Turnkey Fume Extraction Systems, Hood to Stack
Buying a scrubber here, a fan there and duct from a third shop leaves you holding the performance risk. JHF engineers the whole airpath as one system — capture hoods shaped to your tanks, a balanced PP duct network, correctly sized scrubber or adsorber, matched fan, stack and control panel — fabricated in one factory and covered by one efficiency guarantee.
You send the floor plan and process list; we send back a system drawing, capture velocities, equipment schedule and a single price.
- Capture design first: slot, push-pull, canopy or enclosure — per tank and per code
- Duct network balanced by calculation; dampers where they belong
- Scrubber / carbon / VOC train selected for your chemistry
- Everything prefabricated, labeled and container-packed for site bolting
- Remote or on-site commissioning with measured airflow report
What a JHF System Package Includes
| Engineering | Site data review, capture velocity design, duct sizing & balancing calc, equipment sizing, GA and isometric drawings, English O&M manual |
| Capture | Slot hoods and lips for open tanks, push-pull for wide baths, canopies, enclosures and lateral rails — in PP, with covers where heat loss matters |
| Transport | PP duct DN110–DN2000 with dampers, drains, inspection ports; supports and hangers schedule |
| Treatment | Packed-bed scrubber, carbon adsorber or VOC train — chosen for the chemistry, with dosing and instrumentation |
| Air movement | PP/FRP fan at the calculated duty point, VFD option, silencer where needed |
| Discharge | Stack sections with sampling ports, rain cap, guying or self-support design |
| Controls | Panel with fan/pump interlocks, pH dosing control, differential-pressure monitoring; English labeling |
| Delivery | Prefabricated, piece-labeled, nested container packing, loading plan and full export documents |
| Commissioning | Video-guided or engineer-on-site start-up; airflow & capture verification report against design |
Single-Source Beats Assembled-From-Parts
- One guarantee, no finger-pointing. If capture or stack values miss, it is our problem by contract — not a debate between three vendors.
- Balanced by design. The classic failure — near tanks roaring, far tanks dead — is a duct calculation problem. We size branches and place dampers before fabrication, then verify on commissioning.
- Everything fits. Flanges, voltages, control logic and even bolt bags are coordinated because one drawing office issued them.
- Site work minimized. Prefabrication turns weeks of on-site welding into days of bolting — critical when your line's downtime is the real cost.
Typical applications: electroplating and anodizing shops, pickling lines, PCB wet processes, laboratory buildings, battery plants and wastewater odor systems — see industries and project profiles.
System Package Questions
What information do you need to start?
A floor plan (DWG, PDF or even a dimensioned sketch), the tank/process list with chemistry and temperatures, and photos of the workshop. That is enough for a first system drawing and budget price.
Can you work alongside my local contractor?
Gladly — we deliver the engineered kit and supervise; your contractor erects supports, bolts duct and wires the panel. That split usually gives the lowest total installed cost overseas.
Do you provide a performance guarantee?
Yes: capture velocities at the hoods and outlet concentration at the stack, stated in the contract with the measurement method. The commissioning report documents both.
How long does a typical project take?
Engineering and approval 1–2 weeks, fabrication 3–6 weeks depending on scope, shipping per your route, site assembly typically 1–2 weeks with commissioning at the end.
Floor Plan In, System Proposal Out
Within 2–3 working days of receiving your plan and process list, you get the system drawing, equipment schedule and budget price. Firm pricing follows drawing approval.
WhatsApp +86 186 1558 6932 · sales@jhf2017.com