Fengfan PP Material Electroplating Equipment Chemical Nickel Electroplating Filter

Product Overview

A plating bath only holds its finish while the bath itself stays clean. This side-stream filter is built to keep a 600 L tank clear of the particles that pit, rough and dull a deposit: pump, housing, pressure gauge, valves and control box assembled together on a freestanding frame, ready to pipe into the circulation loop. Bath is drawn through the media and returned to the tank, so sludge, airborne dirt and broken-down anode residue end up in the housing instead of on the work.

Most electroplating equipment suppliers ship a bare housing with a pump bolted to the lid. This one arrives as a piped circulation set: inlet and outlet flanges, a gauge on the panel where an operator can actually read it, and valve handles that let you isolate the housing for a media change without draining the tank. Position it beside the tank, connect the pipework, and it is in service.

Every wetted part is polypropylene, so the unit sits comfortably on acid, alkaline and neutral baths and will not feed corrosion products of its own into the chemistry. As it ships, it is a grey PP cylinder on a bolted lid, a blue motor at the base, gauge and switchgear on the panel, red valve handles at the front: a compact assembly whose condition you can read at a glance from across the aisle.

Technical Specifications

Filtration Performance

• Removal before deposition. Media in the housing traps the fines, carbon dust and anode sludge that would otherwise co-deposit with the metal. Roughness, pitting and the dull patches that survive a brightener addition usually trace back to a particle that settled on the cathode.
• Steady flow, steady thickness. A 60 L/min return keeps the bath turning over, so additive concentration and temperature do not separate into layers between the tank and the filter. Shops running industrial metal plating to a thickness tolerance notice this first on parts with deep recesses and blind holes.
• Fine media where the finish matters. On decorative and appearance-critical work the media grade can follow the finish instead of the dirt load. A finer grade costs more per change and removes the last of the visible defects, which is the right trade only when the cosmetic standard justifies it.
• Less rework for metal plating services. Every particle caught is a part that does not come back for polishing. Where work is judged against a cosmetic standard, the rework column is normally where a filter pays for itself.
• Longer intervals between bath dumps. A cleaner bath builds up breakdown products more slowly, so the expensive event — dumping, treating and remaking a bath — happens less often and takes less production time with it.
• A filter you can watch. The panel gauge shows the pressure climb that means the media is loading, so a change gets scheduled before flow drops far enough to affect the deposit rather than after a batch comes out dull.

PP Build and Safety Devices

Polypropylene decides where this filter can live. A steel body is fine until chloride chemistry or acid mist reaches the welds; a PP housing is chemically inert in acid, alkaline and neutral plating solutions, which is why it holds up on nickel, zinc and copper baths alike. The temperature ceiling is the one figure to check before anything else: a bath that runs hotter than the working limit in the specification table is outside the housing's range, while most decorative, barrel and rack baths sit comfortably inside it.

The motor has its own cover, because acid vapour in the air of a plating room attacks electroplating equipment long before it attacks the bath. Behind that sits the safety device: if the motor overloads or runs single-phase, the switch cuts the power supply instead of letting the pump cook itself dry. On a unit that runs unattended for a whole shift, that is the difference between a tripped switch and a burnt-out motor.

Parts are moulded rather than hand-fabricated, and every wearing component is interchangeable, so a replacement goes straight on without anyone matching a drawing. The lid uses a conjoined bucket design that seals without a gasket fight, and the exhaust valve on top is a patented non-metallic design, so venting the housing does not drop corrosion product into the tank. On a zinc nickel plating line, where the bath chemistry is the expensive part of the operation, that detail matters more than the pump curve.

Filter Media and Add-On Options

• Filter press disc. The workhorse format for a bath carrying a heavy sludge load; the disc stack holds a lot of dirt before the gauge starts to climb.
• Filter pipe pressure disc. A caged disc that holds its shape under pressure, which suits lines run at the higher end of the flow range.
• Star-pleat cartridge. Pleated construction packs a large surface into a compact housing, useful when you want fine retention without changing the footprint beside the tank.
• Lock-cap filter. The cartridge locks into the housing base, so the seal does not depend on lid compression alone.
• Filter paper. The cheapest route to fine retention for a short campaign, typically on decorative work where the bath is already clean but the finish has to be flawless.
• Activated carbon treatment. A carbon stage pulls organic breakdown products out of the bath. Most shops run it as a batch treatment after a bath has taken on brightener residues rather than leaving it on continuously.
• Self-cleaning circulation system. A self-cleaning loop keeps the housing working between manual changes, which matters on a line that runs through the week without a natural stop.
• Flange choice: PVC or PP. Both are supplied as a set for inlet and outlet. The choice normally follows the material of the existing pipework so the joint stays one material end to end.
• One media format: 20" × 2. Every option above sits in the same twin 20-inch format, so the housing remains a single piece of electroplating equipment that covers all of them without a second pump.

Servicing Routine

1. Close the inlet and outlet valve handles to isolate the housing. The tank keeps plating while you work.
2. Open the non-metallic exhaust valve on top and let the pressure out before touching the lid.
3. Release the lid fixings and lift it clear. The bolted lid seats on the conjoined bucket, so it comes apart without wrestling a gasket.
4. Lift out the spent media. Press discs, pressure discs, star-pleat cartridges, lock-cap filters and paper all release the same way.
5. Fit the replacement into the same seat. On an electroless nickel plating bath the media loads faster than on a zinc bath, so follow the gauge rather than the calendar.
6. Reseat the lid, close the exhaust valve and reopen the inlet and outlet.
7. Watch the pressure gauge on restart. A reading that settles back to its usual place confirms the seal is good and the new media is seated.

Running Cost and Bath Economy

Power, media and bath life are the three running costs a filter touches, and which one dominates depends on the line. The motor draws 180 W, small enough to run continuously without adding measurable heat to a 600 L tank, which is useful on a zinc nickel plating bath that already sits close to its temperature ceiling.

Where the money actually goes is media and bath life. A coarse disc on a heavy-sludge prep bath has a lower cost per change; a fine cartridge on a decorative line costs more but removes the last visible defect. On an industrial metal plating line running several alloys, media choice is usually set per tank rather than per shop, because the dirt load differs more between tanks than between weeks.

The third cost is downtime, and it is the one buyers underrate. Because the valve handles isolate the housing, a media change does not require the tank to be drained or the line to stop; it becomes a short job between batches rather than a planned outage. Polypropylene supports that: the body does not corrode the way a steel housing does, so there is no annual body replacement hiding in the budget.

Pulling a bath less often is the largest single saving. Each extra stretch of bath life removes a dump, a treatment charge and a remaking cost, and on a bath where the make-up chemistry is expensive — a zinc nickel plating bath is the obvious case — that saving is easy to see in the month's figures.

Applications

• Automotive and aerospace components. Engine parts, brackets and aircraft fittings plated for corrosion resistance and fatigue life, where a particle trapped in the coating is a rejection rather than a cosmetic issue. Zinc nickel plating lines in these sectors live or die on bath cleanliness.
• Electronics and connector manufacturing. Connectors, lead frames and circuit boards plated with nickel or gold over nickel need a bath free of fines; a conductive layer with an inclusion fails at the assembly stage, not at plating.
• Industrial machinery and tooling. Wear-resistant coatings on shafts, dies and tooling hold their thickness across long runs when the bath is stable, so the deposit does not drift between batches.
• Job shops running mixed work. A shop that runs metal plating services across several customers needs one filter that changes media to match the job, not one dedicated unit per bath.
• Barrel and rack lines. The footprint suits either arrangement, because the unit sits beside the tank rather than over it, and the same plating equipment serves a rack line without modification.

Installation and Commissioning

1. Match the unit to the tank before anything is unbolted from the pallet. The rating in the specification table is the design point, and a materially larger tank needs a different size.
2. Set the frame on a level floor beside the tank, clear of the splash zone and with room at the front to swing the lid open. Unlike most electroplating equipment suppliers' housings, this one arrives assembled, so there is no pump to align or coupling to shim.
3. Connect the inlet and outlet flanges. PVC or PP flanges are supplied as a set; match the material to the existing pipework so the joint stays one material end to end.
4. Fill the housing and check every joint before the bath goes through it. A dry test on water is quicker than finding a weep with a full nickel bath behind it.
5. Open the exhaust valve to let air out of the housing, then close it once water runs steadily. Trapped air shortens media life and makes the gauge read high.
6. Start the pump, set the flow with the outlet valve, and note the gauge reading on a clean set of media. That number is the baseline for every future change.
7. Record the bath temperature before the first production shift and confirm it stays under the working ceiling, which is the figure that decides whether an electroless plating process can use this unit on that tank at all.

Related Process Chemicals

• Fengfan Brightener for SZ-30B Sulfate Zinc Plating — brightener system for sulfate acid zinc lines.
• Fengfan Bright Zinc Alkaline for Rack and Barrel Plating ZN 50 — bright alkaline zinc process for rack and barrel work.
• Fengfan Brightener for Cyanide Free Alkaline Zinc Plating ZN-500 — brightener for cyanide-free alkaline zinc baths.
• Fengfan Phoenix EB 204A-204B Divalent Tin Salt Electrolytic Colouring Additive — electrolytic colouring additive based on divalent tin salt.
• Fengfan Phoenix Seal 149-L Middle Temperature Sealing Agent for Aluminum Anodizing — mid-temperature sealing agent for anodized aluminium.
• Fengfan Phoenix Seal 149-T Medium Temperature Sealing Agent — medium-temperature sealing agent for anodizing lines.
• Fengfan High Deposit Brightness Copper Plating FI-970 Bright Acid Copper Plating Process — bright acid copper process for high deposit brightness.
• Fengfan Wood Stone Concrete Nano-Protective FF-4219 — nano-protective treatment for wood, stone and concrete surfaces.
• Fengfan Nickel Purify P3 — purification treatment for nickel baths.
• Fengfan Environmentally Friendly Chrome Mist Inhibitor FF-116 — mist suppressant for chrome plating baths.

Ordering and Delivery

Chemical Nickel Line Compatibility

• Chemistry is the easy half. Housing, lid, internal pipework and valve bodies are all polypropylene, which stays inert in the acid, alkaline and neutral solutions used for electroless nickel plating. No metal sits anywhere in the circulation loop, so the unit cannot shed iron, chromium or copper into a bath where stray metal ions cause roughness and cut bath life.
• Temperature is the half that decides the answer. The housing has a fixed working ceiling, and a bath that runs above it is outside the unit's range however well the chemistry matches — chemical nickel baths are often run hot. Read the tank with a thermometer at working temperature rather than trusting the controller set point, then compare the reading against the limit in the specification table. A low-temperature alkaline chemical nickel process, the type used on plastics, normally sits well inside the range.
• With no current, the pump sets the uniformity. In an electroless plating process, deposition rate follows bath temperature and chemistry rather than a current density, so a cool or nickel-poor pocket in the tank simply plates thinner. The side-stream return keeps the bulk of the bath moving past the housing and back into the tank, which is what prevents those pockets forming between shifts.
• The bath makes its own dirt. An electroless bath plates without current but not without reaction: fine sludge and phosphite particles build up as it works, and any that settle on the work become pits, rough patches and dull areas. Trapping them in the housing on a side stream is the reason to put a filter on a chemical nickel line at all.
• Keep the pipework plastic end to end. The flange set is supplied in PVC or PP, and matching it to plastic pipework keeps metal nipples, reducers and fittings out of the loop where the bath can attack them — a detail that matters more on a nickel bath than on a zinc one.
• What the unit does not do. It filters a side stream. It does not heat the bath, agitate the work, or correct a bath that is out of range on nickel content or pH. If your line depends on in-tank heating or on continuous carbon treatment at temperature, plan those separately and use this unit for solids removal.
• When it is the wrong unit for the tank. A bath running hotter than the housing's temperature ceiling, a tank far larger than the volume this model is built for, or a process that needs the housing inside the heated tank all fall outside what this plating equipment is built for. Send us the bath volume, the working temperature and the bath chemistry, and we will tell you plainly whether this model suits that tank.

Sustainable and Cost-Effective Solution

Fengfan prioritises eco-friendly manufacturing, and this electroplating equipment minimises chemical waste and energy consumption. Its long service life reduces downtime, offering a cost-effective solution for zinc nickel plating companies and large-scale plating facilities. Exact energy and waste-reduction figures depend on your line configuration, so our team confirms them against your own setup before you commit.

Unmatched Durability and Chemical Resistance

The PP material construction ensures longevity even in aggressive plating baths, outperforming traditional metal filters. That resistance makes it a top choice for aluminum anodizing service providers and other heavy-duty applications. Share the bath chemistry and operating temperature you run, and we will confirm compatibility of the housing and internal components with your process.

Technical Support & Model Matching

Choosing the right match is where most sourcing decisions stall. As a trading supplier, we keep one point of contact from first enquiry to after-sales: tell us what you are making and the conditions you work under, and we shortlist the closest matches from our supplier network, compare specifications and arrange samples before you commit to a bulk order. If something does not behave as expected, we work with the supplying partner on the cause and a practical fix, and stay with the case until it is settled. Email, WeChat or WhatsApp enquiries get a reply within 24 hours.

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