & temperature. Send now →
Select pump series by flow rate & corrosion level
Data per Finish Thompson documentation (finishthompson.com), in both gpm and m³/h.
| FT series | Type | Max flow rate | Max head | Wetted materials | Characteristics |
|---|---|---|---|---|---|
| DB | Sealless plastic, flooded suction | ~275 gpm (62,5 m³/h) | ~220 ft (67 m) | PP or PVDF | Dry-run capable (carbon bearings) · ISO 1940 G2.5 · ATEX optional · 5-year warranty |
| SP | Sealless plastic, self-priming | ~275 gpm (62,5 m³/h) | ~220 ft (67 m) | PP or PVDF | Self-priming: suction 7.6 m, prime 5.5 m/90s · dry-run capable · 5-year warranty (not for flammable fluids) |
| MSDB | Sealless plastic, multistage | ~80 gpm (18 m³/h) | 300 ft (91,5 m) | PP/PPS or PVDF/PPS | High head / low flow · pressure up to 135 psi |
| UCP | Sealless ANSI (PP/ETFE) | up to 450 gpm (102 m³/h) | up to 330 ft (100 m) | PP + ETFE lined | ANSI B73 standard · CE/UKCA · pressure up to 300 psi · 82°C |
| UCR | Sealless ANSI (ETFE/ductile iron) | up to 1,450 gpm (329 m³/h) | up to 492 ft (150 m) | ETFE lined / ductile iron | Aggressive chemicals · ATEX · CE/UKCA · 121°C · 300 psi |
Common features of the FT sealless series: neodymium magnets transmit torque through a sealed containment shell · CE certified · ISO 1940 G2.5 balanced (DB/SP) · 5-year warranty (DB/SP/MSDB). Precise operating point for each tank — contact for datasheet. See more Finish Thompson brand · magnetic drive pump catalog.
Manufacturer specialized in corrosive chemicals + authorized distributor with warehouse & service in Vietnam
Specializing in corrosive chemical pumps since 1951
FTI (USA) specializes in corrosive chemical pumps — the sealless magnetic drive series is their core product line, achieving CE/UKCA/ATEX certification (model dependent). View brand →
19+ years · warehouse & spare parts in Vietnam
Authorized distribution, in-stock pumps and spare parts, material compatibility matrix consultation for the full process line — reduced lead time.
Sealless pumps for electronics & semiconductors
Refer to the detailed technical article on pump selection for electronics industry chemicals, materials and application cases. Read technical article →
Frequently asked questions about pumps for electronics manufacturing
Which pump for etch tanks (ferric chloride / persulfate)?
How to pump DI water / ultrapure fluid while minimizing contamination?
Why are sealless magnetic drive pumps suitable for the electronics industry?
A production line with multiple different fluids (etch/plating/DI/alkaline) — how to select pumps?
Can Finish Thompson pumps run dry?
Pumps for hazardous/explosive areas (ATEX)?
What about lead time and spare parts?
Submit your tank chemicals — receive pump recommendation + quotation
Cross-reference chemicals at each process step against the FT material matrix, recommend pumps by flow rate + stock availability — within 24 hours.
- PP/PVDF/ETFE/316SS material compatibility matrix for each tank
- FT pump series recommendation by process stage + flow rate
- Quotation + stock status & lead time in Vietnam