Quick-Connect Cartridges
U-type (H-300 / 4FC) and I-type (H-104 / 4SI) quick-connect cartridges — including 10"/11" Inline filters and 50/75/100 GPD RO membranes.
Category overview
Quick-connect is the dominant fitting on Russian-market flow filters and reverse osmosis systems. XZH produces two connector formats: U-type (double O-ring, H-300 / 4FC analog) and I-type (single O-ring bayonet, H-104 / 4SI analog, including 10"/11" Inline cartridges and 50/75/100 GPD RO membranes). No water shut-off, no tools — push-click replacement.
U-type cartridges
The U series uses a double O-ring quick-connect mechanism, functionally equivalent to popular H-300 and 4FC interfaces. Designed for under-sink flow systems with no water shut-off needed for replacement. Three sizes: 11" (extended-life, hard water), 8" (compact), 6" (slim). Media options: PP melt-blown, GAC, CTO carbon block, UF hollow-fiber and PP+CTO combined.
U-type product gallery
Click any photo for full specs and a quote request.
U-type · Media options & specs
The U-type housing (6"/8"/11"/13") is available with any of the following media. Specify media + size on your PO.
| Media | Sizes | Key spec | Function |
|---|---|---|---|
| PP | 6"8"11"13" | Filtration 1–5 µm | Captures sediment, rust, biofilm and large organics. |
| GAC | 6"8"11"13" | Indonesian coconut-shell carbon iodine value ≥ 1100 mg/g | Adsorbs dissolved impurities, odor and residual chlorine. |
| CTO | 6"8"11"13" | Sintered coconut-shell carbon block iodine ≥ 1100 mg/g | Removes chlorine, taste, odor; stable flow, no carbon fines. |
| T33 | 6"8"11"13" | Coconut carbon iodine ≥ 1100 mg/g PH ≤ 7.0 | RO post-filter polish — removes residual chlorine, improves taste. |
| UF | 6"8"11"13" | Filtration 0.01–0.2 µm bacteria retention 99.99% | Removes colloids, spores and bacteria. |
| RO | 6"8"11"13" | Filtration 0.0001 µm salt rejection ≥ 95% | Removes bacteria, viruses, heavy metals and dissolved solids. |
* All U-type carbon media uses Indonesian coconut-shell carbon meeting NSF standards. RO membranes available in 50 / 75 / 100 GPD per order.
I-type cartridges
The I series is a single O-ring bayonet cartridge, equivalent to H-104 and 4SI references. More compact connector than U-type — ideal for tight under-sink installations. Sizes 11", 10", 6" — can be combined into full 3-stage systems or slim small-apartment units.
I-type product gallery
Click any photo for full specs and a quote request.
I-type · Media options & specs
The I-type housing (6"/10"/11"/13") is available with any of the following media.
| Media | Sizes | Key spec | Function |
|---|---|---|---|
| PP | 6"10"11"13" | Filtration 1–5 µm | Sediment, rust, biofilm, large organics |
| GAC | 6"10"11"13" | Indonesian coconut-shell carbon iodine ≥ 1100 mg/g | Removes chlorine, taste, odor |
| CTO | 6"10"11"13" | Sintered coconut carbon block iodine ≥ 1100 mg/g | Stable flow, no carbon fines |
| T33 | 6"10"11"13" | Coconut carbon iodine ≥ 1100 mg/g · PH ≤ 7.0 | RO post-filter polish |
| UF | 6"10"11"13" | Filtration 0.01–0.2 µm bacteria retention 99.99% | Colloids, spores, bacteria |
| RO | 6"10"11"13" | Filtration 0.0001 µm salt rejection ≥ 95% | Bacteria, viruses, heavy metals |
* Activated carbon: Indonesian coconut shell, NSF-listed. RO membranes available in 50 / 75 / 100 GPD per order.
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