Filter housings are metal or plastic pressure vessels that hold filter cartridges or bags — the indispensable hardware foundation of any filtration system. JIUNYUAN offers two product lines: PFA Fool-Proof Lock Housings and Multi-Bag Housings — both available in custom designs to match process pressure, flow rate, material compatibility and connection specifications.
PFA Fool-Proof Lock housings use all-fluoropolymer construction with a unique locking mechanism that prevents mis-installation and contamination during change-out — making them the standard for semiconductor high-purity chemical (HF, HCl, H₂SO₄, NH₄OH) point-of-use filtration. Multi-Bag housings hold 4–24 filter bags in a single vessel, dramatically increasing throughput and reducing unit filtration cost; vessels are SS304 / SS316L with EPDM, Viton, PFA or Halar liners selected by service fluid.
Typical applications: semiconductor wet-process chemical distribution POU filtration, pharmaceutical WFI / purified water filtration, high-flow chemical pre-filtration, plating bath circulation, food & beverage pre-filtration, oilfield produced-water filtration, and power plant cooling water filtration.
Frequently Asked Questions
Why are PFA Fool-Proof Lock housings more expensive?
How many bags fit in a multi-bag housing? Maximum flow rate?
How to choose between SS304 and SS316L vessel material?
Technical Articles in This Category
Understand the principles and how to read the specs before you choose.
Why All Teflon Filter Housings Are Essential in Strong Acid and Alkali Environments: A Materials Science Analysis
Starting from the 485 kJ/mol C-F bond energy, this article explains why PTFE and PFA resist pH 0–14 across all common process chemicals. It dissects the failure mechanisms of 316L stainless steel (passivation collapse, pitting corrosion), PP (swelling in HF), and PVDF (dehydrofluorination in hot alkali), then defines the strict All Teflon specification — housing body, lining, O-ring seals, and fasteners all in fluoropolymer. Covers semiconductor wet benches, pharmaceutical cytotoxic API synthesis, and lithium battery electrolyte filtration, with a practical procurement checklist.
All Teflon Filter Housing Installation, Leak Testing, and Maintenance SOP
A complete installation-to-maintenance SOP for All Teflon filter housings, covering uncrating cleanliness inspection, correct PTFE-encapsulated FKM O-ring installation (15–25% compression), three-stage cross-pattern bolt torquing (typical 25–50 N·m for 4-inch housings), nitrogen pressure leak testing at 1.1 times operating pressure for 10 minutes, cold flow inspection criteria, and safe shutdown and restart procedures for strong acid and alkali service.
Filter O-ring Material Selection: FFKM, EPDM, Viton Compared
One failed O-ring negates the whole cartridge. Compare NBR, EPDM, Viton (FKM), Silicone, FFKM across temperature, chemical compatibility, certifications, and 100× cost spread.
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Custom sizes, materials or validation protocols — we can build the solution around your process.
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