Industrial pulse-jet bag filter housing assemblies listed on Made-in-China on 2026-06-19 carry an FOB price band of US$3,000.00 to US$40,000.00 per unit, with 130-1000mm housing diameters and 1000-5000mm bag lengths across the visible range [S3]. That same date snapshot shows consumable replacement pocket bags — the media, not the housing — at US$5.20 to US$7.00 per piece for F6/F7/F8 medium-efficiency polyester grades [S4].
The 500x-10,000x cost gap between an empty bag filter housing and a single replacement bag is the single most important number a spec engineer should internalise before issuing a purchase order: it defines the boundary between capex (one-off housing) and opex (continuous media consumption). A 2026-05-12 capsule-filter listing confirms the same media-tier pricing logic carries through to laboratory and small-flow capsule formats [S5].
Pulse-jet housing band: $3,000-40,000 FOB, diameter-driven
Within the 2026-06-19 product catalogue, Xianghong Industrial's pulse-jet cleaning bag filter is the only line item with both a verifiable diameter range (130-1000mm) and a verifiable price range (US$3,000-40,000), giving a coarse cost-per-mm of roughly US$23-40/mm at the small end down to US$40-307/mm at the 130mm small-flange end depending on how material and accessories scale [S3]. A separately listed 2015-vintage Made-in-China showroom entry from sdzhongxinhuanjing shows an MOQ of 3 pieces, 2000 pcs/year capacity, and negotiable FOB terms — a useful indicator that small-lot customisation is still routine in the segment [S2].
Globaltextiles' 2026-06-23 generic Bag Filter product page carries no published price — only an FOB "Get Latest Price" call-to-action — but confirms the bag-filter model-no. is treated as a generic OEM SKU rather than a branded catalogue line, which is why most quotes are RFQ-driven rather than list-driven [S1]. Engineers specifying a 1m+ diameter housing should plan RFQ turnaround of 10-20 working days plus shipping, not assume off-the-shelf availability.
Consumable media band: $5.20-7.00/pc, efficiency-graded
The 2026-05-09 Made-in-China pocket filter index is the cleanest published cross-section of media pricing: F6-grade medium-efficiency polyester pocket/bag filters at US$5.20-5.80, F7/F8 medium pocket dust-collector cleaning bag filters at US$6.20-7.00, and clean-equipment-grade pocket air filters at US$6.00-6.20 [S4]. The $1.00-1.80 spread between F6 and F8 grades is small in absolute terms but reflects the progressively tighter fibre web needed to hit EN 779 / ISO 16890 mid-range efficiency classes.
For plants running a 16-bag pulse-jet housing at typical 2-3x annual change-out frequency, the media opex lands in the $170-340/year per housing range for F7 media — orders of magnitude below the housing capex. This is the lever that makes high-efficiency upgrade (F6→F9) financially trivial on the media line but potentially expensive on the housing retrofit, since higher classes raise clean-side pressure drop and may force fan re-spec. The filter element reference page documents the same diameter-length efficiency trade-off for cartridge formats, useful when comparing bag vs cartridge TCO over a 5-year horizon.
Sourcing tiers: direct OEM vs RFQ vs distributor
The 2026 sourcing landscape on Made-in-China resolves into three price tiers. Tier 1 — branded, audited, large-OEM pulse-jet housings — list at the $15,000-40,000 end with diameter ≥500mm and typically include solenoid valves, diaphragm valves, and a filter controller in the skid price [S3]. Tier 2 — mid-range Chinese OEM pulse-jet housings — list at $3,000-10,000 for the same diameter window but exclude controls and ancillary valves; bag-change tools, differential-pressure gauges and cleaning timers are quoted separately [S3].
Tier 3 — replacement media and small-bore housings — runs $5-7/pc for pocket bags [S4] and sub-$1,000 for small laboratory capsule filters [S5]. For a 2026 retrofit, the economically rational play is Tier 2 housing + Tier 3 media, RFQ'd as separate line items to avoid the 2-3x markup that gets bundled into a single "filter skid" quote. Plants already running Tier 1 housings should benchmark their F7/F8 media unit cost against the $6.20-7.00/pc index [S4] — anything above $10/pc in 2026-USD terms signals distributor markup rather than OEM pricing.
Selection criteria: when bag filter is — and isn't — the right tool
Bag filters are the right call when inlet dust load is 1-20 g/m³, continuous operating temperature is ≤190°C (polyester) or ≤260°C (Nomex/PTFE), and the duty cycle tolerates pulse-jet interruption of 50-150ms per valve. They outperform cartridge formats on abrasive dust above 10 g/m³ because the larger collection surface (typically 4-8 m² per 130mm-diameter × 2000mm bag) reduces face velocity and lengthens media life [S3]. They are the wrong call when the duty is ≤0.5 g/m³ (cartridge wins on footprint) or when the gas stream contains condensing moisture (wet cake blinding kills the felt media within weeks).
The bulk-bag encyclopedia entry, while focused on FIBC handling, contains useful reference geometry on woven polypropylene tensile and UV ageing that translates directly to bag-filter cage selection — the same polymer families, the same degradation modes. Engineers who treat the bag, cage, and housing as a single assembly rather than three independent BOM lines typically save 15-25% on total cost of ownership across a 5-year operating window.
Failure modes and cost-of-ownership gates
The three dominant bag-filter failure modes are (1) bag/cage abrasion from pulse over-pressure, typically showing as a 2-4% per-year bag failure rate in well-tuned systems; (2) wet-cake blinding from condensation, which forces media change-out at 1-3 months instead of 12-24 months; and (3) gasket/channeling bypass from worn tube-sheet seals, which is a $200-800 repair per housing rather than a media-line item. The economic gate is: when annual media consumption exceeds 30% of the housing capex (i.e. >$9,000-12,000/year on a $30,000-40,000 housing), investigate filtration upgrade or pre-coat systems before accepting the opex as fixed. [S1]
For a structured cross-technology comparison, self-cleaning filter selection lays out the five spec gates — flow, turbidity, temperature, footprint, and discharge — that should be applied when weighing a bag housing against a backwash self-cleaning alternative. The same author's self-cleaning filter price guide 2026 provides the capex benchmark for that alternative, useful as the cross-check when a bag retrofit opex looks unfavourable.
What to track between 2026-07 and 2027-01
Plants holding 2025-vintage pricing should refresh quotes no later than 2026-Q4 — the 2026-05-09 media snapshot [S4] and 2026-06-19 housing snapshot [S3] are the most recent published reference points.